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Journal articles on the topic 'Color dissolved organic matter'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Jin, Xin, Pengkang Jin, and Xiaochang Wang. "A study on the effects of ozone dosage on dissolved-ozone flotation (DOF) process performance." Water Science and Technology 71, no. 9 (2015): 1423–28. http://dx.doi.org/10.2166/wst.2015.115.

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Dissolved-ozone flotation (DOF) is a tertiary wastewater treatment process, which combines ozonation and flotation. In this paper, a pilot-scale DOF system fed by secondary effluent from a wastewater treatment plant (WWTP) in China was used to study the effect of ozone dosage on the DOF process performance. The results show that an ozone dosage could affect the DOF performance to a large extent in terms of color and organic matter removal as well as disinfection performance. The optimal color and organic matter removal was achieved at an ozone dosage of 0.8 mg/l. For disinfection, significant

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Kritzberg, E. S., and S. M. Ekström. "Increasing iron concentrations in surface waters – a factor behind brownification?" Biogeosciences Discussions 8, no. 6 (2011): 12285–316. http://dx.doi.org/10.5194/bgd-8-12285-2011.

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Abstract. Browning of inland waters has been noted over large parts of the Northern Hemisphere and is a phenomenon with both ecological and societal consequences. The increase in water color is generally ascribed to increasing amounts of dissolved organic matter of terrestrial origin. However, oftentimes the increase in water color is larger than that of organic matter, implying that changes in the amount of organic matter alone cannot explain the enhanced water color. Water color is known to be affected also by the quality of organic matter and the prevalence of iron. Here we investigated tre

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Kritzberg, E. S., and S. M. Ekström. "Increasing iron concentrations in surface waters – a factor behind brownification?" Biogeosciences 9, no. 4 (2012): 1465–78. http://dx.doi.org/10.5194/bg-9-1465-2012.

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Abstract. Browning of inland waters has been noted over large parts of the Northern hemisphere and is a phenomenon with both ecological and societal consequences. The increase in water color is generally ascribed to increasing concentrations of dissolved organic matter of terrestrial origin. However, oftentimes the increase in water color is larger than that of organic matter, implying that changes in the concentration of organic matter alone cannot explain the enhanced water color. Water color is known to be affected also by the quality of organic matter and the prevalence of iron. Here we in

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4

Matsuoka, Atsushi, Emmanuel Boss, Marcel Babin, et al. "Pan-Arctic optical characteristics of colored dissolved organic matter: Tracing dissolved organic carbon in changing Arctic waters using satellite ocean color data." Remote Sensing of Environment 200 (October 2017): 89–101. http://dx.doi.org/10.1016/j.rse.2017.08.009.

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Matsuoka, A., S. B. Hooker, A. Bricaud, B. Gentili, and M. Babin. "Estimating absorption coefficients of colored dissolved organic matter (CDOM) using a semi-analytical algorithm for southern Beaufort Sea waters: application to deriving concentrations of dissolved organic carbon from space." Biogeosciences 10, no. 2 (2013): 917–27. http://dx.doi.org/10.5194/bg-10-917-2013.

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Abstract. A series of papers have suggested that freshwater discharge, including a large amount of dissolved organic matter (DOM), has increased since the middle of the 20th century. In this study, a semi-analytical algorithm for estimating light absorption coefficients of the colored fraction of DOM (CDOM) was developed for southern Beaufort Sea waters using remote sensing reflectance at six wavelengths in the visible spectral domain corresponding to MODIS ocean color sensor. This algorithm allows the separation of colored detrital matter (CDM) into CDOM and non-algal particles (NAP) through

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Dong, Qiang, Shaoling Shang, and Zhongping Lee. "An algorithm to retrieve absorption coefficient of chromophoric dissolved organic matter from ocean color." Remote Sensing of Environment 128 (January 2013): 259–67. http://dx.doi.org/10.1016/j.rse.2012.10.013.

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7

Wang, Mingxing, Jiang Liu, Luo Peng, et al. "Estimation of the biogeochemical reactivities of dissolved organic matter from modified biochars using color." Science of The Total Environment 790 (October 2021): 147974. http://dx.doi.org/10.1016/j.scitotenv.2021.147974.

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Matsuoka, A., S. B. Hooker, A. Bricaud, B. Gentili, and M. Babin. "Estimating absorption coefficients of colored dissolved organic matter (CDOM) using a semi-analytical algorithm for Southern Beaufort Sea (Canadian Arctic) waters: application to deriving concentrations of dissolved organic carbon from space." Biogeosciences Discussions 9, no. 10 (2012): 13743–71. http://dx.doi.org/10.5194/bgd-9-13743-2012.

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Abstract. A series of papers have suggested that freshwater discharge, including a large amount of dissolved organic matter (DOM), has increased since the middle of the 20th century. In this study, a semi-analytical algorithm for estimating light absorption coefficients of the colored fraction of DOM (CDOM) was developed for Southern Beaufort Sea waters using remote sensing reflectance at six wavelengths in the visible spectral domain corresponding to MODIS ocean color sensor. This algorithm allows to separate colored detrital matter (CDM) into CDOM and non-algal particles (NAP) by determining

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9

Kļaviņš, Māris, Ilga Kokorīte, and Valērijs Rodinovs. "Dissolved organic matter concentration changes in river waters of Latvia." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 65, no. 1-2 (2011): 40–47. http://dx.doi.org/10.2478/v10046-011-0017-1.

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Dissolved organic matter concentration changes in river waters of Latvia Amounts of natural organic matter in surface waters reflect the character and intensity of biological processes in water bodies, human impact and depend on the physico-geographical environment and land-use in the catchments. Thus, analysis of the concentrations and loadings of organic substances to adjacent water bodies can be used to indicate environmental change and human impacts. This study revealed significant increasing trends of total organic carbon (TOC) and water colour in most of the studied Latvian rivers during

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10

Ahn, K. H., K. Y. Park, S. K. Maeng, et al. "Color removal and disinfection with UV/H2O2 system for wastewater reclamation and reuse." Water Supply 5, no. 1 (2005): 51–57. http://dx.doi.org/10.2166/ws.2005.0007.

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Reuse of wastewater effluents from secondary treatment processes in municipal wastewater treatment plants has been issued because of substantial volumes of relatively clean waters. The major components of criteria for wastewater reclamations are color, organic matter, and pathogens. An advanced oxidation process with low-pressure ultraviolet and hydrogen peroxide addition (UV/H2O2 system) has been employed for removal of the major components in the criteria for reuse of wastewater. Sand filter pretreatment was applied to remove turbidity and to improve performance of UV irradiation. The result

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Bezerra, Alanna Maria do Nascimento, Marcos Henrique Gomes Ribeiro, Artur Paiva Coutinho, Ana Emília Carvalho de Gusmão da Cunha Rabelo, and Elizabeth Amaral Pastich Gonçalves. "Performance of slow sand filters in the after-treatment of effluent from Pernambuco state textile center." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 6 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2586.

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Jean laundering generates significant effluent flows with a high organic load, color, and other pollutants, making it difficult to adjust effluent releases within legal limits. Slow Sand Filters (SSF) with downflow were tested for seven days (bench scale), to propose an after-treatment of effluents from an Effluent Treatment Plant of a jean laundry. The research evaluated the removal of the following parameters: color, turbidity, chemical and biochemical oxygen demand, conductivity, ammonia, total phosphorus and salinity of the textile effluent. The experimental apparatus had four SSF: the fir

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Loisel, Hubert, Vincent Vantrepotte, David Dessailly, and Xavier Mériaux. "Assessment of the colored dissolved organic matter in coastal waters from ocean color remote sensing." Optics Express 22, no. 11 (2014): 13109. http://dx.doi.org/10.1364/oe.22.013109.

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13

Zhu, Weining, and Qian Yu. "Inversion of Chromophoric Dissolved Organic Matter From EO-1 Hyperion Imagery for Turbid Estuarine and Coastal Waters." Geoscience and Remote Sensing, IEEE Transactions on 51, no. 6 (2013): 3286–98. http://dx.doi.org/10.1109/tgrs.2012.2224117.

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The significant implication of chromophoric dissolved organic matter (CDOM) for water quality and biogeochemical cycle leads to an increasing need of CDOM monitoring in coastal regions. Current ocean-color algorithms are mostly limited to open-sea water and have high uncertainty when directly applied to turbid coastal waters. This paper presents a semianalytical algorithm, quasi-analytical CDOM algorithm (QAA-CDOM), to invert CDOM absorption from Earth Observing-1 (EO-1) Hyperion satellite images. This algorithm was developed from a widely used ocean-color algorithm QAA and our earlier extensi

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14

Chen, Jun, Xianqiang He, Bin Zhou, and Delu Pan. "Deriving colored dissolved organic matter absorption coefficient from ocean color with a neural quasi-analytical algorithm." Journal of Geophysical Research: Oceans 122, no. 11 (2017): 8543–56. http://dx.doi.org/10.1002/2017jc013115.

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15

Sória, Marta, Vitor Emanuel Quevedo Tavares, Marília Alves Brito Pinto, et al. "Evaluation of physicochemical water parameters in watersheds of southern Brazil." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 5 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2596.

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Water-quality monitoring is one of the main instruments for water-resource management. This work therefore evaluated the water quality of the contribution basin of the Sinnott water treatment plant as well as the relationship between physicochemical water parameters, and analyzed the seasonal variation of water quality parameters as a function of rainfall. The study area encompassed the contribution basin of the Sinnott water treatment plant, formed mainly by the drainage areas of the Pelotas stream and its tributary, the Quilombo Stream, located in the city of Pelotas - Rio Grande do Sul, Bra

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Serrano, L. "Sources, abundance and disappearance of polyphenolic compounds in temporary ponds of Donana National Park (south-western Spain)." Marine and Freshwater Research 45, no. 8 (1994): 1555. http://dx.doi.org/10.1071/mf9941555.

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The abundance of polyphenolic compounds in four temporary ponds in Donana National Park (south-western Spain) was examined during three years of varying hydrology (1989-92). During flooding in 1989-90, the ponds received large amounts of allochthonous organic matter, as indicated by the relative increases in dissolved organic carbon (70-120 mg C L-1), dissolved polyphenolic compounds (7.6-12.2 mg L-1) and water colour (17-33 m-1, A440). As the ponds dried out, the concentration of dissolved polyphenols decreased rapidly in ponds with abundant submerged macrophytes, whereas the concentrations i

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Dragon, Krzysztof, Józef Górski, Roksana Kruć, Dariusz Drożdżyński, and Thomas Grischek. "Removal of Natural Organic Matter and Organic Micropollutants during Riverbank Filtration in Krajkowo, Poland." Water 10, no. 10 (2018): 1457. http://dx.doi.org/10.3390/w10101457.

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The aim of this article is to evaluate the removal of natural organic matter and micropollutants at a riverbank filtration site in Krajkowo, Poland, and its dependence on the distance between the wells and the river and related travel times. A high reduction in dissolved organic carbon (40–42%), chemical oxygen demand (65–70%), and colour (42–47%) was found in the riverbank filtration wells at a distance of 60–80 m from the river. A lower reduction in dissolved organic carbon (26%), chemical oxygen demand (42%), and colour (33%) was observed in a horizontal well. At greater distances of the we

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18

Garcia, Indiana, and Luis Moreno. "Removal of nitrogen and carbon organic matter by chitosan and aluminium sulphate." Water Supply 12, no. 1 (2012): 1–10. http://dx.doi.org/10.2166/ws.2011.111.

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River and lake waters were separated into four fractions to study the removal of nitrogen and carbon organic matter using chitosan (CH) and aluminium sulphate (AS). The fractions were very hydrophobic acid, slightly hydrophobic acid, charged hydrophilic acid and neutral hydrophilic. The results showed that the whole and fractionated water from both sources have a markedly hydrophobic character. However, lake water had a lower NOM concentration than river water. The ratio of dissolved organic carbon and dissolved organic nitrogen (DOC/DON) and dissolved inorganic nitrogen to total dissolved nit

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Krupińska, Izabela. "Impact of the Oxidant Type on the Efficiency of the Oxidation and Removal of Iron Compounds from Groundwater Containing Humic Substances." Molecules 25, no. 15 (2020): 3380. http://dx.doi.org/10.3390/molecules25153380.

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Due to the coexistence of organic matter and iron in groundwater, a certain part of the iron is present as iron-organic complexes in the form of colloids and/or dissolved complexes. The study was conducted to evaluate the impact of the type of oxidizing agent: O2, Cl2, H2O2, or KMnO4, on the efficiency of the oxidation and removal of iron compounds from three groundwaters with significantly different contents and types of organic substances among which humic and fulvic acids occurred. This study shows that after the aeration and the oxidation with Cl2 and H2O2, the increasing content of dissol

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Portilla-Delgado, Cristian S., Ana M. García-Mora, Frederic Dappozze, Chantal Guillard, and Luis A. Galeano. "Visible-Light Enhanced Catalytic Wet Peroxide Oxidation of Natural Organic Matter in the Presence of Al/Fe-Pillared Clay." Catalysts 11, no. 5 (2021): 637. http://dx.doi.org/10.3390/catal11050637.

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An Al/Fe-pillared clay catalyst (Al/Fe-PILC) prepared from low cost technical-grade reagents has been investigated in the photocatalytic Wet Peroxide Oxidation (photo-CWPO) of dissolved Natural Organic Matter (NOM) under circumneutral pH. The successful pillaring of the layered clay material was confirmed by X-ray diffraction (XRD), N2 adsorption at −196 °C, cation exchange capacity (CEC) and simultaneous thermal analysis (TGA/DSC). High levels of mineralization of the dissolved organic carbon and color removal of a synthetic NOM surrogate solution were achieved even under natural lab’s lighti

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Matilainen, Tuula, and Matti Verta. "Mercury methylation and demethylation in aerobic surface waters." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 8 (1995): 1597–608. http://dx.doi.org/10.1139/f95-753.

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Potential rates of methylmercury formation and demethylation were studied in runoff waters, sediment trap material, and aerobic water layers of five small forest lakes by radioisotope methods. In addition, the roles of microbes and particulate matter in methylation and demethylation processes were examined. Methylation rates were low (≤0.12%∙d−1) in all sites studied. Water pH (4.9–6.9) had no clear effect on methylmercury formation. Methylation took place in filtered water (nominal pore size 0.2 μm) and in formaldehyde-treated or autoclaved samples, but was strongly suppressed by both dissolv

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Fedorova, I. V., A. A. Chetverova, N. K. Alekseeva, et al. "Hydrological and hydrochemical investigation in the Lena River Delta in winter 2015–2016." Arctic and Antarctic Research, no. 3 (September 30, 2017): 107–14. http://dx.doi.org/10.30758/0555-2648-2017-0-3-107-114.

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The results of hydrological and hydrochemical research of on bodies of water: ducts and lakes of the delta of the Lena River are reported here. Studies were performed during the 2015/16 summer (July-August) and winter (April) expeditionary seasons. The present work also introduces the results of field hydrochemical analyzes made immediately after sampling. The values of hydrochemical and hydrophysical indicators of ducts and lakes such as electrical conductivity, pH, permanganate oxidability, concentration of dissolved organic carbon, water color and absorption of colored organic matter were r

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Chaichitehrani, Nazanin, Eurico J. D'Sa, Dong S. Ko, Nan D. Walker, Christopher L. Osburn, and Robert F. Chen. "Colored Dissolved Organic Matter Dynamics in the Northern Gulf of Mexico from Ocean Color and Numerical Model Results." Journal of Coastal Research 296 (July 2014): 800–814. http://dx.doi.org/10.2112/jcoastres-d-13-00036.1.

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Zuochen, LI, DUAN Hongtao, SHEN Qiushi, ZHANG Yuchao, and MA Ronghua. "The changes of water color induced by chromophoric dissolved organic matter(CDOM) during the formation of black blooms." Journal of Lake Sciences 27, no. 4 (2015): 616–22. http://dx.doi.org/10.18307/2015.0408.

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Cao, Fang, and William L. Miller. "A new algorithm to retrieve chromophoric dissolved organic matter (CDOM) absorption spectra in the UV from ocean color." Journal of Geophysical Research: Oceans 120, no. 1 (2015): 496–516. http://dx.doi.org/10.1002/2014jc010241.

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Matsuoka, A., M. Babin, D. Doxaran, et al. "A synthesis of light absorption properties of the Pan-Arctic Ocean: application to semi-analytical estimates of dissolved organic carbon concentrations from space." Biogeosciences Discussions 10, no. 11 (2013): 17071–115. http://dx.doi.org/10.5194/bgd-10-17071-2013.

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Abstract. The light absorption coefficients of particulate and dissolved materials are the main factors determining the light propagation of the visible part of the spectrum and are, thus, important for developing ocean color algorithms. While these absorption properties have recently been documented by a few studies for the Arctic Ocean (e.g., Matsuoka et al., 2007, 2011; Ben Mustapha et al., 2012), the datasets used in the literature were sparse and individually insufficient to draw a general view of the basin-wide spatial and temporal variations in absorption. To achieve such a task, we bui

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McMurtry, Michael J., Donna L. Wales, Wolfgang A. Scheider, Gail L. Beggs, and Patricia E. Dimond. "Relationship of Mercury Concentrations in Lake Trout (Salvelinus namaycush) and Smallmouth Bass (Micropterus dolomieui) to the Physical and Chemical Characteristics of Ontario Lakes." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 3 (1989): 426–34. http://dx.doi.org/10.1139/f89-057.

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Concentrations of mercury in dorsal muscle tissue of lake trout (Salvelinus namaycush) from Ontario lakes were positively correlated with variables indicating lake dystrophy (dissolved organic carbon, colour, iron, transparency) and were also correlated with watershed area and lake area. Stepwise multiple regression selected dissolved organic carbon as the only variable which explained a significant amount of variation (37%) in mercury concentrations in lake trout. The relationship between dissolved organic carbon and mercury appeared to be strongest in the group of lakes with values of dissol

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Chen, Jiang, Weining Zhu, Yuhan Zheng, Yong Q. Tian, and Qian Yu. "Monitoring seasonal variations of colored dissolved organic matter for the Saginaw River based on Landsat-8 data." Water Supply 19, no. 1 (2018): 274–81. http://dx.doi.org/10.2166/ws.2018.077.

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Abstract Remote sensing is an effective tool for studying CDOM (colored dissolved organic matter) variations and its relevant environmental factors. Monitoring CDOM distribution and dynamics in small water is often limited by the coarse spatial resolution of traditional ocean color sensors. In this study, because of its high spatial resolution of 30 m, Landsat-8 data were used to assess seasonal variations of CDOM in the Saginaw River, by using an empirical statistic model. Pearson correlation analysis between CDOM variations and other environmental factors, such as temperature, discharge, and

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Albrektiene, Ramune, Mindaugas Rimeika, and Anzelika Jurkiene. "Analysis of Coagulation Processes for the Groundwater Treatment." Selected Scientific Papers - Journal of Civil Engineering 8, no. 1 (2013): 51–58. http://dx.doi.org/10.2478/sspjce-2013-0006.

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Abstract Coagulation process is widely used for removal of natural organic matters (NOM) and for water color intensity reduction. The efficiency of coagulation process depends on many different factors. Aim of this research is to investigate coagulation process under different conditions. During the research coagulation process was held at different pH values (5.5; 6.0; 6.5), at different water alkalinity and at different water turbidity. It was found that removal of NOM and water color intensity reduction is most effective at pH values from 5.5 to 6.0. At these conditions water color intensit

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Iuculano, Francesca, Carlos M. Duarte, Jaime Otero, Xosé Antón Álvarez-Salgado, and Susana Agustí. "Posidonia oceanica as a Source of Chromophoric Dissolved Organic Matter for the Oligotrophic NW Mediterranean Coast." Journal of Marine Science and Engineering 8, no. 11 (2020): 911. http://dx.doi.org/10.3390/jmse8110911.

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Posidonia oceanica is a well-recognized source of dissolved organic matter (DOM) derived from exudation and leaching of seagrass leaves, but little is known about its impact on the chromophoric fraction of DOM (CDOM). In this study, we monitored for two years the optical properties of CDOM in two contrasting sites in the Mallorca Coast (Balearic Islands). One site was a rocky shore free of seagrass meadows, and the second site was characterized by the accumulation of non-living seagrass material in the form of banquettes. On average, the integrated color over the 250–600 nm range was almost 6-

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Matsuoka, A., A. Bricaud, R. Benner, et al. "Tracing the transport of colored dissolved organic matter in water masses of the Southern Beaufort Sea: relationship with hydrographic characteristics." Biogeosciences Discussions 8, no. 6 (2011): 11003–40. http://dx.doi.org/10.5194/bgd-8-11003-2011.

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Abstract. Light absorption by colored dissolved organic matter (CDOM) (aCDOM(λ)) plays an important role in the heat budget of the Arctic Ocean, contributing to the recent decline in sea ice, as well as in biogeochemical processes. We investigated aCDOM(λ) in the Southern Beaufort Sea where a significant amount of CDOM is delivered by the Mackenzie River. In the surface layer, aCDOM(440) showed a strong and negative correlation with salinity, indicating strong river influence and conservative transport in the river plume. Below the mixed layer, a weak but positive correlation between aCDOM(440

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Matsuoka, A., A. Bricaud, R. Benner, et al. "Tracing the transport of colored dissolved organic matter in water masses of the Southern Beaufort Sea: relationship with hydrographic characteristics." Biogeosciences 9, no. 3 (2012): 925–40. http://dx.doi.org/10.5194/bg-9-925-2012.

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Abstract. Light absorption by colored dissolved organic matter (CDOM) [aCDOM(λ)] plays an important role in the heat budget of the Arctic Ocean, contributing to the recent decline in sea ice, as well as in biogeochemical processes. We investigated aCDOM(λ) in the Southern Beaufort Sea where a significant amount of CDOM is delivered by the Mackenzie River. In the surface layer, aCDOM(440) showed a strong and negative correlation with salinity, indicating strong river influence and conservative transport in the river plume. Below the mixed layer, a weak but positive correlation between aCDOM(440

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Shi, Xiaolei, Chunhua Xu, Hongying Hu, Fang Tang, and Lijuan Sun. "Characterization of dissolved organic matter in the secondary effluent of pulp and paper mill wastewater before and after coagulation treatment." Water Science and Technology 74, no. 6 (2016): 1346–53. http://dx.doi.org/10.2166/wst.2016.311.

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Meeting the regulatory discharge standards for pulp and paper mill wastewater has become ever more difficult because of its recalcitrant and colored dissolved organic matter (DOM). In this study, the variation of DOM from the secondary effluent of pulp and paper mill wastewater before and after coagulation was investigated based on hydrophobicity/hydrophilicity, apparent molecular weight (MW) and fluorescence. DOM fractions of the secondary effluent were all with the apparent MW &lt;20 kDa. Particularly, the hydrophobic acids (HOA) fraction, mainly composed of humic-like materials, was the

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Kobayashi, Shiho, Satoshi Nakada, Masaki Nakajima, et al. "Visualization of the Distribution of Dissolved Organic Matter in Osaka Bay Using a Satellite Ocean Color Sensor (COMS/GOCI)." Journal of Water and Environment Technology 15, no. 2 (2017): 55–64. http://dx.doi.org/10.2965/jwet.16-055.

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Ford, Robert C., Heyo Van Iten, and George R. Clark. "Microstructure and composition of the periderm of conulariids." Journal of Paleontology 90, no. 3 (2016): 389–99. http://dx.doi.org/10.1017/jpa.2016.63.

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AbstractTransmitted light and scanning electron imaging of sectioned specimens ofConulariaandParaconularia, prepared using HCl etching and critical point drying, revealed that their periderm is composed of extremely thin (approximately 0.5–3 µm), variably distinct microlamellae that are alternately organic poor and organic rich. Organic-rich microlamellae are cross-connected by slender strands of organic matter originally embedded in calcium phosphate, which in etched specimens has been dissolved. Microlamellae may be organized in thicker (approximately 5–75 µm) layers, or macrolamellae, that

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They, Ng Haig, David Motta Marques, Rafael Siqueira Souza, and Lúcia Ribeiro Rodrigues. "Short-Term Photochemical and Biological Unreactivity of Macrophyte-Derived Dissolved Organic Matter in a Subtropical Shallow Lake." Journal of Ecosystems 2013 (July 30, 2013): 1–9. http://dx.doi.org/10.1155/2013/316709.

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Macrophytes have been associated with low bacterial metabolism in the littoral zones of lake Mangueira, but an explanation for this pattern is largely unknown. In this study, macrophyte-derived DOM was incubated in situ for the measurement of the effect of grazers, bacteria, and light on its degradation in three experiments. The water was separated in bulk, bacterial, and control (+ HgCl2) fractions and exposed to or hidden from sunlight for 120 h. Unchange in bacterial variables in the bulk fraction suggested a combined control of radiation and grazing on bacteria. Light treatment increased b

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Matsuoka, A., M. Babin, D. Doxaran, et al. "A synthesis of light absorption properties of the Arctic Ocean: application to semianalytical estimates of dissolved organic carbon concentrations from space." Biogeosciences 11, no. 12 (2014): 3131–47. http://dx.doi.org/10.5194/bg-11-3131-2014.

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Abstract. In addition to scattering coefficients, the light absorption coefficients of particulate and dissolved materials are the main factors determining the light propagation of the visible part of the spectrum and are, thus, important for developing ocean color algorithms. While these absorption properties have recently been documented by a few studies for the Arctic Ocean (e.g., Matsuoka et al., 2007, 2011; Ben Mustapha et al., 2012), the data sets used in the literature were sparse and individually insufficient to draw a general view of the basin-wide spatial and temporal variations in a

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Cherukuru, Nagur, Patrick Martin, Nivedita Sanwlani, Aazani Mujahid, and Moritz Müller. "A Semi-Analytical Optical Remote Sensing Model to Estimate Suspended Sediment and Dissolved Organic Carbon in Tropical Coastal Waters Influenced by Peatland-Draining River Discharges off Sarawak, Borneo." Remote Sensing 13, no. 1 (2020): 99. http://dx.doi.org/10.3390/rs13010099.

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Coastal water quality degradation is a global challenge. Marine pollution due to suspended sediments and dissolved matter impacts water colour, biogeochemistry, benthic habitats and eventually human populations that depend on marine resources. In Sarawak (Malaysian Borneo), peatland-draining river discharges containing suspended sediments and dissolved organic carbon influence coastal water quality at multiple locations along the coast. Optical remote sensing is an effective tool to monitor coastal waters over large areas and across remote geographic locations. However, the lack of regional op

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Tanentzap, Andrew J., Amelia Fitch, Chloe Orland, et al. "Chemical and microbial diversity covary in fresh water to influence ecosystem functioning." Proceedings of the National Academy of Sciences 116, no. 49 (2019): 24689–95. http://dx.doi.org/10.1073/pnas.1904896116.

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Invisible to the naked eye lies a tremendous diversity of organic molecules and organisms that make major contributions to important biogeochemical cycles. However, how the diversity and composition of these two communities are interlinked remains poorly characterized in fresh waters, despite the potential for chemical and microbial diversity to promote one another. Here we exploited gradients in chemodiversity within a common microbial pool to test how chemical and biological diversity covary and characterized the implications for ecosystem functioning. We found that both chemodiversity and g

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Bursill, D., J. van Leeuwen, and M. Drikas. "Problems related to particulate and dissolved components in water: the importance of organic matter." Water Supply 2, no. 1 (2002): 155–62. http://dx.doi.org/10.2166/ws.2002.0020.

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Natural organic matter (NOM) of microbial, animal and vegetable origin in reservoir catchments is the key factor influencing most, if not all water treatment processes. The character of the NOM and its involvement in water treatment processes requires greater understanding for determination of improved removal processes and interactions with other water contaminants. It is considered that a greater understanding of NOM reactions would lead to far better predictive capacity for water treatment designers and operators to minimise its impacts in treated water. Maximising the removal of NOM in the

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Siswanto, Eko, Junwu Tang, Hisashi Yamaguchi, et al. "Empirical ocean-color algorithms to retrieve chlorophyll-a, total suspended matter, and colored dissolved organic matter absorption coefficient in the Yellow and East China Seas." Journal of Oceanography 67, no. 5 (2011): 627–50. http://dx.doi.org/10.1007/s10872-011-0062-z.

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Launois, T., S. Belviso, L. Bopp, C. G. Fichot, and P. Peylin. "A new model for the global biogeochemical cycle of carbonyl sulfide – Part 1: Assessment of direct marine emissions with an oceanic general circulation and biogeochemistry model." Atmospheric Chemistry and Physics Discussions 14, no. 14 (2014): 20677–720. http://dx.doi.org/10.5194/acpd-14-20677-2014.

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Abstract. The global budget of tropospheric carbonyl sulfide (OCS) is believed to be at equilibrium because background air concentrations have remained roughly stable over at least the last decade. Since the uptakes of OCS by leaves (associated to photosynthesis) and soils have been revised significantly upwards recently, an equilibrated budget can only be obtained with a compensatory source of OCS. It has been assumed that the missing source of OCS comes from the low latitude ocean, following the incident solar flux. The present work uses parameterizations of major production and removal proc

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Jayasinghe, Amadini, Scott Elliott, Anastasia Piliouras, et al. "Modeling Functional Organic Chemistry in Arctic Rivers: An Idealized Siberian System." Atmosphere 11, no. 10 (2020): 1090. http://dx.doi.org/10.3390/atmos11101090.

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Rivers of the Arctic will become ever more important for the global climate, since they carry a majority of continental dissolved organic carbon flux into the rapidly changing polar ocean. Aqueous organics comprise a wide array of functional groups, several of which are likely to impact coastal and open water biophysical properties. Light attenuation, interfacial films, aerosol formation, gas release and momentum exchange can all be cited. We performed Lagrangian kinetic modeling for the evolution of riverine organic chemistry as the molecules in question make their way from the highlands to A

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Joshi, Ishan D., Eurico J. D'Sa, Christopher L. Osburn, et al. "Assessing chromophoric dissolved organic matter (CDOM) distribution, stocks, and fluxes in Apalachicola Bay using combined field, VIIRS ocean color, and model observations." Remote Sensing of Environment 191 (March 2017): 359–72. http://dx.doi.org/10.1016/j.rse.2017.01.039.

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Zhou, Jun, Dan Chen, Yu Jiang, Kai Yang, Hongyu Wang, and Jie Zhou. "Removal of color caused by dissolved organic matter from groundwater by electroflotation-filtration continuous flow reactor and optimization by response surface methodology." Desalination and Water Treatment 57, no. 2 (2015): 754–64. http://dx.doi.org/10.1080/19443994.2015.1084532.

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Dierssen, Heidi M., Raphael M. Kudela, John P. Ryan, and Richard C. Zimmerman. "Red and black tides: Quantitative analysis of water-leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments." Limnology and Oceanography 51, no. 6 (2006): 2646–59. http://dx.doi.org/10.4319/lo.2006.51.6.2646.

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Bonelli, Ana Gabriela, Vincent Vantrepotte, Daniel Schaffer Ferreira Jorge, et al. "Colored dissolved organic matter absorption at global scale from ocean color radiometry observation: Spatio-temporal variability and contribution to the absorption budget." Remote Sensing of Environment 265 (November 2021): 112637. http://dx.doi.org/10.1016/j.rse.2021.112637.

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Machenbach, I., T. Leiknes, and H. Ødegaard. "Coagulation/submerged hollow-fibre ultrafiltration for natural organic matter removal." Water Supply 3, no. 5-6 (2003): 401–7. http://dx.doi.org/10.2166/ws.2003.0195.

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Experiments were carried out to investigate the removal of humic substances from highly coloured raw water (50 mg Pt/L) by coagulation and outside-in hollow-fibre membrane filtration. Chitosan, a cationic biopolymer produced from crustacean shells, and polyaluminium chloride (PACl) were used as coagulants. The rate of permeability decline was determined for different backwash frequencies and different fluxes at a 95% water recovery of the membrane. Coagulation with PACl gave a good and consistent permeate quality with removals of 95.6%, 84.9%, and 66.1% for true colour, UV absorbers, and disso

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Ahn, Yu-Hwan. "Development of an Inverse Model from Ocean Reflectance." Marine Technology Society Journal 33, no. 1 (1999): 69–80. http://dx.doi.org/10.4031/mtsj.33.1.9.

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An inverse ocean color model with three components—chlorophyll, suspended sediment and dissolved organic matter—is developed to extract the constituents of seawater from the surface reflectance (400‐700 nm) in oligotrophic, eutrophic and turbid waters. Ocean reflectance obtained from just beneath the sea surface by a spectral radiometer (with 61 bands) is associated with four specific absorption and backscattering coefficients of seawater constituents, including heterotrophic organisms and seawater itself. Although many semi-analytical methods have been used before, this is the first time to a

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Launois, T., S. Belviso, L. Bopp, C. G. Fichot, and P. Peylin. "A new model for the global biogeochemical cycle of carbonyl sulfide – Part 1: Assessment of direct marine emissions with an oceanic general circulation and biogeochemistry model." Atmospheric Chemistry and Physics 15, no. 5 (2015): 2295–312. http://dx.doi.org/10.5194/acp-15-2295-2015.

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Abstract. The global budget of tropospheric carbonyl sulfide (OCS) is believed to be at equilibrium because background air concentrations have remained roughly stable over at least the last decade. Since the uptake of OCS by leaves (associated with photosynthesis) and soils have been revised significantly upwards recently, an equilibrated budget can only be obtained with a compensatory source of OCS. It has been assumed that the missing source of OCS comes from the low-latitude ocean, following the incident solar flux. The present work uses parameterizations of major production and removal pro

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