@article{fdi:010025443, title = {{O}xide weathering and trace metal release by bacterial reduction in a {N}ew {C}aledonia {F}erralsol}, author = {{Q}uantin, {C}. and {B}ecquer, {T}hierry and {R}ouiller, {J}.{H}. and {B}erthelin, {J}.}, editor = {}, language = {{ENG}}, abstract = {{B}acterial reduction of {F}e- and {M}n-oxides was studied in a surface horizon of a {N}ew {C}aledonian {F}erralsol in batch experiments. {T}wo treatments were imposed containing different sources of organic matter (soil organic matter with or without glucose addition) to link organic matter biodegradation with reduction process. {T}he concomitant solubilization of {N}i and {C}o was also studied. {R}esults showed that anaerobic {F}e- and {M}n-reducing bacterial activity was responsible for {F}e- and {M}n-oxide solubilization by anaerobic respiration or fermentation. {W}hen {C} was more available, oxide reduction was enhanced. {M}n-oxide appeared as the major reducible phase and metal source rather than goethite. {C}o and {N}i were solubilized with {F}e and {M}n but their amounts in solution decreased at the end of experiment. {T}he bioavailability of heavy metals in this soil was increased by biological reduction but was limited by adsorption or precipitation phenomena. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{DEGRADATION} {DU} {SOL} ; {ALTERATION} ; {METAL} {LOURD} ; {ELEMENT} {EN} {TRACE} ; {NICKEL} ; {COBALT} ; {OXYDE} ; {FER} ; {MANGANESE} ; {REDUCTION} {CHIMIQUE} ; {BACTERIE} ; {MATIERE} {ORGANIQUE} ; {CARBONE} {ORGANIQUE} ; {MINERALISATION} ; {ETUDE} {EXPERIMENTALE} ; {NOUVELLE} {CALEDONIE} ; {OUENAROU}}, booktitle = {}, journal = {{B}iogeochemistry}, volume = {53}, numero = {}, pages = {323--340}, ISSN = {0168-2563}, year = {2001}, DOI = {10.1023/{A}:1010680531328}, URL = {https://www.documentation.ird.fr/hor/fdi:010025443}, }