Sorption of Pesticides on Natural Geosorbents

Gagné, Jean‐Pierre; Gouteux, Bruno; Soubaneh, Youssouf Djibril; Brindle, Jean-Rock

doi:10.5772/13448

Cited by 5 publications

(1 citation statement)

References 94 publications

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“…Linear and Freundlich models can be used to describe and quantify the sorption-desorption isotherms of B8-1413 and B9-1679 onto sediments in equilibrium conditions (Gagné et al, 2011).…”

Section: Sorption Models and Data Treatmentsmentioning

confidence: 99%

Sorption and competition of two persistent organic pesticides onto marine sediments: Relevance to their distribution in aquatic system

et al. 2015

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“…Linear and Freundlich models can be used to describe and quantify the sorption-desorption isotherms of B8-1413 and B9-1679 onto sediments in equilibrium conditions (Gagné et al, 2011).…”

Section: Sorption Models and Data Treatmentsmentioning

confidence: 99%

Sorption and competition of two persistent organic pesticides onto marine sediments: Relevance to their distribution in aquatic system

et al. 2015

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Persistence, variance and toxic levels of organochlorine pesticides in fluvial sediments and the role of black carbon in their retention

Parween

Ramanathan

Khillare

et al. 2014

Environ Sci Pollut Res

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The present study assesses the persistence and variation of organochlorine pesticides (OCPs) and their regulation by total organic carbon (TOC) and black carbon (BC) in freshwater sediment. Sediment samples from the Yamuna River, a major tributary of the Ganges (one of the most populated and intensively used rivers in Asia), had high levels of Σ20OCPs (21.41 to 139.95 ng g(-1)). β-Hexachlorocyclohexane (β-HCH) was the most predominant component. ΣHCH and Σdichloro-diphenyl-trichloroethane (DDT) constituted ~86% of Σ20OCPs. Isomer ratios indicated fresh usage of lindane, DDT and technical-grade HCH. Toxicological comparison with freshwater sediment quality guidelines showed γ-HCH and DDT at high levels of concern. β-HCH, α-HCH, endrin, heptachlor epoxide, dichloro-diphenyl-dichloroethane (DDD), dichloro-diphenyl-dichloroethylene and chlordane were above some of the guideline levels. TOC and BC had mean concentrations of 1.37 ± 0.51% and 0.46 ± 0.23 mg g(-1), respectively. BC constituted 1.25 to 10.56% of TOC. We observed low to moderate correlations of BC with isomers of HCH, p,p'-DDT and methoxychlor while of TOC with Σ20OCPs, γ-HCH, endosulfan sulfate and methoxychlor. Principal component analysis enabled correlating and clustering of various OCPs, BC and TOC. OCP distribution was related with pH, electrical conductivity, soil moisture and finer fractions of sediment. OCPs with similarity in properties that determine their interactions with carbonaceous components of sediment clustered together. A number of factors may, thus, be involved in the regulation of interactive forces between BC and OCPs. BC in this study may be more important than TOC in the retention of some OCPs into fluvial sediments, thereby reducing their bioavailability. The finding is probably the first of its kind to report and emphasises the role of BC in the persistence of OCPs in fluvial sediments.

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Effect of salinity on the fate of pesticides in irrigated systems: a first overview

Khouni,

Hammecker,

Grunberger

et al. 2023

Environ Sci Pollut Res

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Sorption of Pesticides on Natural Geosorbents

Cited by 5 publications

References 94 publications

Sorption and competition of two persistent organic pesticides onto marine sediments: Relevance to their distribution in aquatic system

Sorption and competition of two persistent organic pesticides onto marine sediments: Relevance to their distribution in aquatic system

Persistence, variance and toxic levels of organochlorine pesticides in fluvial sediments and the role of black carbon in their retention

Effect of salinity on the fate of pesticides in irrigated systems: a first overview

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