摘要
在实验室内模拟测量了实际大气中污染气体的差分吸收光谱 (DOAS) .本文在介绍差分吸收光谱技术同时 ,分析计算了污染气体的浓度 .实验设计中被测气体为大气中的 2种主要污染气体 :工业锅炉的主要排放物SO2 和机动车尾气的主要成分NO .用氘灯作为光源测量其在紫外波段的特征吸收 ,并通过光纤束连接光栅光谱仪 ,由计算机自动采集和处理数据 .
The differential optical absorption spectrometry (DOAS) for atmospheric pollutant monitoring is simulated in laboratory. And the concentration of pollutants is analyzed and calculated. The method of DOAS is used to measure the concentrations of SO 2 and NO in laboratory. The UV light from deuterium lamp is absorbed by pollutant gas and then transmitted to the grating spectrometer which is connected to computer. And the experimental data is collected and processed automatically.
出处
《物理实验》
北大核心
2004年第8期8-11,共4页
Physics Experimentation
关键词
光学差分吸收光谱
气体浓度
特征吸收
DOAS
concentration of pollutants
characteristic absorption
