摘要
在大气颗粒物源解析技术领域中,扬尘以及相关的概念比较混乱。深入分析了城市中扬尘形成的机理,对城市扬尘、城市扬尘源类、城市扬尘源的物质、城市扬尘样品的采集方法等问题进行了新的诠释。在此基础上,对城市扬尘及源类的基本特征进行了理论高度上的概括,其中城市扬尘具有二重性特征的理论为"二重源解析"技术的产生提供了科学依据。还提出了二重源解析模型的数学表达式并且还提出了一种二重源解析误差的估算方法。用二重源解析模型计算了某市PM10的贡献值和分担率以及和化学质量平衡受体模型(CMB)计算结果的误差。
There is some confusion to the urban raised dust and related conception in the field of atmospheric particular matter source apportioning.The conception of urban raised dust was brought up based on its formation mechanism and urban raised dust,its source,its source's matter were new defined,and the sample gathering method was discussed.The basic character of urban raised dust and its source was summarized theoretically in this article.The theory that urban raised dust was of dual character provided scientific basis for the 'double source apportioning'model.Then,at the first time,a mathematic equation was put forward for the double source apportioning model and a method of error estimating for the double source apportioning was set forth.At last,the contribution and portion of PM10 in a city was calculated with the model and the error was given comparatively with CMB model.
出处
《城市环境与城市生态》
CAS
CSCD
2007年第4期31-33,41,共4页
Urban Environment & Urban Ecology
关键词
大气颗粒物
颗粒物源解析
城市扬尘
二重源解析
误差估算
atmospheric particulate matter
particulate source apportion
urban raised dust
double source apportion
error estimating
