Movement of 2,4,5-T Through Large Soil Columns

O’Connor, G. A.; Wierenga, P. J.; Cheng, H. H.; Doxtader, K. G.

doi:10.1097/00010694-198009000-00007

Cited by 50 publications

(27 citation statements)

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“…The sorption-desorption hysteresis was quantified for each sorbent-solute solution system using the index defined by O'Connor et al [24] and Barriuso et al [25]:…”

Section: Hysteresis Indexmentioning

confidence: 99%

Sorption hysteresis of Cd(II) and Pb(II) on natural zeolite and bentonite

Hamidpour

Kalbasi

Afyuni

et al. 2010

Journal of Hazardous Materials

136

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“…The sorption-desorption hysteresis was quantified for each sorbent-solute solution system using the index defined by O'Connor et al [24] and Barriuso et al [25]:…”

Section: Hysteresis Indexmentioning

confidence: 99%

Sorption hysteresis of Cd(II) and Pb(II) on natural zeolite and bentonite

Hamidpour

Kalbasi

Afyuni

et al. 2010

Journal of Hazardous Materials

136

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“…Hysteresis index (HI) was calculated according to the ratio of Freundlich exponents [41] Hysteresis index = n des n sorp (7) where the n des and n sorp are desorption and sorption exponents, respectively. Among the three pesticides, maximum hysteresis effect was observed for lindane.…”

Section: Sorption-desorption Hysteresismentioning

confidence: 99%

Adsorption and desorption characteristics of lindane, carbofuran and methyl parathion on various Indian soils

Krishna

Philip

2008

Journal of Hazardous Materials

125

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“…In this table are also given the hysteresis coefficients, H, calculated according to: H = nf~/nf.~ Eq. (11) where nf_~ and rlf.ck= ale the Freundlich nf constants obtained from the sorption and desorption data, respectively [10,28,29]. Atrazine sorption-desorption was hysteretic in all systems (H< 1), but some differences in the desorption behaviour were found when LSSDOM was used instead of CaC!…”

Section: Desorption Experimentsmentioning

confidence: 99%

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

1998

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Liquid sewage sludge (LSS) addition to soil incorporates both insoluble suspended organic material and large amounts of dissolved organic matter (LSSDOM) which can influence the sorption-desorption behaviour of pestieides by soil constituents. Batch sorption isotherm techniques were used to determine the relative effect of the insoluble and dissolved organic matter from a LSS on the sorption and desorption of the herbicide atrazine by soil. Atrazine sorption and desorption isotherms were obtained on soil, LSS, LSS-amended soil, and LSSDOM-pretreated soil and described by the Frenndlich equation. The overall effect of LSS addition to soil (insoluble and dissolved organic matter) was to increase atrazine sorption, due to the high sorption capacity of the added insoluble organic matter. In contrast, LSSDOM, which was mainly constituted by low molecular weight molecules, decreased atrazine sorption by the soil. No evidences for stable interactions in solution between LSSDOM and atrazine were found, thus suggesting processes taking place at the soil/solution interface, such as competition for sorption sites on the soil surface, are the main responsible for the observed decrease in atrazine sorption by LSSDOM. Desorption of atrazine from soil was also enhanced by LSSDOM, but this effect was highly reduced when the soil had been pretreated with LSS (insoluble and soluble organic matter) or with LSSDOM alone. In these cases, interactions of LSSDOM with the soil surface have already taken place before the desorption experiment and the LSSDOM effects during desorption are less evident. The results of this work suggest that LSSDOM appfied to soils may enhance the risk of groundwater contamination by promoting atrazine desorption from soil, especially when the soil surfaces are free ofLSSDOM.

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Movement of 2,4,5-T Through Large Soil Columns

Cited by 50 publications

References 0 publications

Sorption hysteresis of Cd(II) and Pb(II) on natural zeolite and bentonite

Sorption hysteresis of Cd(II) and Pb(II) on natural zeolite and bentonite

Adsorption and desorption characteristics of lindane, carbofuran and methyl parathion on various Indian soils

Effect of liquid sewage sludge addition on atrazine sorption and desorption by soil

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