Shenzhen Polytechnic, Shenzhen 518055, China.
College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China.
Ecotoxicol Environ Saf. 2021 Sep 1;220:112375. doi: 10.1016/j.ecoenv.2021.112375. Epub 2021 May 26.
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 μg/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 < 0.05) level of Pb (in age group of 20-30 years old) and Fe (in age group of 20-40 years old) in hair than the female people. Smokers had significantly (p < 0.05) higher level of Cd (0.35 μg/g) but lower level of Zn (101.24 µg/g) than non-smokers (Cd: 0.17 μg/g; Zn: 252.63 µg/g). Hg and Pb contents in hair of Shenzhen people were positively related with the frequencies of seafood consumption and the age, respectively. Moreover, residents lived in private buildings (well decorated house) accumulated significantly higher (p < 0.05) levels of Pb, Cr, Fe and Ni as compared with those lived in public rental house and village house (no decoration or simple decoration), suggesting that decoration material was also an important way for human exposure to heavy metals.
采集了 129 名深圳居民的头发样本，检测了汞、砷、铅、镉、铬、铜、锰、锌、铁和镍的金属/类金属浓度。同时，分析了人体头发中金属/类金属含量与性别、年龄、海鲜饮食习惯、吸烟习惯以及住房类型（居住环境）之间的关系。结果表明，深圳居民头发中汞、砷、铅、镉、铬、铜、锰、锌、铁和镍的平均含量分别为 0.76 ± 0.96μg/g、0.10 ± 0.04μg/g、5.25 ± 4.88μg/g、0.25 ± 0.33μg/g、0.60 ± 0.31μg/g、13.84 ± 3.67μg/g、2.82 ± 2.01μg/g、196.90 ± 145.01μg/g、12.20 ± 5.10μg/g 和 0.34 ± 0.32μg/g。与国内外其他地区相比，深圳居民的大多数金属/类金属处于中等水平，高毒性元素（即铅、镉、砷和汞）未超过中国正常值上限。统计分析表明，年轻男性的头发中铅（20-30 岁年龄组）和铁（20-40 岁年龄组）含量明显高于女性（p<0.05）。吸烟者头发中的镉（0.35μg/g）含量明显高于（p<0.05）不吸烟者（0.17μg/g），锌（252.63μg/g）含量明显低于（p<0.05）不吸烟者（101.24μg/g）。深圳居民头发中的汞和铅含量与海鲜食用频率和年龄呈正相关。此外，居住在私人建筑（装修较好的房屋）的居民体内的铅、铬、铁和镍含量明显高于居住在公租房和村屋（无装修或简单装修）的居民，表明装修材料也是人体接触重金属的重要途径。
