4.5 Article

Chemical speciation of fine particle bound trace metals

出版社

SPRINGER
DOI: 10.1007/BF03326071

关键词

Bioavailability; Fine particle; Health risk assessment; Sequential extraction procedure; Trace element

资金

  1. National Science Foundation of China [40730741]
  2. open foundation of State Key Laboratory of Environmental Geochemistry of China and the Science and Technology Program of Guangdong Province [2004A30308002, 2004B20501006]
  3. State Scholarship Fund of China Scholarship Council [2007U33019]

向作者/读者索取更多资源

This study reported quantifications of fine particle bound trace metals and their potential health risks for residents in Guangzhou, a rapidly developing and most populated city in South China. The fine particle samples were collected from October 29(th). to November 8(th). of 2006 at two different elevations in a mainly residential area and analyzed for the total concentration of aluminum, iron, zinc, lead, manganese, copper, arsenic, chromium, nickel, cadmium, molybdenum and cobalt. Results showed that the fine particle concentrations ranged from 95.8 mu g/m(3) to 194.7 mu g/m(3) at the ground and 83.3-190.0 mu g/m(3) on the roof, which were much higher than the 24 h fine \particle standard (35 mu g/m(3)) recommended by USEPA. The total concentrations of zinc, lead, arsenic, chromium and cadmium in fine particle were 504.8, 201.6, 24.3, 7.7 and 4.4 ng/m(3), respectively, which were comparable to other major cities of China, but much higher than major cities outside of China. A sequential extraction procedure was used to fractionate these fine particle bound metals into four different fractions. Results indicated that most toxic metals were mainly distributed in bioavailable fractions. For instance, about 91% of cadmium, 85% of lead and 74% of arsenic were in bioavailable forms. Risk calculations with a simple exposure assessment model showed that the cancer risks of the bioavailable fractions of arsenic, chromium and cadmium were 3 to 33 times greater than usual goal, indicating serious health risks to the residents in this urban area.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据