Log in

Relevant bibliographies by topics / Total organic matter component / Journal articles

To see the other types of publications on this topic, follow the link: Total organic matter component.

Journal articles on the topic 'Total organic matter component'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Total organic matter component.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Fu, Jian, Xuesong Li, Yonghe Sun, et al. "A New Evaluation Method of Total Organic Carbon for Shale Source Rock Based on the Effective Medium Conductivity Theory." Geofluids 2021 (October 27, 2021): 1–12. http://dx.doi.org/10.1155/2021/9030311.

Full text

Abstract:

In the evaluation of source rocks, the total organic carbon (TOC) is an important indicator to evaluate the hydrocarbon generation potential of source rocks. At present, the commonly used methods for assessing TOC include △ log R and neural network method. However, practice shows that these methods have limitations in the application of unconventional intervals of sand-shale interbeds, and they cannot sufficiently reflect the variation of TOC in the vertical direction. Therefore, a total organic carbon (TOC) evaluation model suitable for shale and tight sandstone was established based on the e

APA, Harvard, Vancouver, ISO, and other styles

2

Dubnick, Ashley, Joel Barker, Martin Sharp, et al. "Characterization of dissolved organic matter (DOM) from glacial environments using total fluorescence spectroscopy and parallel factor analysis." Annals of Glaciology 51, no. 56 (2010): 111–22. http://dx.doi.org/10.3189/172756411795931912.

Full text

Abstract:

AbstractAquatic dissolved organic matter (DOM) is a major reservoir of reduced organic carbon and has a significant influence on heterotrophic biological productivity and water quality in marine and freshwater environments. Although the forms and transformations of DOM in temperate aquatic and soil environments have been studied extensively, this is not the case for glacial environments. In this study, fluorescent excitation–emission matrices (EEMs), parallel factor analysis (PARAFAC) and cluster analysis were used to characterize the fluorescing components of DOM in ice and water samples from

APA, Harvard, Vancouver, ISO, and other styles

3

Arrahmah, Syifa, Lilik Masluka, and Denny Nugroho. "Analisis Bahan Organik dan Keterkaitannya terhadap Parameter Lingkungan Di Muara Sungai Banger, Pekalongan." Buletin Oseanografi Marina 14, no. 2 (2025): 181–89. https://doi.org/10.14710/buloma.v14i2.54195.

Full text

Abstract:

Perairan Sungai Banger memiliki beragam kegiatan antropogenik seperti industri batik, perikanan, dan pertanian. Hal ini dapat memberikan kontribusi terhadap masuknya bahan organik. Bahan organik yang terdapat dalam perairan dapat memberikan gambaran tingkat pencemaran. Bahan organik di perairan dapat diprediksi melalui pengukuran parameter seperti BOD5 (Biological Oxygen Demand), COD (Chemical Oxygen Demand) dan kandungan karbon organik total (KOT). Penelitian ini bertujuan untuk mengetahui perbedaan nilai bahan organik di perairan melalui pengukuran parameter karbon organik total (KOT), param

APA, Harvard, Vancouver, ISO, and other styles

4

Gao, Shi-Jie, Chen Zhao, Zong-Hai Shi, Jun Zhong, Jian-Guo Liu, and Jun-Qing Li. "Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing." Journal of Analytical Methods in Chemistry 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1480857.

Full text

Abstract:

In this study, soil samples collected from different plain afforestation time (1 year, 4 years, 10 years, 15 years, and 20 years) in Miyun were characterized, including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available K (K+), microbial biomass carbon (MBC), and dissolved organic carbon (DOC). The DOM in the soil samples with different afforestation time was further characterized via DOC, UV-Visible spectroscopy, excitation-emission matrix (EEM) fluorescence spectroscopy, and1H NMR spectroscopy. The results suggested that the texture of soil sample was sandy. Th

APA, Harvard, Vancouver, ISO, and other styles

5

Golian, Marcel, Lucia Hlavačková, Adriána Maťová, et al. "The influence of chosen organic fertilizers on qualitative parameters of three Daucus carota L. varieties." Potravinarstvo Slovak Journal of Food Sciences 14 (December 16, 2020): 1183–90. http://dx.doi.org/10.5219/1423.

Full text

Abstract:

In rational nutrition, vegetables play an important role due to their high biological and low energy value. The most widespread vegetables in our country belong to root vegetables. They are grown mainly for bulbs, corms, rhizomes, fleshy roots, and hypocotyl tubers. Root vegetables can be eaten raw or cooked. Carrot (Daucus carota L.) is a basic representative of root vegetables. For the most valuable components counts beta-carotene – the major component of total carotenoids. This paper evaluates changes in total carotenoids, refractometric dry matter, and gravimetric dry matter in three varie

APA, Harvard, Vancouver, ISO, and other styles

6

Xing, Xiang, Deliang Fu, Zixiang Wang, Yang Tian, and Lina Sun. "Influence of Organic-Inorganic Composition on the Adsorption of Niutitang Formation Shale in Huijunba Syncline." Geofluids 2022 (July 16, 2022): 1–14. http://dx.doi.org/10.1155/2022/3292399.

Full text

Abstract:

To study the influence of different organic-inorganic composition on the adsorption in shale, taking the Niutitang Formation shale in the Huijunba syncline in southern Hanzhong as the research object, based on acid treatment to extract kerogen and wet chemicals. Extracting mineral components by oxidation method, a series of isothermal adsorption experiments were carried out on the original rock, kerogen, and mineral components of the samples. Through the three-dimensional Langmuir model fitting and adsorption thermodynamic calculation method, the adsorption thermodynamic parameters such as the

APA, Harvard, Vancouver, ISO, and other styles

7

Büyükkılıç Yanardağ, Asuman. "Soil chemistry in apricot cultivation: evaluation of C and N dynamics by PCA and correlation analysis." International Journal of Agriculture Environment and Food Sciences 9, no. 2 (2025): 360–73. https://doi.org/10.31015/2025.2.10.

Full text

Abstract:

This study uses statistical methods to analyze soil carbon (C) and nitrogen (N) dynamics in four different apricot growing regions (Battalgazi, Akçadağ, Doğanşehir and Hekimhan) in Malatya. Correlation analysis, hierarchical clustering (HCA) and Principal Component Analysis (PCA) were applied to examine the relationships between soil organic matter (OM), soluble carbon (Soluble C), biomass nitrogen (Biomass N), total nitrogen (N) and other soil chemical parameters. According to the results obtained, a strong positive correlation (r = 0.67) was found between organic matter (OM) and total nitrog

APA, Harvard, Vancouver, ISO, and other styles

8

Gou, Xiying, Panyue Zhang, Yonghui Song, Feng Qian, Huibing Yu, and Guangming Zeng. "Novel insights into the coagulation process for pharmaceutical wastewater treatment with fluorescence EEMs-PARAFAC." Water Science and Technology 76, no. 12 (2017): 3246–57. http://dx.doi.org/10.2166/wst.2017.425.

Full text

Abstract:

Abstract In this study, coagulation process was applied to treat the effluent of pharmaceutical wastewater using polymeric ferric sulfate as a coagulant. Three-dimensional excitation-emission matrix fluorescence spectroscopy coupled with parallel factor analysis (EEMs-PARAFAC) was applied to investigate the fluorescent characteristics of dissolved organic matter (DOM) from pharmaceutical wastewater and the reduction of contaminant and fluorescent variations in the coagulation process. It shows that coagulation was effective to remove contaminants in the effluent of pharmaceutical wastewater, a

APA, Harvard, Vancouver, ISO, and other styles

9

Shahbuddin, Dahlia, Ansaruddin Othman, and Ahmad Bukhary Ahmad Khair. "Importance of High Crude Fibre Insect Frass for Effective Alleviation of Ammonium (NH4+) Toxicity and Optimal Growth of the Short-Term Vegetable, Amaranthus tricolor." Sains Malaysiana 52, no. 3 (2023): 771–82. http://dx.doi.org/10.17576/jsm-2023-5203-07.

Full text

Abstract:

This study focused on the efficacy of the fecal matter component from insect-derived frass containing high total crude fibre (TCF) for the effective alleviation of ammonium (NH4+) toxicity in short-term vegetables. Two types of insect-derived frass, bred from different feeding substrates, the black soldier fly (BSF) larvae, Hermetia illucens, known as the BSF frass (BSFF), and the common house cricket (CHC), Acheta domesticus, of both adults and nymphal instars, known as CHC frass (CHCF). The short-term vegetable, Amaranthus tricolor, was chosen as the test crop. A total of 200 A. tricolor veg

APA, Harvard, Vancouver, ISO, and other styles

10

Kolář, L., S. Kužel, J. Peterka, P. Štindl, and V. Plát. "Agrochemical value of organic matter of fermenter wastes in biogas production." Plant, Soil and Environment 54, No. 8 (2008): 321–28. http://dx.doi.org/10.17221/412-pse.

Full text

Abstract:

We performed 28-day mesophilic fermentation of a mixture of pig slurry and primary (raw) sludge from the sedimentation stage of a wastewater treatment plant at a 1:1 ratio. The components and the original and fermented mixture of slurry and sludge were subjected to acid hydrolysis. Dry matter of the solid phase of both components and both mixtures was incubated with sandy-loamy Cambisol at a weight ratio 3:1 at 25°C for 20 weeks; in 14-day intervals lipids, crude protein, hemicelluloses, cellulose, lignin, total nitrogen and hot-water-insoluble solids were determined. Changes in ion-exchange a

APA, Harvard, Vancouver, ISO, and other styles

11

Bayne, B. L., J. I. P. Iglesias, A. J. S. Hawkins, E. Navarro, M. Heral, and J. M. Deslous-Paoli. "Feeding behaviour of the mussel, Mytilus edulis: responses to variations in quantity and organic content of the seston." Journal of the Marine Biological Association of the United Kingdom 73, no. 4 (1993): 813–29. http://dx.doi.org/10.1017/s0025315400034743.

Full text

Abstract:

Mussels were fed four concentrations of seston (between 0·99 and 10·3 mg total seston I−1), comprising three levels of organic content (71·9, 63·6 and 40·8%), made up from natural silt and two species of cultured phytoplankton. Two of the seston concentrations were below, and two above, the threshold at which pseudofaeces were produced. Measurements of physiological traits (filtration rates, pseudofaeces production, selection efficiency, absorption efficiency, absorption rates and rates of oxygen consumption) were made after 2 days and, for two of the seston concentrations, also after 12 days.

APA, Harvard, Vancouver, ISO, and other styles

12

Sarraj, Razawa H. R. "Source Rock Evaluation and Hydrocarbon Generation Potential of the Cretaceous (Dokan and Gulneri) Formations in Bai Hassan-13 Well Section, Kurdistan, North of Iraq." IRAQI BULLETIN OF GEOLOGY AND MINING 20, no. 2 (2024): 23–37. http://dx.doi.org/10.59150/ibgm2002a02.

Full text

Abstract:

Eleven cutting rock samples from both Dokan and Gulneri formations (Cretaceous) in one subsurface section of Bai Hassan-13 (BH-13) well in northern Iraq were studied by using two techniques for hydrocarbon generation potentiality. The geochemical technique included Rock-Eval Pyrolysis analysis, The optical technique was achieved by studying palynological slides. The rock-Eval pyrolysis results showed that Dokan Formation has total organic carbon (TOC) wt.% ranging between 1.16 % and 2.3 % (good to very good), Gulneri Formation has a high TOC of 1.34 % and 4.64 % (good to excellent) quantity of

APA, Harvard, Vancouver, ISO, and other styles

13

Hidayah, Siti Nur, Niniek Widyorini, and Pujiono Wahyu Purnomo. "ANALISIS KESUBURAN PERAIRAN WADUK JATIBARANG BERDASARKAN DISTRIBUSI DAN KELIMPAHAN BAKTERI HETEROTROFIK." Management of Aquatic Resources Journal (MAQUARES) 5, no. 4 (2017): 443–52. http://dx.doi.org/10.14710/marj.v5i4.14655.

Full text

Abstract:

ABSTRAKWaduk Jatibarang terletak di Kecamatan Gunungpati, Kota Semarang. Waduk tersebut digunakan sebagai pengendali banjir, tempat pariwisata, kegiatan menangkap ikan, dan rencana akan dibuat sebagai sumber air bersih melalui PDAM. Pemanfaatan waduk untuk berbagai keperluan kemungkinan dapat menurunkan kualitas air dari waduk tersebut. Penelitian ini mengkaji kesuburan perairan Waduk Jatibarang berdasarkan distribusi dan kelimpahan bakteri heterotrofik. Bakteri heterotrofik berperan penting dalam sistem perairan sebagai perombak dan meremineralisasi bahan-bahan organik menjadi komponen anorga

APA, Harvard, Vancouver, ISO, and other styles

14

Thieme, Lisa, Daniel Graeber, Martin Kaupenjohann, and Jan Siemens. "Fast-freezing with liquid nitrogen preserves bulk dissolved organic matter concentrations, but not its composition." Biogeosciences 13, no. 16 (2016): 4697–705. http://dx.doi.org/10.5194/bg-13-4697-2016.

Full text

Abstract:

Abstract. Freezing can affect concentrations and spectroscopic properties of dissolved organic matter (DOM) in water samples. Nevertheless, water samples are regularly frozen for sample preservation. In this study we tested the effect of different freezing methods (standard freezing at −18 °C and fast-freezing with liquid nitrogen) on DOM concentrations measured as organic carbon (DOC) concentrations and on spectroscopic properties of DOM from different terrestrial ecosystems (forest and grassland). Fresh and differently frozen throughfall, stemflow, litter leachate and soil solution samples w

APA, Harvard, Vancouver, ISO, and other styles

15

P Kalaiselvi, RM Devi, E Parameswari, SP Sebastian, V Dayamani, and T Ilakiya. "The ocean carbon pool: a vital component of the global carbon cycle." Journal of Agriculture and Ecology 17 (November 10, 2023): 80–84. http://dx.doi.org/10.58628/jae-2317-314.

Full text

Abstract:

The global carbon cycle is an integral part of the Earth System. Of the land, atmosphere, and ocean components of the global carbon cycle that exchange carbon on the timescales of decades to centuries, the ocean contains more than 90% of carbon. The ocean carbon pool represents a critical component of the Earth's carbon cycle, playing a pivotal role in regulating atmospheric carbon dioxide (CO2) levels and influencing climate dynamics. The exponential increase of total anthropogenic CO2 emissions in the industrial era implies the ocean's uptake has increased exponentially, reaching 2.5 ± 0.6 P

APA, Harvard, Vancouver, ISO, and other styles

16

Meng, Yingjie, Chengwu Xu, Tingting Li, Tianyong Liu, Lu Tang, and Jinyou Zhang. "Prediction of Total Organic Carbon Content in Shale Based on PCA-PSO-XGBoost." Applied Sciences 15, no. 7 (2025): 3447. https://doi.org/10.3390/app15073447.

Full text

Abstract:

Total organic carbon (TOC) content is an important parameter for evaluating the abundance of organic matter in, and the hydrocarbon production capacity, of shale. Currently, no prediction method is applicable to all geological conditions, so exploring an efficient and accurate prediction method suitable for the study area is of great significance. In this study, for the shale of the Qingshankou Formation of the Gulong Sag in the Songliao Basin, TOC content prediction models using various machine learning algorithms are established and compared based on measured data, principal component analys

APA, Harvard, Vancouver, ISO, and other styles

17

Cho, Youngbeom, June-shu Ahn, Chae ho kim, and Dong chul Shin. "Multivariate Statistical Analysis of Dyeing Wastewater Organic Matter Indicators." Journal of Korean Society of Environmental Engineers 46, no. 2 (2024): 57–63. http://dx.doi.org/10.4491/ksee.2024.46.2.57.

Full text

Abstract:

Objectives:Since 2016, TOC (Total Organic Carbon) has replaced COD (Chemical Oxygen Demand) as an organic indicator for effluent wastewater quality standards. However, the distribution of organic substances by process in wastewater treatment facilities is not properly identified, making it difficult to secure stable treated wastewater quality. Therefore, in this study, we identified the correlation between TOC and existing organic matter indicators in raw wastewater, primary treated, secondary treated, and effluent wastewater for dyeing wastewater.Methods:Samples for each process were collecte

APA, Harvard, Vancouver, ISO, and other styles

18

Eckmeier, E., C. Mavris, R. Krebs, B. Pichler, and M. Egli. "Black carbon contributes to organic matter in young soils in the Morteratsch proglacial area (Switzerland)." Biogeosciences Discussions 9, no. 10 (2012): 13899–923. http://dx.doi.org/10.5194/bgd-9-13899-2012.

Full text

Abstract:

Abstract. Most glacier forefields of the European Alps are progressively exposed since the glaciers reached their maximum expansion in the 1850s. Global warming and climate changes additionally promote the exposure of sediments in previously glaciated areas. In these proglacial areas, initial soils have started to develop so that they may offer a continuous chronosequence from 0 to 150 yr-old soils. The build-up of organic matter is an important factor of soil formation, and not only autochthonous but also distant sources might contribute to its accumulation in young soils and surfaces of glac

APA, Harvard, Vancouver, ISO, and other styles

19

Roe, J., A. Baker, and J. Bridgeman. "Relating organic matter character to trihalomethanes formation potential: a data mining approach." Water Supply 8, no. 6 (2008): 717–23. http://dx.doi.org/10.2166/ws.2008.150.

Full text

Abstract:

The removal of natural organic matter (NOM) during water treatment is becoming more important for all water utilities in the UK, as a result of tightened regulatory standards for trihalomethanes (THM), disinfection by-products (DBP) formed when residual organics react with chlorine. This paper considers the spatial and temporal variability of raw and clarified water arising from 16 surface water treatment works in the Midlands region of the UK. A wide range of investigation techniques are applied in order to develop effective strategies for the treatment of NOM-rich water. For the first time,

APA, Harvard, Vancouver, ISO, and other styles

20

Amin, Muhammad, Andi Annisa Tenri Ramadhani, Rasdiana Zakaria, et al. "Total Suspended Particulate Matter (TSP)-Bound Carbonaceous Components in a Roadside Area in Eastern Indonesia." Urban Science 8, no. 2 (2024): 37. http://dx.doi.org/10.3390/urbansci8020037.

Full text

Abstract:

To evaluate carbonaceous components in the ambient air in the eastern region of Indonesia, 35 Total Suspended Particulate Matter (TSP) samples were collected on four characteristic roadsides on Sultan Alauddin Street, in Makassar City, using a high-volume air sampler. The average TSP concentration was 279.7 μg/m3, which exceeded both the National Ambient Air Quality Standard (NAAQS) of Indonesia and the World Health Organization (WHO) standards. The highest concentration reached 838.6 μg/m3 in the GR (gravel) site, which had the highest number of vehicles and was near a U-turn. TSP concentrati

APA, Harvard, Vancouver, ISO, and other styles

21

Yaseen, Muhammad, Wenxing Long, Farhan Khalid, Saraj Bahadur, and Hamza Armghan Noushahi. "Shifts in Community Vegetative Organs and Their Dissimilar Trade-Off Patterns in a Tropical Coastal Secondary Forest, Hainan Island, Southern China." Diversity 14, no. 10 (2022): 823. http://dx.doi.org/10.3390/d14100823.

Full text

Abstract:

The ecology of functional features highlights the importance of the leaf economic spectrum (LES) in understanding plant trade-offs between conservative and commercial resource use. However, it is still unclear whether changes in the plant attributes of various vegetative organs can be altered and whether the plant economic spectrum (PES) is categorized by multiple vegetative organs. We investigated a total of 12 functional features of 174 woody tree species, with leaf and stem attributes, on Hainan Island. We used principal component analysis (PCA) to analyze the changes in attributes and conn

APA, Harvard, Vancouver, ISO, and other styles

22

Lin, Chun-Ju, and Lih-Ann Li. "Estrogenicity of Major Organic Chemicals in Cigarette Sidestream Smoke Particulate Matter." Atmosphere 14, no. 4 (2023): 647. http://dx.doi.org/10.3390/atmos14040647.

Full text

Abstract:

We previously found that cigarette sidestream smoke particulate matter (CSSP) could activate estrogen receptor ERα to generate estrogen-like tumor-promoting effects. This study sought to identify the compounds responsible for CSSP estrogenicity. We first identified the component compounds using a combination of GC-MS and mass spectral matching. Based on computational estrogenicity prediction, nine potential estrogenic compounds were selected for second GC-MS identification and quantification. Their estrogenic activities at levels detected in the CSSP were verified using an estrogen-responsive

APA, Harvard, Vancouver, ISO, and other styles

23

Nna, P. J., K. J. Orie, and N. A. S. Kalu. "Source Apportionment and Health Risk of Some Organic Contaminants in Water and Suspended Particulate Matter from Imo River, Nigeria." Journal of Applied Sciences and Environmental Management 28, no. 2 (2024): 291–303. http://dx.doi.org/10.4314/jasem.v28i2.1.

Full text

Abstract:

The objective of this study was to provide the source identification and assessment of potential health associated with some organic contaminant detected in water and suspended particle matter (SPM) from the Imo River, Nigeria using gas chromatography with a flame ionization detector (GC/FID) after 1:1 ratio solvent mixture (n-hexane and dichloromethane) extraction. The findings on SPM revealed the values; pH (5.42±0.097-5.567±0.057), conductivity (74.58±5.390-87.6±0.9 uS/cm), and total organic carbon (TOC) (3.626±0.366-6.143±0.176), and surface water; pH (6.077±0.049-6.46±0.52), conductivity

APA, Harvard, Vancouver, ISO, and other styles

24

lhaj, Zakaria Ait, Abdelmajid Zouahri, Oualid Abboussi, et al. "INFLUENCES OF THE SOIL PHYSICO-CHEMICAL CHARACTERISTICS ON THE MINERAL COMPOSITION OF THE MOROCCAN STRAWBERRY TREE (Arbutus unedo L)." Journal of Experimental Biology and Agricultural Sciences 9, no. 3 (2021): 294–304. http://dx.doi.org/10.18006/2021.9(3).294.304.

Full text

Abstract:

Leaf mineral composition reflects the complex interaction between soil, climate, and plant genetic and epigenetic background in terms of organic and inorganic composition. The present study aimed to evaluate the effect of seven soil compositions on the mineral contents of Strawberry leaves (Arbutus unedo) under Moroccan conditions. The obtained results demonstrated a significant positive correlation between the soil nitrogen, phosphorus, and potassium levels and their levels in the Strawberry plant leaves. Also, a positive relation was reported between the soil organic matter and the level of

APA, Harvard, Vancouver, ISO, and other styles

25

Lima, Neuriane Silva, Darlan Ferreira da Silva, Wallace Ribeiro Nunes Neto, Delmo Matos da Silva, Leila Cristina Almeida de Sousa, and Maria Raimunda Chagas Silva. "Evaluation of the quality of superficial sediment using principal components analysis of the physical–chemical attributes of the Mearim River – Brazil." Ciência e Natura 42 (December 31, 2020): e5. http://dx.doi.org/10.5902/2179460x41267.

Full text

Abstract:

The Mearim River is one of the main rivers of Maranhão, which, over the years, has been affected from pollution caused by human activities such as deforestation, disposal of domestic effluents, and agricultural activities, among others. The objective of this research was to evaluate the environmental quality of the Mearim River through the study of the sediment in different periods. In order to investigate this question, four sampling points (P1- Balneário, P2-Cais, P3-Trizidela, and P4-Matadouro) were submitted to particle size analysis (clay, silt, and fine sand) and physico-chemical analyse

APA, Harvard, Vancouver, ISO, and other styles

26

Wang, Xiaoli, Qingjun Cao, Wenying Yang, and Xiancan Zhu. "Spatial Changes in Glomalin-Related Soil Protein and Their Correlation with Soil Properties in the Black Soil Region of Northeast China." Agronomy 12, no. 9 (2022): 2165. http://dx.doi.org/10.3390/agronomy12092165.

Full text

Abstract:

Glomalin-related soil protein (GRSP), soil nutrients, and soil enzyme activities are closely related to soil fertility and land productivity, which play an important role in indicating soil quality. Little is known about the spatial variation in GRSP and its relationship with edaphic factors. Here, the spatial distribution of GRSP, soil chemical properties, and the soil enzyme activities of 0–20 cm depth farmland soil in the black soil region of northeast China were investigated, and the relationships among edaphic factors were analyzed collected from 41 sampling sites. The results indicate th

APA, Harvard, Vancouver, ISO, and other styles

27

Cassini, S. T., M. C. E. Andrade, T. A. Abreu, R. Keller, and R. F. Gonçalves. "Alkaline and acid hydrolytic processes in aerobic and anaerobic sludges: effect on total EPS and fractions." Water Science and Technology 53, no. 8 (2006): 51–58. http://dx.doi.org/10.2166/wst.2006.235.

Full text

Abstract:

Sludge samples from an upflow anaerobic sludge blanket (UASB) reactor and four submerged aerated biofilters (BFs) of a wastewater treatment plant (1,000 inhab.) were processed at bench scale by alkaline and acid hydrolysis with the objective to evaluate the organic matter solubilization, volatile solids (VS) destruction and the effect of hydrolytic processes on the extracellular polymeric substances (EPS) fraction of the sludge samples. The results showed that alkaline hydrolysis of sludge samples treatment with 1.0% total solids (TS) using NaOH 20 meq L−1 was more efficient on organic matter

APA, Harvard, Vancouver, ISO, and other styles

28

Chu, Chenjing, Mengying Shao, and Xiao Wang. "Dissolved biochar promoted photodegradation of tetracycline in aqueous environment." E3S Web of Conferences 251 (2021): 02055. http://dx.doi.org/10.1051/e3sconf/202125102055.

Full text

Abstract:

As one of the frequently detected antibiotics in aqueous environment, the environmental behaviour of tetracycline has received increasing attention. Dissolved biochar (DBC) is an essential component of dissolved organic matter (DOM) in water enviroment. However, the effect of DBC on the photodegradation of tetracycline was unclear. This study investigated the impact of DBC on the photodegradation of tetracycline in aqueous solution under light illumination. The main components of DBC were humic acid-like and fulvic acid-like, accounting for 78.2% of the total components. The DBC surface had mo

APA, Harvard, Vancouver, ISO, and other styles

29

Sinha, Priyanka, Gazala Rizvi, and Devendra Singh. "CORRELATION BETWEEN PHYSICOCHEMICAL CHARACTERS AND RHIZOSPHERIC MYCOFLORA FROM SOIL OF PIGEON PEA FIELD IN JALAUN DISTRICT." International Journal of Engineering Applied Sciences and Technology 6, no. 9 (2022): 111–18. http://dx.doi.org/10.33564/ijeast.2022.v06i09.014.

Full text

Abstract:

Soil is an excellent culture media for the growth and development of various microorganisms. It is a mixture of five component i.e., organic matter, mineral matter, soil air, soil water and soil microorganism. Soil is not an inert static material but a medium pulsating with life. The amount proposition of different components in soil varies with localities in climate. The study was undertaken to investigate the relationship among physicochemical characteristic of soil and their impact on microfloral diversity and wilt disease incidence of pigeon pea, from ten different villages belonging to Ja

APA, Harvard, Vancouver, ISO, and other styles

30

Ohorella, Syarif, and Mira Herawati Soekamto. "Analysis of Biomass Content of Bottom Plants and Biomass Litter on Agroforestry Land with Slash and Buring System." Tropical Small Island Agriculture Management 1, no. 2 (2021): 99–106. http://dx.doi.org/10.30598/tsiam.2021.1.2.99.

Full text

Abstract:

In this land use, humans act as ecosystem regulators, namely by getting rid of components that he considers useless or by developing features that are expected to support their land use (Mather, 1986; Gandasasmita, 2018), which is a residue and others that can increase soil fertility levels such as soil organic matter, biomass, and necromass. This study aims to measure the biomass content of lower plants and litter biomass on agroforestry land with a slash and burn system. Before and after the combustion process, the ten soil samples showed more C-organic content before the combustion treatmen

APA, Harvard, Vancouver, ISO, and other styles

31

Baran, Agnieszka, Agnieszka Klimkowicz-Pawlas, Aleksandra Ukalska-Jaruga, et al. "Distribution of polycyclic aromatic hydrocarbons (PAHs) in the bottom sediments of a dam reservoir, their interaction with organic matter and risk to benthic fauna." Journal of Soils and Sediments 21, no. 6 (2021): 2418–31. http://dx.doi.org/10.1007/s11368-021-02968-1.

Full text

Abstract:

Abstract Purpose The aims of the study were to investigate the interaction between fractions of organic matter and polycyclic aromatic hydrocarbons (PAHs) in bottom sediments and to use mussels as passive biomonitors and consensus-based sediment quality guidelines for ecological risk assessment in sediments. Methods Bottom sediment samples were taken from 46 points located in the Rożnów reservoir (Poland). The sediment organic matter (SOM) characteristics included total carbon (TC), total organic carbon (TOC), humic acid carbon (Cha), fulvic acid carbon (Cfa), non-hydrolysing carbon (Cnh), and

APA, Harvard, Vancouver, ISO, and other styles

32

Astrakhantseva, Olga Yu, and Oleg Yu Palkin. "Average annual background quantity of chemical elements and organic matter in the streams of the "River" environment flowing into Lake Baikal reservoirs." XXI century. Technosphere Safety 5, no. 4 (2020): 433–47. http://dx.doi.org/10.21285/2500-1582-2020-4-433-447.

Full text

Abstract:

The aim of the article is to assess the average long-term background hydrochemical input of chemical elements and organic matter from the flows of the natural component of the environment "Rivers" flowing into the South, Selenginsky, Middle and North reservoirs of Lake. Baikal. The results of calculation of the average annual amount (g/year) of chemical elements and organic matter (Na+, K+, Ca2+, Mg2+, Al, Si, Mn2+, Feобщ , SO42-, HCO3-, Cl-, NO3-, PO43-, Cr, Cu, Cd, Hg, Pb, Sr, Zn, Co, U, V, Mo, Cорг, Nорг, Pорг, Sорг, CO2, Ti) in the streams of the natural component of the environment "River

APA, Harvard, Vancouver, ISO, and other styles

33

Yu, K. C., C. Y. Chang, L. J. Tsai, and S. T. Ho. "Multivariate analyses on heavy metal binding fractions of river sediments in Southern Taiwan." Water Science and Technology 42, no. 7-8 (2000): 193–99. http://dx.doi.org/10.2166/wst.2000.0569.

Full text

Abstract:

This study depicts the amounts of heavy metals (Cu, Zn, Pb, Cr, Co, and Ni) bound to four geochemical compositions of sediments (carbonates, Mn oxides, Fe oxides, and organic matters), and the correlations between various geochemical compositions and their heavy-metal complexes. Hundreds of data, obtained from sediments of five main rivers (located in southern Taiwan), were analyzed by using multivariate analysis method. Among the four different geochemical compositions, the total amount of the six heavy metals bound to organic matter is the highest. Zn is easily bound to various geochemical c

APA, Harvard, Vancouver, ISO, and other styles

34

Vardanian, Iryna, Gayane Sargsyan, Oksana Sementchouk, et al. "Enhancing the content of biologically active components in cluster tomatoes using organic fertilizers." Bioactive Compounds in Health and Disease - Online ISSN: 2574-0334; Print ISSN: 2769-2426 7, no. 12 (2024): 609–22. https://doi.org/10.31989/bchd.v7i12.1512.

Full text

Abstract:

Tomatoes (Solanum lycopersicum L.) are a vital agricultural crop with significant nutritional value, attributed to their high content of vitamins, minerals, and antioxidants. The antioxidant properties of tomatoes contribute to reducing the risk of cardiovascular and oncological diseases, positioning them as an important component of a balanced diet and beneficial for public health. The application of organic fertilizers containing fulvic and humic acids is particularly relevant to ensure the production of high-quality and nutritious tomatoes. These compounds, recognized as bio stimulants in p

APA, Harvard, Vancouver, ISO, and other styles

35

Boulion, V. V. "Autochthonous and allochthonous organic matter in trophic chain of lake ecosystems." Proceedings of the Zoological Institute RAS 321, no. 2 (2017): 115–28. http://dx.doi.org/10.31610/trudyzin/2017.321.2.115.

Full text

Abstract:

This work presents analysis of mass–balance model simulating biotic flows of energy in pelagial of the large lakes of Russia (Ladoga, Onego, and Baikal) and small lake in northern part of the Karelia. The model had been developed on the basis of software package Stella and intended to predict an annual production of phytoplankton, bacterio plankton and consumers (non predatory and predatory zooplankton, planktivorous and piscivorous fishes). The input (independent) abiotic parameters of the model were latitude, mean lake depth, total phosphorus content and water color. The model analyzed an in

APA, Harvard, Vancouver, ISO, and other styles

36

ACCORNERO, A., C. MANNO, F. ESPOSITO, and M. C. GAMBI. "The vertical flux of particulate matter in the polynya of Terra Nova Bay. Part II. Biological components." Antarctic Science 15, no. 2 (2003): 175–88. http://dx.doi.org/10.1017/s0954102003001214.

Full text

Abstract:

Downward fluxes of particulate matter were investigated in the polynya of Terra Nova Bay (western Ross Sea) from February 1995 to December 1997. The main biological components were siliceous phytoplankton (diatoms, silicoflagellates and parmales), abundant faecal pellets of several types and zooplankton (mainly shelled pteropods). Vertical fluxes of particles occurred mainly through diatoms and faecal pellets in the first and second part of the summer, respectively. The highest fluxes were recurrently observed in late summer, when faeces contributed up to 100% of organic carbon. Unusually high

APA, Harvard, Vancouver, ISO, and other styles

37

Maldini, Krešimir, Neven Cukrov, Kristina Pikelj, Natalija Matić, and Marina Mlakar. "Geochemistry of Metals and Organic Matter in Water and Sediments of the Karst River Cetina, Croatia." Water 15, no. 7 (2023): 1429. http://dx.doi.org/10.3390/w15071429.

Full text

Abstract:

The Cetina River Basin (CRB) belongs to a Dinaric karst area (Croatia). According to the obtained results on water and sediment quality, the Cetina River reaches the sixth goal of Sustainable Development (source of drinking water). Together with the CRB water quality assessment, it was confirmed that sediments undoubtedly contribute to the purification of watercourses from trace metals as well as organic matter. In 5 years, water samples were collected at 20 sampling sites and sediment samples were collected at 18 sampling sites. The fresh water of the Cetina River belongs to the hydrocarbonat

APA, Harvard, Vancouver, ISO, and other styles

38

Fast, J. D., A. C. Aiken, J. Allan, et al. "Evaluating simulated primary anthropogenic and biomass burning organic aerosols during MILAGRO: implications for assessing treatments of secondary organic aerosols." Atmospheric Chemistry and Physics Discussions 9, no. 1 (2009): 4805–71. http://dx.doi.org/10.5194/acpd-9-4805-2009.

Full text

Abstract:

Abstract. Simulated primary organic aerosols (POA), as well as other particulates and trace gases, in the vicinity of Mexico City are evaluated using measurements collected during the 2006 Megacity Initiative: Local and Global Research Observations (MILAGRO) field campaigns. Since the emission inventories and dilution will directly affect predictions of total organic matter and consequently total particulate matter, our objective is to assess the uncertainties in predicted POA before testing and evaluating the performance of secondary organic aerosol (SOA) treatments. Carbon monoxide (CO) is w

APA, Harvard, Vancouver, ISO, and other styles

39

Zhang, Fangshuo, Hengyou Wang, Xinyu Zhao, and Qingsong Jiang. "Investigation on Zoning Management of Saline Soil in Cotton Fields in Alar Reclamation Area, Xinjiang." Agriculture 14, no. 1 (2023): 3. http://dx.doi.org/10.3390/agriculture14010003.

Full text

Abstract:

Aiming at assessing the problems of the high land salinity, high spatial variability of soil nutrients, sloppy management, and low efficiency in the Xinjiang region, research on the precise delineation method of field management zones is being conducted to facilitate differentiated fertilizer management for farmers and increase the level of saline soil improvement. Taking the plots in the experimental area as the research object, traditional statistics, principal component analysis, and fuzzy c-mean classification were applied to divide the management zoning in the study area, and the suitabil

APA, Harvard, Vancouver, ISO, and other styles

40

Sunil, Kumar, and Dhankhar Rajesh. "Assessment of change in soil properties before and after flooding due to the rainy season in Bhindawas wetland, Jhajjar, Haryana (India)." Indian Journal of Science and Technology 13, no. 20 (2020): 2057–64. https://doi.org/10.17485/IJST/v13i20.689.

Full text

Abstract:

Abstract <strong>Objectives:</strong> The purpose of the present study was to determine the changes in soil properties before and after flooding due to the rainy season in Bhindawas wetland. <strong>Method:</strong> A total of eighteen soil samples were collected from Bhindawas wetland, nine before and nine after flooding. Eighteen soil properties namely pH, electrical conductivity (EC), moisture content, exchangeable cations (sodium, potassium, calcium and magnesium), organic matter, total nitrogen, C/N ratio, total phosphorus and heavy metals (iron, zinc, copper, lead, nickel,

APA, Harvard, Vancouver, ISO, and other styles

41

Lyu, Ruihe, Zongbo Shi, Mohammed Salim Alam, et al. "Insight into the composition of organic compounds ( ≥ C<sub>6</sub>) in PM<sub>2.5</sub> in wintertime in Beijing, China." Atmospheric Chemistry and Physics 19, no. 16 (2019): 10865–81. http://dx.doi.org/10.5194/acp-19-10865-2019.

Full text

Abstract:

Abstract. Organic matter is a major component of PM2.5 in megacities. In order to understand the detailed characteristics of organic compounds (≥ C6) at a molecular level on non-haze and haze days, we determined more than 300 organic compounds in the PM2.5 from an urban area of Beijing collected in November–December 2016 using two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC-ToF-MS). The identified organic compounds have been classified into groups, and quantitative methods were used to calculate their concentrations. Primary emission sources make signifi

APA, Harvard, Vancouver, ISO, and other styles

42

SLOBODAN, NIĆIN, NEŠIĆ LJILJANA, and ĆIRIĆ VLADIMIR. "APPLICATION OF PRINCIPAL COMPONENT ANALYSIS TO REALIZE VARIABILITY OF CHEMICAL PROPERTIES OF CHERNOZEM." Contemporary Agriculture (2011) 60, no. 1-2 (2011): 122–29. https://doi.org/10.5281/zenodo.7309974.

Full text

Abstract:

This paper presents a practical application of the principal components analysis (PCA), as one of the methods of multivariate analysis used for reducing the dimensionality of the problem (reducing a set of a large number of variables down to a smaller number of mutually uncorrelated linear combinations). Seventeen soil properties from 95 samples were analyzed in order to single out the soil properties which have significant impact on soil variability. The paper also presents a comparison of certain results obtained by using this method and by the application of factor analysis. This research s

APA, Harvard, Vancouver, ISO, and other styles

43

Batista, Danielle Da Silva, Jonathan Willian Zangeski Novais, Susana Pacheco Pereira, et al. "Principal components analysis of the chemical attributes of the soil of a preserved Cerrado fragment." Nature and Conservation 14, no. 1 (2020): 90–100. http://dx.doi.org/10.6008/cbpc2318-2881.2021.001.0010.

Full text

Abstract:

The number of studies on the importance of Cerrado soil to biogeochemical cycles is growing, with this being the focus of most research in the Cerrado biome. The objective of this research was to verify the correlation among different chemical attributes of the soil in a Cerrado fragment located in Mãe Bonifácia Park, in Cuiabá, Mato Grosso (MT), Brazil, using principal components analysis. For this study, five soil samples were collected at 0-10 cm depth monthly from August 2015 to July 2016. After the collection and identification of the soil, chemical analyses were performed to determine th

APA, Harvard, Vancouver, ISO, and other styles

44

Amin, Muhammad, Andi Annisa Tenri Ramadhani, Rasdiana Zakaria, et al. "Carbonaceous component of Total Suspended Particulate (TSP) in Makassar City, Sulawesi Island, Indonesia." IOP Conference Series: Earth and Environmental Science 1199, no. 1 (2023): 012021. http://dx.doi.org/10.1088/1755-1315/1199/1/012021.

Full text

Abstract:

Abstract As the initial study related to carbonaceous components in Sulawesi Island, Indonesia, total suspended particulate matter (TSP) was collected in the roadside environments in Makassar city, Indonesia. The mean TSP level in this study was higher than the National Ambient Air Quality Standard (NAAQS) of Indonesia and much higher than World Health Organization (WHO) standards. It ranged from 21.6 to 838.6 μg/m3. The lowest concentration was found during the rainy days in paved site. The highest TSP level in all sites was found in the rush morning and late noon hour. It is related to the m

APA, Harvard, Vancouver, ISO, and other styles

45

Skolasińska, Katarzyna. "Suspended sediment in lowland rivers – towards identifying the ratios of mineral and organic components and their variation during the year." Geologos 27, no. 3 (2021): 173–80. http://dx.doi.org/10.2478/logos-2021-0019.

Full text

Abstract:

Abstract Concentrations of suspended sediment transported by rivers are influenced by interactions between multiple drivers that act on a range of spatial and temporal scales. Such levels vary over the year, as well as across multi-year periods. Most conventional approaches to determining suspended load are based upon analyses of total suspended sediment concentration (SSC), i.e., the sum of mineral and organic matter. This approach makes it difficult, if not impossible, to determine the impact of multiple environmental factors on changes in suspension concentration precisely. The present pape

APA, Harvard, Vancouver, ISO, and other styles

46

Chen, Yuntao, Yanfang Chen, Xinchun Xie, et al. "Chemical Characteristics of PM2.5 and Water-Soluble Organic Nitrogen in Yangzhou, China." Atmosphere 10, no. 4 (2019): 178. http://dx.doi.org/10.3390/atmos10040178.

Full text

Abstract:

Chemical characterization of fine atmospheric particles (PM2.5) is important for effective reduction of air pollution. This work analyzed PM2.5 samples collected in Yangzhou, China, during 2016. Ionic species, organic matter (OM), elemental carbon (EC), and trace metals were determined, and an Aerodyne soot-particle aerosol mass spectrometer (SP-AMS) was introduced to determine the OM mass, rather than only organic carbon mass. We found that inorganic ionic species was dominant (~52%), organics occupied about 1/4, while trace metals (~1%) and EC (~2.1%) contributed insignificantly to the total

APA, Harvard, Vancouver, ISO, and other styles

47

Ma, Jian, Qi Feng, Guang Li, et al. "Evaluation of Soil Fertility in Alpine Shrub Communities of the Qilian Mountains, Northwest China." Diversity 17, no. 3 (2025): 175. https://doi.org/10.3390/d17030175.

Full text

Abstract:

Understanding soil fertility is significant for the restoration and scientific management of shrub vegetation in the Qilian Mountains. This study focused on the soils associated with five common alpine shrub species—Salix gilashanica, Potentilla fruticosa, Caragana jubata, Caragana tangutica, and Berberis diaphana. We examined soil fertility characteristics, analyzed the relationships among soil fertility indicators, and evaluated the comprehensive fertility status of soil within shrub communities using principal component analysis. The results indicated that (1) the mean values of soil organi

APA, Harvard, Vancouver, ISO, and other styles

48

Wang, Fenglan, Binhui Li, Sheng Cao, Jiang Zhang, Quan Xu, and Qian Sang. "Experimental Study of the Fluid Contents and Organic/Inorganic Hydrocarbon Saturations, Porosities, and Permeabilities of Clay-Rich Shale." Energies 17, no. 2 (2024): 524. http://dx.doi.org/10.3390/en17020524.

Full text

Abstract:

Unlike conventional reservoirs, shale is particularly complex in its mineral composition. As typical components in shale reservoirs, clay and organic matter have different pore structures and strong interactions with fluids, resulting in complex fluid occurrence-states in shale. For example, there are both free water and adsorbed water in clay, and both free oil and ad/absorbed oil in organic matter. Key properties such as fluid content, organic/inorganic porosity, and permeability in clay-rich shale have been poorly characterized in previous studies. In this paper, we used a vacuum-imbibition

APA, Harvard, Vancouver, ISO, and other styles

49

Zhou, Xuelian, Xiaochi Zhang, Guannan Bai, et al. "Long-Term Exposure to Fine Particulate Matter (PM_2.5) Components and Precocious Puberty Among School-Aged Children: Cross-Sectional Study." JMIR Public Health and Surveillance 11 (February 7, 2025): e62861-e62861. https://doi.org/10.2196/62861.

Full text

Abstract:

Abstract Background The increasing incidence of precocious puberty is a major health challenge for Chinese children, while related risk factors remain less well explored. Exposure to ambient fine particulate matter (PM2.5) is a leading environmental hazard in China. Although certain components of PM2.5 have been reported to be endocrine disruptors for sex hormones, population-based evidence is still lacking on the association between PM2.5 exposure and precocious puberty in China. Objective Based on a cross-sectional survey covering 30 cities in 2017 to 2019, this study was designed to explore

APA, Harvard, Vancouver, ISO, and other styles

50

Tribovillard, Nicolas, Olivier Averbuch, Anne Bialkowski, and Jean-François Deconinck. "Early diagenesis of marine organic-matter and magnetic properties of sedimentary rocks: the role of iron limitation and organic-matter source organisms." Bulletin de la Société Géologique de France 173, no. 4 (2002): 295–306. http://dx.doi.org/10.2113/173.4.295.

Full text

Abstract:

Abstract The magnetic parameters of sedimentary rocks can record accurately tectonic and climatic influences upon sedimentary processes, when they are not altered during diagenesis. This paper is focused on the possible alteration of the primary magnetic-susceptibility signal during early diagenesis of marine organic matter (OM). In the late Kimmeridgian-Tithonian Argiles de Châtillon Formation (Fm.) of the Boulonnais area (northern France – lateral time equivalent of the distal organic-rich sediments of the Kimmeridge Clay Fm. of Dorset), the organic content is dominated by amorphous OM (AOM

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!