@article{fdi:010071557,
  title = {{N}atural nano materials trapp pollutants in soils},
  author = {{W}oignier, {T}. and {C}lostre, {F}. and {R}angon, {L}uc and {L}esueur {J}annoyer, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}ersistent pesticides led to long term pollution of soils and consequently contaminate rivers, groundwater, ecosystems and finally human beings. {V}olcanic soils (andosols) are generally more polluted than the other kinds of tropical soils but data show that andosols release less pesticides to percolating water and crops. {A}ndosols contain amorphous clays (allophane) which present unique structures and physical properties compared to crystalline clays. {A}llophane aggregates have physical features very close to that of nano porous materials like synthetic gels: large pore volume and water content, a broad pore size distribution, a high specific surface area and a fractal structure. {T}he aim of the study was to show the influence of the features (nano materials structure, shrinkage during drying) of these natural gels on the pesticide retention. {O}ur study confirms that the soil to crop pesticide transfer is lower in andosols compared to other volcanic soils. {A}ssociated to high organic matter content, the allophane microstructure favor pollutants (chlordecone) accumulation in soils. {W}e put forth the importance of the nano porous features of allophane (the associated tortuous microstructure) but also the pore collapse during drying, for pollutant trapping in soils.},
  keywords = {{CONSERVATION} {DU} {SOL} ; {POLLUTION} {CHIMIQUE} ; {PESTICIDE} ; {POROSITE} ; {ANTILLES} ; {MARTINIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {E}nergy and {E}nvironment},
  volume = {11},
  numero = {art. no a522},
  pages = {160--167},
  ISSN = {2308-1007},
  year = {2017},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071557},
}