The research of non-standard test method in soil heavy metal by X-Ray fluorescence pectrometry
TAN Heping，GAO Yang, LV Hao, ZHANG Yulan, SUN Yujie
Ecology and Environment . 2012, (4): 760 -763 .  DOI: 10.16258/j.cnki.1674-5906(2012)04-0760-04

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