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Metal/metalloid levels in hair of Shenzhen residents and the associated influencing factors

129 Shenzhen residents? hair samples were collected and the metal/metalloid concentrations of Hg, As, Pb, Cd, Cr, Cu, Mn, Zn, Fe and Ni were detected. Meanwhile, the relationships between metal/metalloid contents in human hair and gender, age, seafood diet habit, smoking habit, as well as the housing type (dwelling environment) were analyzed. Results showed that the average content of Hg, As, Pb, Cd, Cr, Cu, Mn, Zn, Fe and Ni in human hair of Shenzhen residents was 0.76???0.96, 0.10???0.04, 5.25???4.88, 0.25???0.33, 0.60???0.31, 13.84???3.67, 2.82???2.01, 196.90???145.01, 12.20???5.10 and 0.34???0.32??g/g, respectively. Compared with other regions at home and abroad, most metal/metalloids in Shenzhen residents were at a moderate level, and the highly toxic elements (i.e. Pb, Cd, As and Hg) didn?t exceed the upper limit of normal values in China. Statistical analysis showed that the young male people contained significantly higher (p?

» Author: Yanyan Qin, Chen Xu, Wanrong Li, Bin Jian, Binbin Wu, Minwei Chen, Hongjie Sun, Huachang Hong

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