大气有机碳和元素碳测量热光透射法和热光反射法对比研究

大气有机碳(OC)和元素碳(EC)因其独特的环境、气候效应以及对人类健康的影响而成为世界各国环境科学家共同关注的热点。热光法是OC、EC公认较成熟的测量方法，根据使用的光学修正方法不同，分为热光透射法(TOT)和热光反射法(TOR)，两种方法测量原理相近，但所得测量结果相差较大。通过深入分析热光法的测量原理，研制了热光透射法和热光反射法模拟实验平台，通过对比实验发现导致二者测量结果差异的原因是TOR的激光分割点要比TOT的提前一些。

Comparison of Thermal-Optical Transmission and Thermal-Optical Reflectance Methods of Measurement of Organic and Elemental Carbon in Atmospheric Aerosol

Organic carbon (OC) and elemental carbon (EC) in atmospheric aerosols play a major role in environment, climate and human health effects. At present, thermal-optical method is acknowledged to be a more mature method for measuring the OC and EC, which can be divided into two methods, thermal-optical transmission (TOT) method and thermal-optical reflectance (TOR) by the optical correction way. Theory of the two methods is almost the same, but the measuring results are different obviously. Therefore, a thermal-optical transmission and reflection simulating experiment platform are developed by deeply understanding the theory of thermal-optical method. Through contrast experiment, it is indicated that the reason leading to the obvious difference between the two methods is that TOR laser split come more early than TOT.