| 南丹矿业活动影响区人群头发中重金属含量特征 |
| 摘要点击 1279 全文点击 1039 投稿时间：2016-04-26 修订日期：2016-07-04 |
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| 中文关键词 人发 重金属 年龄 性别 矿业活动 南丹 |
| 英文关键词 hair heavy metal age gender mining activity Nandan County |
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| 中文摘要 |
| 为探讨矿业活动对“有色金属之乡”南丹矿区周边常住居民健康的影响，采集矿业活动影响区车河镇、大厂镇、长老乡及对照区六寨镇中典型村庄居民发样200个，用原子荧光形态分析仪（AFS-9700）、石墨炉原子吸收分光光谱仪（AA 700）和电感耦合等离子发射光谱仪（Optima 7000）测试其重金属含量. 结果表明，受影响区人群发样中As、Sb、Cd和Pb的平均含量分别为1.260、2.161、2.466和20.92 μg·g-1，分别是对照区的4.0、20、2.1和1.9倍，且车河、大厂人群发样中Sb含量超出推荐正常范围；受影响区人群发样中Zn含量与居民年龄呈负相关（P<0.05，n=151），Cd和Pb含量与居民年龄呈弱负相关（P<0.1，n=151）；通过独立样本t检验，受影响区男性居民发样中Cd含量显著高于女性（P<0.05），而女性居民发样中Cu和Zn含量显著高于男性（P<0.05）. 调查区域人群发样中As与Sb、Cd与Pb、As与Cd呈显著相关性（P<0.01）. 可见，南丹矿业活动对周边常住人群人发重金属积累效应明显. |
| 英文摘要 |
| Nandan county is usually called "land of nonferrous metals". In order to discuss the impact of mining activities on the health of inhabitants in Nandan county, 200 human hair samples were collected from 4 villages (Liuzhai is a uncontaminated contrast areas, Chehe, Dachang and Zhanglao are contaminated areas) of Nandan and analyzed for contents of As, Sb, Cd, Pb, Cu and Zn. The results showed that the average contents of As, Sb, Cd and Pb were 1.260, 2.161, 2.466 and 20.92 μg·g-1 in the human hair samples from contaminated areas. They were 4.0, 20, 2.1 and 1.9 times higher than those in the contrast areas, and the Sb contents in human hair of Chehe and Dachang were higher than the recommended normal range. The contents of human hair Zn showed a negative correlation with the age of people (P<0.05), and contents of human hair Cd and Pb showed a weak negative correlation with the age of people in contaminated areas (P<0.1). The independent-samples t-test showed that Cd contents in male hair were apparently higher than those in female hair (P<0.05), however, Cu and Zn contents in female hair were apparently higher than those in male hair (P<0.05), in the contaminated areas. There were positive correlations between As and Sb, Cd and Pb, as well as As and Cd (P<0.01), while other elements showed no significant correlation between pairs. It was therefore concluded that contamination from the mining activities has exposed a serious threat to human health in the mine contaminated areas in Nandan county. |
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