摘要
本文结合实例介绍了大气颗粒物来源解析最常用的模型－化学质量平衡（ＣＭＢ）的原理、有效方差最小二乘解法及诊断检验技术，并用ＭＰＩＮ矩阵检验了拟合元素对拟合源的灵敏度，奇异值分解法（ＳＶＤ）鉴别了共线源，得出天津市经济技术开发区（ＴＥＤＡ）的ＴＳＰ主要来源为风沙、扬尘，其次为燃煤飞灰和木灰。
In this paper, the theory of the receptor modelchemical mass balance (CMB) which is most widely used in source apportionment for air particulate matters in urban atmosphere, effective variance least squares estimated methods, and diagnostic test techniques were introduced combined with and example. The sensitivities of different fitting elements to various fitting sources were tested by normalized MPIN matrix, and singular value decomposition(SVD) was used to identify the collinear sources. Finally, it was obtained that the major source of TSP in Tianjin Economictechnical Development Area (TEDA) is wind blowing or background dust, then the coal-combustion ash and woodsmoke ash.
出处
《城市环境与城市生态》
CSSCI
CSCD
1996年第1期9-14,共6页
Urban Environment & Urban Ecology
关键词
大气
颗粒物
污染源解析
化学质量平衡
受体模型
atmospheric particulate source apportionment chemical mass balance receptor model
