@article{fdi:010037738,
  title = {{C}ontrol of nickel availability by nickel bearing minerals in natural and anthropogenic soils},
  author = {{M}assoura, {S}. {T}. and {E}chevarria, {G}. and {B}ecquer, {T}hierry and {G}hanbaja, {J}. and {L}eclere {C}essac, {E}. and {M}orel, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he aim of this paper was i) to determine the {N}i-bearing minerals and localize {N}i in natural and contaminated {N}i-rich soils, ii) to characterize {N}i availability with isotopic exchange kinetics ({IEK}) and iii) to study its interactions with soil mineralogy and characteristics along a gradient of weathering intensity. {W}e sampled 16 soils varying from a recently exposed surface serpentinite in cold regions, to {F}erralsols (laterites) from a humid tropical climate including two highly contaminated soils ({N}i industry). {T}he minerals identified ranged from primary minerals to secondary phyllosilicates and lastly to {M}n/{F}e oxides, according to weathering intensity. {P}rimary minerals inherited from the parent materials and secondary phyllosilicates formed in low leaching conditions had concentrations of {N}i similar to the rock (0.2-0.3%). {W}hen compared to other secondary minerals, {F}e oxides displayed slight {N}i enrichment in moderate leaching conditions (0.4-0.8%) up to 10-fold enrichment in highly weathered {F}erralsols (4-6%). {F}ull characterization of the three factors of {N}i availability in soils: the intensity ({C}-{N}i), the quantity ({E}-t) and the capacity ({CF}) factors was achieved with {IEK}. {F}or most of the soils, {C}-{N}i and {E}-t varied conjointly: elevated values of these two parameters were found in soils dominated by both phyllosilicates and amorphous {F}e oxides (high exchange capacity); low values were found in soils with significant amounts of well-crystallized {F}e oxides (high retention capacity). {I}n the case of anthropogenic origin, control of soil {N}i availability also depends on the type of {N}i-bearing minerals.},
  keywords = {nickel ; soil ; speciation ; weathering ; availability ; soil contamination},
  booktitle = {},
  journal = {{G}eoderma},
  volume = {136},
  numero = {1-2},
  pages = {28--37},
  ISSN = {0016-7061},
  year = {2006},
  DOI = {10.1016/j.geoderma.2006.01.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010037738},
}