Utilization of modified BCR procedure for the chemical speciation of heavy metals in Chinese soil reference material
ZHANG Chaoyang, PENG Pingan, SONG Jianzhong, LIU Chenshuai, PENG Jue, LU Puxiang
Ecology and Environment . 2012, (11): 1881 -1884 .  DOI: 10.16258/j.cnki.1674-5906(2012)11-1881-04

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