城区气溶胶中Zn和Pb的浓度变化和化学形态分布  

Concentration change and chemical speciation sort of Zn and Pb in aerosol

作　　者：张美秀[1] 刘屹[1] 刘宛宜[1] 张振斌[1] 张亮[1] 关锋[1] 刘淼[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130012

出　　处：《大连工业大学学报》2013年第4期255-257,共3页Journal of Dalian Polytechnic University

基　　金：科技部科技重大专项-004基金资助项目(2012ZX07202009)

摘　　要：在2011年12月至2012年10月用超大流量气溶胶采样器对长春宽城区的大气进行气溶胶采样,分析了Zn和Pb的含量和化学形态分布。研究结果表明,Zn和Pb的年平均质量浓度为0.438、0.083μg/m3,随季节的变化比较明显,均表现为冬季最高,夏季最低,这与长春地区的冬季采暖和夏季雨水充足有关;Zn的HAc可溶态和可氧化态两者所占比重大,在84.9%以上,Pb的HAc可溶态和可氧化态之和在63%以上。Zn的生物有效性比Pb高;四季中,Zn在夏季的生物有效性最高,而Pb在冬季的生物有效性最高。Atmospheric aerosol was collected with a large flow of aerosol sampler in Changchun Kuancheng District between December 2011 and October 2012 and the content and chemical forms distribution of Zn and Pb was analyzed. The results show that the annual mean concentration of Zn and Pb was 0. 438 and 0. 083μg/m^3. The concentration changes obviously with the seasons, both of which showed the highest in winter and lowest in summer. The HAc soluble and reducible of Zn has a large proportion that share more than 84.9%, the sum of the HAc soluble and reducible of Pb is more than 63 %. The bioavailability of Zn is higher than that of Pb. The highest bioavailability factor of Zn is in the summer, but Pb shows its highest bioavailability factor in winter.

关 键 词：气溶胶 锌 铅 浓度 形态分布 生物有效性 

分 类 号：X831[环境科学与工程—环境工程]