中文摘要：

为应用差分吸收光谱法（DOAS）技术于火电厂等固定污染源的排放监测，需要研究温度等因素对SO2污染气体紫外差分吸收特性的影响。对S02在其紫外280-320nm差分特征波段，温度从30-400℃差分吸收特性进行的实验研究表明，温度升高使得差分光谱峰值减小峰谷值上升，210℃与390℃相对于30℃的差分吸收计算浓度相对误差为-40％和-70％左右，但整个差分结构吸收频率没有发生变化。

英文摘要：

For applying Differential Optical Absorption Spectroscopy （DOAS） technique to Continuous Emission Monitoring Systems （CEMS） such as in power plant, it is necessary to study the temperature effect on SO2 differential absorption characteristics in UV band. Temperature effects from 30-400℃ on SO2 differential absorption properties in UV band from 280-320 nm are experimentally studied. The results show that the differential absorption properties change dramatically with temperature. The differential absorbance peaks decrease with increase of temperature while the valleys will increase. The differential absorption cross-section peak value relative change 210℃ and 390℃ to 30℃ will reach approximately -40% and -70%. But no qualitative absorption frequency change is observed.