@article{fdi:010058848, title = {{C}hlordecone retention in the fractal structure of volcanic clay}, author = {{W}oignier, {T}. and {C}lostre, {F}. and {M}acarie, {H}erv{\'e} and {J}annoyer, {M}.}, editor = {}, language = {{ENG}}, abstract = {{C}hlordecone ({CHLD}), a soil and foodstuff pollutant, as well as an environmentally persistent organochlorine insecticide, was used intensively in banana fields. {T}he chlordecone uptake of three crops was measured for two types of polluted soils: allophanic and non-allophanic. {T}he uptake is lower for allophanic soils even if their chlordecone content is higher than with non-allophanic soils. {T}he fractal structure of the allophane aggregates was characterized at the nanoscale by small angle {X}-rays scattering, pore size distribution and transmission electron microscopy. {W}e showed that clay microstructures should be an important physico-chemical factor governing the fate of chlordecone in the environment. {A}llophanic clays result in two counterintuitive findings: higher contaminant trappings yet lower contaminant availability. {W}e propose that this specific, tortuous structure, along with its associated low accessibility, partly explains the low availability of chlordecone confined in allophanic soils. {C}apsule {T}he fractal and tortuous microstructure of allophane clay favours the chlordecone retention in soils and disfavours the crop uptake.}, keywords = {{C}hlordecone ; {A}llophanic clay ; {F}ractal microstructure ; {SAXS} ; {P}lant uptake ; {MARTINIQUE}}, booktitle = {}, journal = {{J}ournal of {H}azardous {M}aterials}, volume = {241}, numero = {}, pages = {224--230}, ISSN = {0304-3894}, year = {2012}, DOI = {10.1016/j.jhazmat.2012.09.034}, URL = {https://www.documentation.ird.fr/hor/fdi:010058848}, }