摘要
差分吸收光谱法(DOAS)是利用气体在紫外可见光波段对光具有选择吸收的特性来测量气体浓度的一种方法。DOAS法连续监测系统的核心是软件部分,由于吸收谱线漂移现象的存在,光谱解析算法的改进对污染气体浓度的计算带来很大的影响。基于DOAS法研究监测排放烟气浓度时谱线漂移对浓度计算的影响,并提出将相关函数和相关系数结合参与浓度计算,实验的结果表明,可以有效地减小谱线漂移时浓度计算的误差。
Differential optical absorption spectroscopy(DOAS) is the method for measuring the gaseous contamination component concentration by the characteristic of selective absorption for light in the UV-VIS region.The hardcore of DOAS method continuous monitoring system is software part,with the phenomena of absorption spectral shift,the improvement of spectral resolving method effects greatly the concentrate calculation of gaseous contamination.It is studied the effect of the DOSA spectral shift on the concentrate calculation in CEMS,and it is also proposed the integration of correlation function with correlation coefficient for the calculation.The test results show that the method could effectively decrease the error of concentrate calculation while the spectral shifting.
出处
《环境工程》
CAS
CSCD
北大核心
2008年第S1期310-314,共5页
Environmental Engineering
基金
教育部博士学科点专项科研基金项目(20060252003)
上海市教委基金(05EZ11)
