6Mingzhe Zhai,Otlogetswe Totolo,Motsoptse P. Modisi,Robert B. Finkelman,Sebueng M. Kelesitse,Mooketsi Menyatso.Heavy metal distribution in soils near Palapye, Botswana: an evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region[J].Environmental Geochemistry and Health.2009(6)
7Judith D. Silva,S. Srinivasalu,P. D. Roy,M. P. Jonathan.Environmental conditions inferred from multi-element concentrations in sediments off Cauvery delta, Southeast India[J].Environmental Earth Sciences.2014(5)
8S.T. Casper,A. Mehra,M.E. Farago,R.A. Gill.Contamination of Surface Soils, River Water and Sediments by Trace Metals from Copper Processing Industry in the Churnet River Valley, Staffordshire, UK[J].Environmental Geochemistry and Health.2004(1)
9T.M. Nieminen,L. Ukonmaanaho,W. Shotyk.Enrichment of Cu, Ni, Zn, Pb and As in an ombrotrophic peat bog near a Cu-Ni smelter in Southwest Finland[J].Science of the Total Environment.2002(1)