@article{fdi:010073750, title = {{T}he pesticide chlordecone is trapped in the tortuous mesoporosity of allophane clays}, author = {{W}oignier, {T}. and {C}lostre, {F}. and {F}ernandes, {P}. and {S}oler, {A}. and {R}angon, {L}uc and {S}astre-{C}onde, {M}. {I}. and {J}annoyer, {M}. {L}.}, editor = {}, language = {{ENG}}, abstract = {{S}ome volcanic soils like andosols contain short-range order nanoclays (allophane) which build aggregates with a tortuous and fractal microstructure. {T}he aim of the work was to study the influence of the microstructure and mesoporosity of the allophane aggregates on the pesticide chlordecone retention in soils. {O}ur study shows that the allophane microstructure favors pollutants accumulation and sequestration in soils. {W}e put forth the importance of the mesoporous microstructure of the allophane aggregates for pollutant trapping in andosols. {W}e show that the soil contamination increases with the allophane content but also with the mesopore volume, the tortuosity, and the size of the fractal aggregate. {M}oreover, the pore structure of the allophane aggregates at nanoscale favors the pesticide retention. {T}he fractal and tortuous aggregates of nanoparticles play the role of nanolabyrinths. {I}t is suggested that chlordecone storage in allophanic soils could be the result of the low transport properties (permeability and diffusion) in the allophane aggregates. {T}he poor accessibility to the pesticide trapped in the mesopore of allophane aggregates could explain the lower pollutant release in the environment.}, keywords = {{C}hlordecone ; {S}oil contamination ; {A}llophane ; {M}esoporosity ; {T}ortuosity ; {F}ractal microstructure ; {MARTINIQUE}}, booktitle = {}, journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch}, volume = {25}, numero = {22}, pages = {21350--21361}, ISSN = {0944-1344}, year = {2018}, DOI = {10.1007/s11356-017-9370-1}, URL = {https://www.documentation.ird.fr/hor/fdi:010073750}, }