Academic literature on the topic 'Organic-carbon partitioning coefficient (Koc)'

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Journal articles on the topic "Organic-carbon partitioning coefficient (Koc)"

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Deinkuro, Nimisingha Sanchez, Charles William Knapp, Morufu Olalekan Raimi, and Nanlok Henry Nimlang. "Environmental Fate of Toxic Volatile Organics from Oil Spills in the Niger Delta Region, Nigeria." International Journal of Environment, Engineering & Education 3, no. 3 (2021): 89–101. https://doi.org/10.5281/zenodo.5842939.

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  Over the years, the environmental degradation of ecological resources from crude oil pollution and its human health impacts is receiving more global attention. The utilization of environmental models capable of predicting the fate, transport, and toxicity of chemicals in spilt crude oil can provide essential knowledge required to deal with the complexity associated with the fate of volatile petroleum chemicals in the environment. This paper explores the environmental fate of toxic volatile organics from an oil spill in the Niger Delta Region of Nigeria. Results from the literature impli
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Deinkuro, Nimisingha Sanchez, Charles William Knapp, Morufu Olalekan Raimi, and Nanlok Henry Nimlang. "Environmental Fate of Toxic Volatile Organics from Oil Spills in the Niger Delta Region, Nigeria." International Journal of Environment, Engineering and Education 3, no. 3 (2021): 89–101. http://dx.doi.org/10.55151/ijeedu.v3i3.64.

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Over the years, the environmental degradation of ecological resources from crude oil pollution and its human health impacts is receiving more global attention. The utilization of environmental models capable of predicting the fate, transport, and toxicity of chemicals in spilt crude oil can provide essential knowledge required to deal with the complexity associated with the fate of volatile petroleum chemicals in the environment. This paper explores the environmental fate of toxic volatile organics from an oil spill in the Niger Delta Region of Nigeria. Results from the literature implicated s
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Takigami, H., N. Taniguchi та Y. Shimizu. "Sorption and desorption of 17β-estradiol to natural sediment". Water Science and Technology 64, № 7 (2011): 1473–78. http://dx.doi.org/10.2166/wst.2011.527.

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The sorption and desorption of 17β-estradiol (E2) to various natural sediment were investigated. First, the quantitative solvent–water partition indices were measured. Significant differences were found between the n-octanol–water partition coefficient (KOW) and the n-hexane–water partition coefficient (KHW) of E2. The value of KHW (Log KHW = 0.07) is lower than those of two to four ring polyaromatic hydrocarbons (PAHs), while the value of KOW (Log KOW = 3.99) and that of organic matter–water partition coefficient (KOC) onto humic acid (Log KOC = 4.30) were similar to those of the PAHs. Five n
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Islam, Mohammad Showkatul, Hongde Zhou, and Richard G. Zytner. "Fate kinetic coefficients and correlation models for tetrabromobisphenol A (TBBPA) in membrane bioreactors and conventional activated sludge process." Journal of Water Reuse and Desalination 6, no. 1 (2015): 175–87. http://dx.doi.org/10.2166/wrd.2015.025.

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Tetrabromobisphenol A (TBBPA) is a fire retardant with endocrine disruption properties, which unfortunately has been detected in trace amounts in various environmental samples. Studies have shown that TBBPA enters the aquatic environment, sediments, soils and biota predominantly through the wastewater treatment process. The dominant contributor to the fate and transport of TBBPA in wastewater is biosorption by the sludge matrix. Accordingly, the goal of this research was to determine the fate kinetics, biosorption correlation models and mechanisms of TBBPA from both conventional activated slud
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He, J., and R. Balasubramanian. "The exchange of SVOCs across the air-sea interface in Singapore's coastal environment." Atmospheric Chemistry and Physics Discussions 9, no. 3 (2009): 13235–69. http://dx.doi.org/10.5194/acpd-9-13235-2009.

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Abstract. Coastal areas are vulnerable to the accumulation of semi-volatile organic compounds such as PAHs, OCPs and PCBs from atmospheric inputs. Dry particulate and wet depositions, and air-water diffusive exchange in the Singapore's south coastal area, where most of chemical and oil refinery industries are situated in, were estimated. Based on a yearly dataset, the mean annual dry particulate deposition fluxes of ∑16PAHs, ∑7OCPs and ∑21PCBs were 1328.8±961.1 μg m−2 y−1, 5421.4±3426.7 ng m−2 y−1 and 811.8±578.3 ng m−2 y−1, and the wet deposition of ∑16PAHs and ∑7OCPs were 6667.1±1745.2 and 1
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He, J., and R. Balasubramanian. "The exchange of SVOCs across the air-sea interface in Singapore's coastal environment." Atmospheric Chemistry and Physics 10, no. 4 (2010): 1837–52. http://dx.doi.org/10.5194/acp-10-1837-2010.

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Abstract. Coastal areas are vulnerable to the accumulation of semivolatile organic compounds, such as PAHs, OCPs and PCBs from atmospheric inputs. Dry particulate and wet depositions, and air-water diffusive exchange in the Singapore's south coastal area, where most of chemical and oil refinery industries are situated in, were estimated. Based on a yearly dataset, the mean annual dry particulate deposition fluxes of ∑16-PAHs, ∑7 OCPs and ∑21 PCBs were 1328.8±961.1 μg m−2 y−1, 5421.4±3426.7 ng m−2 y−1 and 811.8±578.3 ng m−2 y−1, and the wet deposition of ∑16-PAHs and ∑7 OCPs were 6667.1±1745.2
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Mörtl, Mária, Orsolya Kereki, Béla Darvas, et al. "Study on Soil Mobility of Two Neonicotinoid Insecticides." Journal of Chemistry 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/4546584.

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Movement of two neonicotinoid insecticide active ingredients, clothianidin (CLO) and thiamethoxam (TMX), was investigated in different soil types (sand, clay, or loam) and in pumice. Elution profiles were determined to explore differences in binding capacity. Soil characterized by high organic matter content retained the ingredients, whereas high clay content resulted in long release of compounds. Decrease in concentration was strongly influenced by soil types: both CLO and TMX were retained in loam and clay soils and showed ready elution through sandy soil and pumice. Elution capability of th
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Willett, Cammy D., Erin M. Grantz, Matthew G. Sena, Jung Ae Lee, Kristofor R. Brye, and Jessica A. Clarke. "Soil sorption characteristics of benzobicyclon hydrolysate and estimated leaching risk in soils used for rice production." Environmental Chemistry 17, no. 6 (2020): 445. http://dx.doi.org/10.1071/en19189.

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Environmental contextThe behaviour of herbicides in the environment is largely determined by the partitioning of the compounds between soil solids and soil solution. We determined that the rice herbicide-metabolite benzobicyclon hydrolysate partitions more into soil solution, and does so increasingly as pH increases. These results indicate that benzobicyclon hydrolysate is a risk for leaching in much of the rice-producing area in the US mid-South. AbstractBenzobicyclon hydrolysate (BH) is the major metabolite and active molecule in the pro-herbicide benzobicyclon (BZB), which is pending regist
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Mitrić, Siniša, Mihajlo Marković, Mladen Babić, Milan Šipka, Dušica Pešević, and Duško Dragićević. "PHYSICAL-CHEMICAL CHARACTERISTICS OF HERBICIDES USED FOR MAIZE PRODUCTION IN BIH AS FACTORS OF POTENTIAL HERBICIDE LEACHING IN GROUNDWATER." Radovi Šumarskog fakulteta Univerziteta u Sarajevu 21, no. 1 (2016): 297–305. http://dx.doi.org/10.54652/rsf.2016.v1.i1.306.

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UDK 631.4:632.954; 633.1:632.954(497.6)
 The aim of the study is to present the elements which must be considered while determining the risk of the mobility of the herbicides. Herbicides used for maize production have the special eco toxical significance and special risk because some are potentially mobile, they are used on the large surfaces during the rainy period and near rivers.
 Behaviour of the herbicides in the environment, particularly in the soil is very complex. It does not depend only on the characteristics of the herbicide, but on the many factors of the environment which
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Ahn, Jeonghyeon, Guiying Rao, Mustafa Mamun, and Eric P. Vejerano. "Soil–air partitioning of volatile organic compounds into soils with high water content." Environmental Chemistry 17, no. 8 (2020): 545. http://dx.doi.org/10.1071/en20032.

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Environmental contextAssessing environmental and human health impacts of chemical spills relies on information about how chemicals move across multiple environments. We measured volatile contaminants in the air above soil saturated with water to provide estimates of air concentrations of selected chemicals released to soil from an oil refinery in Texas during Hurricane Harvey. Estimated concentrations were below recommended exposure limits, even in a worst-case scenario. AbstractThe emission of volatile organic compounds (VOCs) from soil into air is affected by soil moisture dynamics, soil tem
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Dissertations / Theses on the topic "Organic-carbon partitioning coefficient (Koc)"

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Nobile, Cécile. "Phytodisponibilité du phosphore dans les sols agricoles de La Réunion fertilisés sur le long-terme avec des résidus organiques : la dose d’apport est-elle le seul déterminant à prendre en compte ?" Thesis, La Réunion, 2017. http://www.theses.fr/2017LARE0059/document.

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Le recyclage des résidus organiques (RO) en agriculture pourrait permettre de limiter l’utilisation des ressources minérales de phosphore (P), à condition de déterminer leur efficacité pour fournir du P aux cultures. L’objectif de ce travail était donc d’étudier les mécanismes déterminant l’effet des RO apportés au sol sur la biodisponibilité du P pour la plante (phytodisponibilité). Ce travail a été basé sur cinq essais de terrain à La Réunion, fertilisés sur une décennie avec des fertilisants organiques ou minéraux, et sur des expérimentations d’incubations en conditions contrôlées et de cul
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