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正定矩阵因子分解和非负约束因子分析用于大辽河沉积物中多环芳烃源解析的比较研究

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Indexed by:期刊论文

Date of Publication:2009-01-01

Journal:科学通报

Included Journals:PKU、ISTIC、CSCD

Volume:54

Issue:24

Page Number:3817-3822

ISSN No.:0023-074X

Key Words:多环芳烃; 源解析; 正定矩阵因子分解; 非负约束因子分析

Abstract:正定矩阵因子分解(PMF)和非负约束因子分析(FA-NNC)是用于污染物源解析的两种较为先进的方法.本研究将PMF和FA-NNC成功用于中国大辽
   河流域沉积物中多环芳烃(PAHs)的来源解析,并比较两个模型得到的来源类型与贡献.两种模型对于多环芳烃来源的判定有一致的结果,分别是燃煤、生物质
   燃烧、交通和炼焦,PMF得到4个源的贡献率依次是43.3%,24.3%,16.7%,15.7%;与之对应,FA-NNC得到的贡献率为50.4%,
   21.9%,15.7%,12.0%.PMF和FA-NNC对多环芳烃主要来源的判定结果与比值法、排放清单的结果基本一致,且与辽宁省能源结构相符.

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