大气有机碳/元素碳测量中的光学校正方法  

Optical Correction Method of the Atmosphere Organic and Elemental Carbonaceous Measurement

作　　者：丁晴[1] 刘建国[1] 陆亦怀[1] 陆钒[1] 王亚平[1] 石建国[1] 申永[1] 

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

出　　处：《中国激光》2012年第2期172-177,共6页Chinese Journal of Lasers

基　　金：国家863计划(2006AA06A302)资助课题

摘　　要：根据热光法原理,设计并实现了有机碳(OC)/元素碳(EC)测量系统。在此基础上分析了影响光学校正法准确判断OC和EC分割点的因素,对热分解过程中激光强度的温度效应进行激光补偿校正。描述了激光在滤膜中的传输特性,探讨了造成热光透射法(TOT)和热光反射法(TOR)所确定的OC和EC的分割点存在差异的原因。A measurement system has been developed for organic and elemental carbonaceous based on the thermal-optical method.The factors are analyzed which interfered the split of the organic carbon from the elemental carbon.The laser intensity correction is used to compensate the laser intensity′s fluctuation induced by the temperature′s severe changes during the thermal analysis.The radiative transfer model of transmittance and reflectance through the filter is developed,and the measurement theories of the thermal-optical transmittance and reflectance are described.The influence of different optical correction methods to the organic carbon and elemental carbon measurement results are discussed.

关 键 词：测量 热光法原理 光学校正 有机碳 元素碳 

分 类 号：X851[环境科学与工程—环境工程]