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@ARTICLE{FernandezBayo:141816,
author = {Fernandez-Bayo, Jesus D. and Saison, Carine and Geniez,
Chantal and Voltz, Marc and Vereecken, Harry and Berns, Anne
E.},
title = {{S}orption {C}haracteristics of {C}hlordecone and
{C}adusafos in {T}ropical {A}gricultural {S}oils},
journal = {Current organic chemistry},
volume = {17},
number = {24},
issn = {1385-2728},
address = {Hilversum [u.a.]},
publisher = {Bentham Science Publ.},
reportid = {FZJ-2014-00156},
pages = {2976-2984},
year = {2013},
abstract = {Banana plantations in tropical humid regions require a high
input of pesticides. Given the long history of this
practice, a number of pesticides that are now banned have
accumulated in these soils. Little is known about the
sorption of two banned insecticides, chlordecone and
cadusafos, which are known to cause adverse environmental
and health effects. We studied the sorption-desorption
characteristics (Freundlich sorption-desorption coefficient,
Kf, and partition coefficient, Kd) of these two molecules in
tropical volcanic soils with different soil properties. In
particular, we observed the effect of the chemical nature of
the soil organic carbon (SOC). The sorption of chlordecone
(35.56<d<144.96 L kg-1) and the desorption hysteresis
(apparent hysteresis index, H<0.43) were very high. Sorption
was significantly lower for cadusafos (1.47< Kd 19.94 L
kg-1) and less hysteretic (0.59< H< 1.08). The correlation
between Kd and Kfsor values and SOC content was
statistically significant for both molecules (p<0.01). KOC
anged between 1218-2547 L kg-1 for chlordecone and between
67 L kg-1 and 167 L kg-1 for cadusafos. The chemical
composition of the soil organic matter was determined using
cross-polarization magic-angle-spinning NMR spectroscopy
(CP/MAS NMR). Chlordecone was found to display a higher
affinity to soils with shorter alkyl chains and fewer
carboxyl groups, while cadusafos had a higher affinity for
soils with more oxidized OC (methoxy and carboxyl groups)
and longer alkyl chains. This highlights the complex role of
SOC chemistry on the sorption of chlordecone and the fact
that soil practices, such as the addition of fresh organic
amendments, may not efficiently enhance the sorption of
chlordecone.},
cin = {IBG-3},
ddc = {540},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {245 - Chemicals in the Environment (POF2-245)},
pid = {G:(DE-HGF)POF2-245},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000328902400003},
doi = {10.2174/13852728113179990121},
url = {https://juser.fz-juelich.de/record/141816},
}