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Geochemistry of rare earth elements in Permian coals from the Huaibei Coalfield, ChinaLiugen Zheng; Guijian Liu; Chen-Lin Chou; Cuicui Qi; Ying Zhang · 2007
The use of sequential extraction to determine the distribution and modes of occurrence of mercury in Permian Huaibei coal, Anhui Province, ChinaLiugen Zheng; Guijian Liu; Cuicui Qi; Ying Zhang; Minghong Wong · 2008
Distribution and mode of occurrence of As, Hg and Se and Sulfur in coal Seam 3 of the Shanxi Formation,Yanzhou Coalfield, ChinaGuijian Liu; Liugen Zheng; Ying Zhang; Cuicui Qi; Yiwei Chen; Zicheng Peng · 2007
Comparative on Causes and Accumulation of Selenium in the Tree-rings Ambient High-selenium Coal Combustion Area from Yutangba, Hubei, ChinaGuijian Liu; Ying Zhang; Cuicui Qi; Liugen Zheng; Yiwei Chen; Zicheng Peng · 2007