黑碳仪测量气溶胶吸收系数的校正算法和影响因素研究进展

黑碳仪作为常用的吸收系数测量方法之一，广泛应用于气溶胶光吸收特性的实验室和外场观测研究.然而，受测量方法的限制，吸收系数测量的准确性受到颗粒物负载效应，以及滤膜和颗粒物的多重散射效应的影响.本文综述了黑碳仪的测量原理及现有校正算法，探究了其吸收系数测量的影响因素，分析了黑碳气溶胶的混合状态对其吸收系数测量偏差（C_ref’）的影响，探讨了C_ref’与气溶胶单次散射反照率（SSA）的关系以及C_ref’的波长依赖关系，并提出了今后相关研究的建议.

Research progress of correction algorithm and influence factors for aerosol absorption coefficient from aethalometer measurement

As one of the commonly used techniques for aerosol absorption coefficient measurement, Aethalometer is widely used to investigate aerosol light absorption properties in laboratory and field experiments. However, owing to the constraint of filter-based method, the accuracy of the absorption coefficient measurement is affected by the filter-loading effect, and by the multiple-scattering effects caused by the filter fibers and aerosol particles. The instrument methodology and the developed correction algorithms of Aethalometer were reviewed. The influence factors for absorption coefficient measurement were explored. The influence of mixing state of black carbon (BC) on Aethalometer measurement deviation (C_ref') of absorption coefficient were analyzed. The relationship between C_ref' and aerosol single scattering albedo (SSA), and the wavelength-dependent relationship of C_ref' were discussed. Furthermore, some suggestions for the future research were proposed.