Consistency and Traceability of Black Carbon Measurements Made by Laser-Induced Incandescence, Thermal-Optical Transmittance, and Filter-Based Photo-Absorption Techniques
Consistency and Traceability of Black Carbon Measurements Made by Laser-Induced Incandescence, Thermal-Optical Transmittance, and Filter-Based Photo-Absorption Techniques
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DOI：
10.1080/02786826.2010.533215
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发表时间：
2011-01-01
影响因子：
5.2
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中科院分区：
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在这项研究中，我们表明，黑碳（BC）的质量浓度测量不同的技术是一致的和可追溯的。首先，我们提出了13种有机化合物的挥发性通过加热的入口。这些数据被用来量化有机气溶胶对BC测量技术的干扰。白炽的耐火材料颗粒的质量（m*（ref））用于校准由单颗粒烟灰光度计（SP2）测量的BC质量，所述单颗粒烟灰光度计（SP2）使用激光诱导白炽。该标定方法受难降解有机物的影响较小，与富勒烯烟灰的标定结果吻合较好，表明标准的一致性。我们估计热解的难降解有机物的干扰BC测量与过滤器为基础的吸收光度计连续烟尘监测系统（COSMOS）与加热入口在亚洲是小的。通过COSMOS（M-COSMOS）测量的BC质量浓度与热光透射率法（M-TOT）测量的BC质量浓度之间的高度相关性获得的稳定质量吸收截面（MAC）也证实了这一点（Kondo等人，2009年）。还将M-COSMOS与2009年在东京使用SP2（M-SP2）测量的总BC质量浓度进行了比较。M-COSMOS和M-SP2高度相关（r（2）= 0.97），平均一致性在10%以内。这些结果表明，M-SP2、M-COSMOS和M-TOT几乎相同。使用白炽耐火BC颗粒的质量校准BC质量浓度由不同的技术得到了一致的结果。
In this study, we show that black carbon (BC) mass concentrations measured by different techniques are consistent and traceable. First, we present the volatilities of 13 organic compounds passed through a heated inlet. These data were used to quantify the interference of organic aerosols on the BC measurement techniques. The masses of the refractory particles that incandesce (m*(ref)) were used to calibrate BC mass measured by a single-particle soot photometer (SP2), which uses laser-induced incandescence. This calibration was influenced little by refractory organics and agreed well with that of fullerene soot, which indicates the consistency of the standards. We estimated the interference of pyrolyzed refractory organics on the BC measured with a filter-based absorption photometer continuous soot monitoring system (COSMOS) with a heated inlet to be small in Asia. This was also confirmed by the stable mass absorption cross section (MAC) obtained by the high correlations between BC mass concentrations measured by COSMOS (M-COSMOS) and those measured by the thermal-optical transmittance method (M-TOT) (Kondo et al. 2009). M-COSMOS was also compared with total BC mass concentrations measured with an SP2 (M-SP2) in Tokyo in 2009. M-COSMOS and M-SP2 were highly correlated (r(2) = 0.97) and agreed to within about 10% on average. These results demonstrate that M-SP2, M-COSMOS, and M-TOT were nearly identical. Use of the masses of incandescing refractory BC particles for calibration of BC mass concentrations determined by different techniques gave consistent results.