基于非分散红外光谱吸收法的SO_2检测系统研究  

Sulfur Dioxide Measurement System Based on Non-dispersive Infrared Gas Analysis Technique

作　　者：黄书华[1] 孙友文[1] 刘文清[1] 汪世美[1] 谢品华[1] 司福祺[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室,安徽合肥230031

出　　处：《红外》2011年第12期10-13,共4页Infrared

基　　金：国家高新技术研究863重大课题项目(2009AA063006);国家自然科学基金项目(40805015);安徽省优秀青年科技基金项目(10040606Y28)

摘　　要：对非分散红外SO_2气体检测技术及其运行机理作了系统介绍。分析了非分散红外SO_2气体检测的吸光度获取方案及浓度反演方法。以三阶多项式为拟合模型,采用非线性最小二乘法获得了系统的定标曲线。对系统的测量准确度进行了相关分析,得出测量误差<2%。结果表明,利用非分散红外光谱吸收法能够实现对SO_2气体的准确测量,可为其它气体的测量提供相似的解决方案。The non-dispersive infrared gas analysis technique and its application in sulfur dioxide measurement are presented. The absorbance acquisition and concentration retrieval in non-dispersion sulfur dioxide analysis are analyzed. By taking the third-order polynomial as a fitting model, the calibration curve is obtained with the nonlinear least-square. The measurement accuracy of the system is analyzed and the measurement error less than 2 % is derived. The result shows that the non-dispersive infrared technique can measure the sulfur dioxide accurately and it can also be used in the analysis of other gases.

关 键 词：红外技术 非分散红外 气体检测 二氧化硫 

分 类 号：X831[环境科学与工程—环境工程]