Chemical Composition and Possible Sources of Elements in Dustfall in Pingdingshan City

2010 4th International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2010-06-18 DOI:10.1109/ICBBE.2010.5516593

Zhangxian Liu, Yan Zhang, Lianshan Li, R. Guo, K. Huang

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引用次数: 1

Abstract

Dustfall samples were synchronously collected at five typical urban functional areas (industrial area, traffic area, residential area, cultural and educational area, residential and commercial mixed area) of Pingdingshan City in Henan Province from May 2008 to April 2009. The principal component elements in dustfall samples were analyzed for concentrations, spatial distribution, sources and contributions to air pollution. The results indicated that Cd, Pb, As, Zn, S and Cu were the dominant polluted elements in the dustfall and their enrichment factors were 44.1, 15.0, 7.8, 3.4, 3.4 and 4.4, respectively. The major ionic species in dustfall were Ca2+, SO42-, Cl-, K+, Na+, F- and NO2-, and their concentrations were 2112, 825, 193, 177, 136, 136 and 130µgg-1, respectively. The industrial dust and surface soil dust, coal burning dust and constructing dust, motor vehicle emission and metal smelting dust, oil burning and waste incineration should be the dominant sources of dustfull and their contribution were 38.68%, 25.78%, 19.57%, 10.98%, respectively. Therefore, it obviously indicated that the atmospheric dust full was the multi-source pollution in Pingdingshan.

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平顶山市降尘中元素的化学组成及可能来源

2008年5月至2009年4月，在河南省平顶山市5个典型城市功能区(工业区、交通区、居住区、文教区、商住混合区)同步采集降尘样本。分析了降尘样品中主成分元素的浓度、空间分布、来源和对大气污染的贡献。结果表明，Cd、Pb、As、Zn、S和Cu是主要污染元素，富集系数分别为44.1、15.0、7.8、3.4、3.4和4.4。降尘离子主要为Ca2+、SO42-、Cl-、K+、Na+、F-和NO2-，浓度分别为2112、825、193、177、136、136和130µgg-1。工业扬尘和地表土壤扬尘、燃煤扬尘和建筑扬尘、机动车排放扬尘和金属冶炼扬尘、燃油燃烧扬尘和垃圾焚烧扬尘是主要的扬尘来源，贡献率分别为38.68%、25.78%、19.57%和10.98%。由此可见，平顶山大气粉尘是多源污染。

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2010 4th International Conference on Bioinformatics and Biomedical Engineering

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