对热光反射法测量黑碳的误差校正  

A non-negligible bias of the thermaloptical reflectance method in carbon measurement and its correction

作　　者：穆燕[1] 秦小光[1] 

机构地区：[1]中国科学院地质与地球物理研究所新生代地质与环境重点实验室,北京100029

出　　处：《兰州大学学报（自然科学版）》2015年第1期44-49,共6页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金项目(41172158;40472094;40024202);国家重点基础研究发展计划(973计划)(2010CB950200);中国科学院战略重点研究项目(XDA05120502);中国科学院知识创新工程项目(KZCX2-YW-Q1-03)

摘　　要：通过对3种不同类型样品的黑碳测量,获取热光反射法测量黑碳时的误差校正方法,得到3点结论:截距的产生可能和仪器有关,但不是系统误差,和样品特性有关,与样品量无关;对气溶胶样品来说,所测碳含量与样品量有很好的线性相关关系,截距产生的误差对结果的影响不容忽视,采用不同样品量求结果与样品量线性相关直线斜率的方式获得黑碳是有必要的;截距产生的误差对样品中黑碳含量的测量有影响,但不影响其在序列上的变化趋势.Three different type samples were chosen to measure the BC content by the TOR method and the conclusions were that the the intercept of regression line between the BC content and the sample mass might be relative with the instrument and the sample characteristics. Any systematic error that occourred had no nothing to do with the sample mass; for aerosol samples, there were good relationships between the BC content and the sample mass. The error caused by the intercept could not be neglected. So it was necessary to use the slope of regression line between the BC content and the sample mass as the BC content result and the intercept might influence the BC results;it did not affect the trend in the sequence.

关 键 词：热光反射法 气溶胶 黑碳 有机碳 

分 类 号：P69[天文地球—地质学] P40