Open AccessChromium speciation in mildly heated Cr(VI)‐doped latosol soil
Author(s) -
Wei YuLing,
Hsieh HuiFang,
Peng YenShiun,
Chen KaiWen,
Lin ChangYuan,
Wang H. Paul
Publication year - 2010
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049509051243
Subject(s) - latosol , chromium , chemistry , soil water , nuclear chemistry , environmental chemistry , organic matter , inorganic chemistry , soil science , geology , organic chemistry
Cr(VI) chemical reduction in natural organic matter (NOM)‐bearing latosol soil was investigated under various heating conditions at ≤378 K. An enhanced Cr(VI) reduction rate has been observed for the reaction at 353–378 K. The effect of Fe(II) naturally occurring in the latosol soil on Cr(VI) chemical reduction is negligible compared with the effect of NOM. Cr(OH) 3 was quantitatively specified by X‐ray absorption spectroscopy to be the key chromium species (∼80%) after ∼90% of Cr(VI) was chemically reduced by NOM at 353–378 K. This study indicates a potential strategy for using the heat extracted from industrial flue gas with a heat exchanger to chemically reduce Cr(VI) in NOM‐bearing or organics‐amended soils that contain Cr(VI).