作者: Haibo Zhang , Bianying Zhou , Jingfen Ren , Lei Zhang , Yongming Luo
DOI: 10.1007/S00128-018-2399-0
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摘要: The chromate ore process residues (COPR) polluted soil was physically separated into coarse sand (2.000-0.425 mm), fine (0.425-0.053 mm) and silt to clay (< 0.053 mm) fractions. Cr speciation characterized by synchrotron based micro X-ray fluorescence (µ-XRF) absorption near-edge spectra (µ-XANES). results indicated that bearing both in COPR parent minerals hydrated products dominated Cr(III) three size-fractions. chromite, organic matter bound particle adsorbed Cr3+ the selected hotspots from sand, sized fraction, respectively. While Cr(VI) occurred form of CrO42- size difference species size-fractions suggested higher edaphic effects than size-fraction for weathered COPR.