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因子分析法解析北京市大气颗粒物PM10的来源
Sources Apportionment of Atmospheric Particles PM10 in Beijing by Factor Analysis
  修订日期:2006-09-13
DOI:
中文关键词:  因子分析,源解析,大气颗粒物,PM10,北京
英文关键词:Factor analysis,Source apportionment,Atmospheric particles,PM_(10),Beijing
基金项目:
邹本东  徐子优  华蕾  韩玉朴  董淑英  鹿海峰
北京市环境监测中心 北京100044
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中文摘要:
      2004年10月份在北京市6个采样点采集了大气PM10样品,分析了大气颗粒物的质量浓度、元素组成、离子、有机碳(OC)和元素碳(EC)的浓度,并用因子分析模型对颗粒物的来源进行了研究。结果显示,北京市大气颗粒物的来源主要有6类:建筑水泥尘/机动车尾气尘/燃煤尘、土壤风沙尘、二次粒子尘、工业粉尘、生物质燃烧尘和燃油尘。用模型计算得到的各源对PM10的贡献率分别为建筑水泥尘/机动车尾气尘/燃煤尘占36.57%、土壤风沙尘占16.07%、二次粒子尘占12.33%、工业粉尘占10.29%、生物质燃烧尘占6.07%
英文摘要:
      Atmospheric particulate samples of PM_(10) were collected in the October of 2004 at six sites in Beijing.Mass concentration,elements,ions,organic carbon(OC)and elemental carbon(EC)were analyzed and the data were calculated by factor analysis model to know the contributions of various sources.The result of factor analysis showing that there are six major sources of atmospheric particles in Beijing,including construction dust/motor vehicle exhaust dust/coal combustion dust,soil dust,secondary particles dust,industry dust,biomass burning dust and burning oil dust.Source apportionment results derived from factor analysis model for PM_(10) are construction dust/motor vehicle exhaust dust/coal combustion dust 36.57%;soil dust16.07 %;secondary particles dust 12.33%;industry dust 10.29%;biomass burning dust 6.07%;burning oil dust 3.84%;other sources 14.84%.Construction dust/ motor vehicle exhaust dust/coal combustion dust,soil dust,secondary particles dust,industry dust are the four major sources.The experiment indicating that factor analysis model can be used to estimate the sources and their relative contributions when lack of source profiles.
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