Heavy Metals in the Ground Surface Dust and Agricultural Soil in Artisanal and Medium-scale Zinc Smelting Area in Northwest Guizhou Province, ChinaZ. G. Li, X. B. Feng, X. Y. Bi, G. Y. Sun, J. M. Zhu, H. B. Qin, L. H. Shang and B. MengE3S Web of Conferences, 1 (2013) 19004DOI: https://doi.org/10.1051/e3sconf/20130119004