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天津市颗粒物中元素化学特征及来源
引用本文:董海燕,古金霞,姜伟,白志鹏.天津市颗粒物中元素化学特征及来源[J].环境监测管理与技术,2012,24(1):25-28.
作者姓名:董海燕  古金霞  姜伟  白志鹏
作者单位:[1]天津市环境监测中心,天津300191 [2]天津城市建设学院,天津300384 [3]南开大学,天津300071
基金项目:环保公益性行业科研专项基金资助项目(200909005);天津市自然基金细粒子致霾城市能见度下降机理研究基金资助项目(11JCYBJC05200)
摘    要:2006年的8月—12月采集天津市PM2.5和PM10样品,分析了Na、Al等17种元素质量浓度及月变化特征,PM2.5中元素平均质量浓度为17.2μg/m3,占PM2.5的10.3%。微量元素Zn、Pb在PM10和PM2.5中含量较高,Cr、V、Ni、As等则在细粒子中有明显分布。用富集因子法分析发现,PM2.5中元素富集程度高于PM10。地壳元素除Ca外,均无明显富集,微量元素则呈现不同程度的富集,以Cd富集最为明显。颗粒物分析表明,土壤尘、燃煤、机动车尾气及化工行业是PM2.5中无机元素的主要来源。

关 键 词:可入肺颗粒物  可吸入颗粒物  颗粒物中元素  富集因子  天津

Character and Source Analysis of Chemical Element in Particulate Matters in Tianjin
DONG Hai-yan,GU Jin-xia,JIANG Wei,BAI Zhi-peng.Character and Source Analysis of Chemical Element in Particulate Matters in Tianjin[J].The Administration and Technique of Environmental Monitoring,2012,24(1):25-28.
Authors:DONG Hai-yan  GU Jin-xia  JIANG Wei  BAI Zhi-peng
Affiliation:1.Tianjin Environmental Monitoring Center,Tianjin 300191,China;2.Tianjin Institute of Urban Construction,Tianjin 300384,China;3.Nankai University,Tianjin 300071,China)
Abstract:A serial sampling work of PM2.5 and PM10 were made from Aug to Dec,2006 in Tianjin.Concentration and monthly changes of 17 elements such as Na,Al etc were obtained.It showed that average element concentration of PM2.5 was 17.2 μg/m3(10.3%).Trace elements such as Zn,Pb were high concentration both in PM10 and PM2.5,while Cr,V,Ni and As were existed mainly in PM2.5.Enrichment factor analysis indicated that enrichment of all elements were higher in PM2.5 than that of PM10.All crustal elements except Ca were detected as non-enrichment,whereas the trace elements all showed a character of enrichment.Cd was obviously enriched in Tianjin particulate matters.The factor analysis also showed that soil dust,coal burning,engine exhaust and chemical industry were the major sources for inorganic elements of PM2.5.
Keywords:PM2  5  PM10  Elements in particulate matters  Enrichment factor  Tianjin
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