[1] Niu Lili, Yang Fangxing, Xu Chao, et al. Environmental Pollution, 2013, 176: 55.
[3] Brian J Alloway. Heavy Metals in Soils: Trace Metals and Metalloids in Soils and Their Bioavailability. Springer. 2012. 103.
[4] Dennis J Kalnicky, Raj Singhvi. Journal of Hazardous Materials, 2001, 83: 93.
[5] Weindorf D C, Paulette L Man, et al. Environmental Pollution, 2013, 182: 92.
[6] Hou Xiandeng, He Yihua, Bradley T. Jones. Applied Spectroscopy Reviewas, 2004, 39(1): 1.
[9] U.S. EPA. Method 6200. Field Portable X-Ray Fluorescence Spectrometry for the Determination of Element Concentrations in Soil and Sediment. 1998. 1.
[10] U.S. EPA. Environmental Technology Verification Report. Field Portable X-Ray Fluorescence Analyzer. Metorex X-MET 920-P and 940, EPA/600/R-97/146. U.S.EPA., 1998. 16.
[13] Kilbride C, Poole J, Hutchings T R. Environmental Pollution, 2006, 143: 16.