摘要
在室温条件下 ,以Xe灯为光源 ,利用SO2 的紫外吸收光谱 ,研究了SO2 的浓度随时间连续变化规律。实验中考虑了温度和充垫气体N2 对SO2 的浓度变化的影响。实验结果表明 :SO2 的浓度基本上是随时间线性变化的 ;同时 ,SO2 的浓度变化率与光照时间有关。
The SO 2 absorption spectrum is recorded using Xe lamp source under atmospheric conditions at ambient temperatures. The SO 2 concentration is retrieved to study the relation between SO 2 concentration and time. In this experiment, effects of temperature and the buffer gas N 2 are also considered. It is demonstrated that the concentration of SO 2 decreases in a linear relation to the time and the period of illumination may have effects on the rate of decrease. These results are applicable to SO 2 pollution monitoring in the atmosphere using high resolution spectrometer and differential absorption lidar.
基金
国家自然科学基金!资助项目 ( 597892 0 1)&&
