【摘要】 选取了成都市10个具有典型代表性的企业工厂作为源样品采集点,通过聚类分析研究了源样品的组分特征,并且对不同源类PM2.5样品成分特征以及各源类不同粒径源样品成分特征进行对比分析.结果表明,本次采集的源样品可分为4类源.地质源类的特征元素为Si、Al、OC,质量百分数分别为(12.54±0.93)%、(5.36±10.19)%、(10.50±0.92)%;金属1类源的特征元素为Al、Si、Ca、OC,质量百分数分别为(5.20±0.31)%、(12.52±1.09)%、(1.58±1.47)%、(14.48±3.90)%;金属2类源的特征元素为Si、Fe,质量百分数分别为9.45%、2.31%;化工源类的特征元素为K、Ca、OC,质量百分数分别为(1.44±1.16)%、(3.54±4.66)%、(8.50±8.31)%.更多还原

【Abstract】 10 Factories with typical representativeness in Chengdu were selected as the source sampling sites,which were divided into four types of sources through clustering analysis.The composition characteristics of PM2.5samples and source samples in different particle size of different sources have been analyzed with comparison.The characteristic elements of the geological dust source are Si,Al and OC,whose quality percentages are(12.54±0.93)%,(5.36±10.19)%and(10.50±0.92)%,respectively.The characteristic elements of the metalⅠdust source are Al,Si,Ca and OC,whose quality percentages are(5.20±0.31)%,(12.52±1.09)%,(1.58±1.47)% and(14.48±3.90)%,respectively.The characteristic elements of the metalⅡdust source are Si and Fe,whose quality percentages are 9.45% and 2.31% respectively.The characteristic elements of the chemical dust source are K,Ca and OC,whose quality percentages are(1.44±1.16)%,(3.54±4.66)% and(8.50±8.31)%,respectively.更多还原