Mass Absorption Efficiency of Black Carbon over Four Major BC Emission Areas in China
The mass absorption efficiency (MAE) of black carbon (BC), an important site-specific optical parameter widely used in climate models, varies dramatically on the source types and measurement methods.In this study, the MAE of BC for source samples, residential coal buming and firewood burning, and ambient samples from four major BC emission areas in China were investigated though filter-based method.It was found that MAEBC for coal burning and firewood burning were 15.06±3.36 and 3.96±0.85m2/g respectively and positively correlated with OC/EC ratio.However, the correlation between OC/EC ratio and MAEBC for coal buming (r=0.804, p<0.05) samples is lower than that for firewood burning samples (r=0.871, p<0.05).The MAEBC in Beijing-Tianjin Tangshan Area, Yangtze River Delta, Chengdu-Chongqing Area and Pearl River Delta were 13.64±3.18, 14.35±1.04, 12.84±1.95, 13.27±0.95 m2/g and 8.53±1.52, 13.68±5.14, 8.44±2.14, 8.55±0.61 m2/g in summer and winter respectively.The higher OC/EC ratio in winter have significant impact on the optical properties of BC for ambient samples.
black carbon mass absorption efficiency carbonaceous fuel OC/EC
Xing Zhenyu Deng Junjun Du Ke
Institute of urban environment, CAS, Xiamen 361021, China
国际会议
北京
英文
23-24
2013-11-07（万方平台首次上网日期，不代表论文的发表时间）