[1] [1] Wei B G, Yang L S. Microchemical Journal, 2010, 94(2): 99.

[2] [2] Raghunath R, Tripathi R M, Kumar A V, et al. Environmental Research, 1999, 80(3): 215.

[3] [3] Ministry of Enviroment Protection of the People’s Republic of China. 2004, HJ/T 166—2004.

[4] [4] QIAN Yuan-luo, ZHAO Chun-jiang, LU An-xiang, et al. Farm Machinery, 2011,(8): 137.

[5] [5] LI Bing, ZHOU Jian-xiong, ZHAN Xiu-chun. Acta Geologica Sinica, 2011, 85(11): 1878.

[6] [6] QIAN Jian-ping, WU Gao-hai, CHEN Hong-yi. Geophysical and Geochemical Exploration, 2010, 34(4): 497.

[7] [7] Lu An-xiang, WANG Ji-hua, PAN Li-gang, et al. Spectroscopy and Spectral Analysis, 2010, 30(10): 2848.

[8] [8] WANG Shu-qiu. Mining and Metallurgy, 1995, 4(2): 106.

[9] [9] QI Chang-wei, ZHU Jie-yong, WANG Jia-yin, et al. Geology and Resources, 2013, 22(1): 64.

[10] [10] China State Bureau of Quality and Technical Supervision. 1995, GB15618—1995.

[11] [11] WANG Li-qian, XIANG Feng. Environmental Science Survey, 2012, 31(5): 97.

[12] [12] GU Cheng-yan, LIU Jian-dong, XUE Huai-you. Morden Mining, 2013,(9): 181.

[13] [13] CHEN Yuan, ZHANG Jie, ZHUANG Yuan. Environmental Science and Management, 2013, 38(3): 121.

[14] [14] ZHANG Si-chong, ZHOU Xiao-cong, YE Hua-xiang, et al. Chinese Agricultural Science Bulletin, 2009, 25(13): 230.