State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, P.O. Box 2871, Beijing 100085, China.
Environ Pollut. 2009 Aug-Sep;157(8-9):2445-51. doi: 10.1016/j.envpol.2009.03.010. Epub 2009 Apr 5.
Scalp hair samples were collected at an electronic waste (e-waste) recycling area and analyzed for trace elements and heavy metals. Elevated levels were found for Cu and Pb with geometric means (GMs) at 39.8 and 49.5 microg/g, and the levels of all elements were found in the rank order Pb > Cu >> Mn > Ba > Cr > Ni > Cd > As > V. Besides Cu and Pb, Cd (GM: 0.518 microg/g) was also found to be significantly higher compared to that in hair samples from control areas. Differences with age, gender, residence status and villages could be distinguished for most of the elements. The high levels of Cd, Cu and Pb were likely found to be originated from e-waste related activities, and specific sources were discussed. This study shows that human scalp hair could be a useful biomarker to assess the extent of heavy metal exposure to workers and residents in areas with intensive e-waste recycling activities.
采集了电子废物（e-waste）回收区的头皮头发样本，并对其微量元素和重金属进行了分析。结果发现 Cu 和 Pb 的含量较高，几何平均值（GM）分别为 39.8 和 49.5μg/g，所有元素的含量依次为 Pb > Cu >> Mn > Ba > Cr > Ni > Cd > As > V。除了 Cu 和 Pb 之外，Cd（GM：0.518μg/g）的含量也明显高于对照区头发样本中的含量。大多数元素的含量与年龄、性别、居住状态和村庄存在差异。高含量的 Cd、Cu 和 Pb 可能来自与电子废物相关的活动，并且讨论了具体的来源。本研究表明，人类头皮头发可以作为一种有用的生物标志物，用于评估在电子废物回收活动密集的地区工人和居民的重金属暴露程度。
