@article{fdi:010062084,
  title = {{S}orption characteristics of chlordecone and cadusafos in tropical agricultural soils},
  author = {{F}ernandez {B}ayo, {J}esus and {S}aison, {C}arine and {G}eniez, {C}hantal and {V}oltz, {M}. and {V}ereecken, {H}. and {B}erns, {A}. {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}anana plantations in tropical humid regions require a high input of pesticides. {G}iven the long history of this practice, a number of pesticides that are now banned have accumulated in these soils. {L}ittle is known about the sorption of two banned insecticides, chlordecone and cadusafos, which are known to cause adverse environmental and health effects. {W}e studied the sorption-desorption characteristics ({F}reundlich sorption-desorption coefficient, {K}-f, and partition coefficient, {K}-d) of these two molecules in tropical volcanic soils with different soil properties. {I}n particular, we observed the effect of the chemical nature of the soil organic carbon ({SOC}). {T}he sorption of chlordecone (35.56< {K}-d < 144.96 {L} kg(-1)) and the desorption hysteresis (apparent hysteresis index, {H}<0.43) were very high. {S}orption was significantly lower for cadusafos (1.47< {K}-d < 19.94 {L} kg(-1)) and less hysteretic (0.59 < {H} < 1.08). {T}he correlation between {K}-d and {K}-fsor values and {SOC} content was statistically significant for both molecules (p<0.01). {K}-{OC} ranged between 1218-2547 {L} kg(-1) for chlordecone and between 67 {L} kg(-1) and 167 {L} kg(-1) for cadusafos. {T}he chemical composition of the soil organic matter was determined using cross-polarization magic-angle-spinning {NMR} spectroscopy ({CP}/{MAS} {NMR}). {C}hlordecone 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. {T}his 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.},
  keywords = {{C}adusafos ; {C}hlordecone ; {O}rganic matter ; {SOC} chemistry ; {S}orption ; {V}olcanic {S}oils ; {CPMAS}-{NMR} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{C}urrent {O}rganic {C}hemistry},
  volume = {17},
  numero = {24},
  pages = {2976--2984},
  ISSN = {1385-2728},
  year = {2013},
  DOI = {10.2174/13852728113179990121},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062084},
}