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Research on Source Apportionmen of Atmospheric Particulates by Coupling the Model of CMB and PMF
Author(s): LIU Li, ZOU Chang-wu
Pages: 557-
562
Year: 2013
Issue:
5
Journal: Journal of Chengdu University Of Information Technology
Keyword: atmospheric particulate; positive matrix factorization; chemical mass balance; source apportionment; environmental science;
Abstract: 化学质量平衡法是目前应用最为广泛的大气颗粒物源解析受体模型之一.针对利用化学质量平衡法进行源解析时,需建立大量的污染源成分谱,耗财耗力,同时选择不同的污染源及特征元素拟合时易导致源解析结果不确定性的问题,结合正矩阵因子分解法模型,提出了化学质量平衡法与正矩阵因子分解法的耦合模型,利用正矩阵因子分解法模型解析出各污染源及其特征元素,确定化学质量平衡法模型拟合参数及污染源清单.对比各污染源的理论贡献量与模拟贡献量,结果表明,耦合模型拟合结果与理论值差异不大,验证了耦合模型的可行性.耦合模型缩减了化学质量平衡法模型建立污染源成分谱的工作量,提高了化学质量平衡法模型进行源解析工作的高效性、准确性.
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