摘要
目的了解潍坊市大气PM10污染状况及其中Pb、Cu、Ni、Mn、Cr、Cd等重金属含量,为该市大气颗粒物污染防控提供基础资料。方法 2010年12月至2011年12月,在潍坊市不同功能区布点,用TH-1000C II型大流量采样器和聚四氟乙烯(Teflon)滤膜采样,以重量法测定大气PM10质量浓度,原子吸收法测定大气PM10中Pb、Cu、Ni、Mn、Cr、Cd的含量。结果春、夏、秋、冬季大气PM10的最大浓度分别为164.56、154.56、165.16和176.21μg/m3,平均浓度分别为99.19、87.31、92.39和112.75μg/m3,以混合区和工业区大气PM10污染浓度较高。大气PM10中Pb、Cu、Ni、Mn、Cr、Cd的最大值分别为132.19、117.81、172.25、93.51、57.89和14.67 ng/m3,均出现在冬季。结论检测期间潍坊市大气PM10质量浓度存在季节和功能区差异,表现为冬春季高于夏秋季,工业区>混合区>交通区>农业区>生活区;大气PM10中Pb、Cu、Ni、Mn、Cr、Cd最大值均出现在冬季。
Objective To investigate the concentrations of PM10 in atmosphere and Pb, Cu, Ni, Mn, Cr and Cd in PM10 in Weifang,Shandong province. Methods In the period from December 2010 to December 2011, TH-1000CII high-volume samplers and Teflon membrane filters were used for sampling air in different functional zones in Weifang. Gravimetric method was employed to measure PM10 mass concentration. The concentrations of Pb, Cu, Ni, Mn, Cr and Cd in particulate matter samples were analyzed by using the atomic absorption method. Results During the sampling period, the maximum PMIO mass concentrations in spring, summer, autumn and winter were 164.56, 154.56, 165.16 and 176.21 μg/m3, respectively, which were observed in the mixed zone and industrial zone suggesting that traffic and industrial sources may be the main contributors to PM10. The average PM10 mass concentrations in spring, summer, autumn and winter were 99.19, 87.31, 92.39 and 112.75 μg/m3, respectively. The maximum values of Pb, Cu, Ni, Mn, Cr and Cd in PM10 were 132.19, 117.81, 172.25, 93.51, 57.89 and 14.67 ng,/m3, respectively, which were observed in winter. Conclusion PM10 mass concentrations show obvious seasonal and spatial variations in Weifang, with higher levels in winter and spring and a decreasing order of PM10 mass concentration, such as industrial zone 〉 mixed zone 〉 traffic zone 〉 agricultural zone 〉 living zone. The maximum values of Pb, Cu, Ni, Mn, Cr and Cd in PM10 occurr in winter.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2013年第11期996-998,共3页
Journal of Environment and Health
基金
山东省高等学校优秀青年教师国内访问学者项目
