摘要
介绍了主要的大气气溶胶中碳组分的分析方法及其优缺点。详细介绍了2种热光分析法(TOR和TOT)的工作原理和过程。对热光法和光学方法分析的重庆PM2.5中的碳数据进行了比较,结果表明,TOT方法与TOR方法所得TC(总碳)浓度基本一致,但TOT得到的OC(有机碳)浓度比偏高,EC(元素碳)浓度偏低。3种方法分析的无机碳浓度为EC(TOR)>光学方法-BC(黑碳)>EC(TOT)。
The paper briefed major measurement methods for carbon component in atmospheric aerosol, the advanta- ges and disadvantages associated with each method were examined as well. In particular, measurement principle and processes for thermo-optical analysis method, both TOR and TOT, were evaluated in detail. Besides, Thermo-opti- cal method and optical method for carbon analysis were evaluated using data for PM2. 5 in Chongqing. The results suggested that, TC （total carbon） measurement by TOT and TOR, in general, proved to be the same, while OC （or- ganic carbon） results appeared to be increase and EC results appeared to be drop both measured by TOT method. Inorganic carbon results by three methods registered as ：EC （TOR）〉 optical methods-BC （black carbon）〉 EC （TOT）.
出处
《三峡环境与生态》
2013年第A01期25-30,共6页
Environment and Ecology in the Three Gorges
关键词
碳组分
分析方法
热光法
光学法
重庆
carbonl measurement method
thermo-optical measurement
optical measurement
Chongqing
