Journal of Encapsulation and Adsorption Sciences, 2014, 4, 80-88 Published Online September 2014 in SciRes. http://www.scirp.org/journal/jeas http://dx.doi.org/10.4236/jeas.2014.43009 Heavy Metals Contamination in Greenhouse Soils and Vegetables in Guanzhong, China Ling Liu1,2*, Jinyin Lu2, Zhenwen Zhang1, Hai Zheng3, Xiaoqing Gao1, Wei Zhang2 1Shaanxi Provincial Academy of Environmental Sciences, Xi’an, China 2College of Life Science, Northwest A & F University, Yangling, China 3Environmental Protection Department of the Northwest Environmental Protection Supervision Center, Xi’an, China Email: *
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[email protected] Received 30 June 2014; revised 25 July 2014; accepted 22 August 2014 Copyright © 2014 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract This study used a flame atomic absorption spectrometer (FAAS) and atomic fluorescence spec- trophotometer (AFS) to detect the concentrations of chromium (Cr), cadmium (Cd), lead (Pb), hy- drargyrum (Hg) and arsenic (As) in soils and three genotypes of vegetables in greenhouse, as well as analyzed the physical and chemical properties of soils, including soil pH, soil organic matter (OM), basic nutrients, electrical conductivity (EC) and cation exchange capacity (CEC) in Guan- zhong areas, Shaanxi province, China. The results showed that comparing to subsoil, the sampled topsoil is enriched in Cr, Cd, Pb, As and Hg. Cd (0.83 - 3.17 mg∙kg−1) and Hg (0.40 - 1.44 mg∙kg−1) are exceeding the limited value stated in “the 2006 Greenhouse Vegetable Producing Environ- mental Quality Evaluation Standards” of 0.40 mg∙kg−1 and 0.35 mg∙kg−1 respectively.