Huang Jiong-Li, Chen Zhi-Ming, Mo Zhao-Yu, Li Hong-Jiao, Yang Jun-Chao, Liu Hui-Lin, Mao Jing-Ying, Liang Gui-Yun, Zhang Da-Biao, Wu Xiong-Ping, Hao Shuang
Scientific Research Academy of Guangxi Environmental Protection, Nanning 530022, China.
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Huan Jing Ke Xue. 2018 Jan 8;39(1):27-37. doi: 10.13227/j.hjkx.201702102.
Two hundred eighteen PM and 202 PM samples were collected at three sampling sites to study the pollution characteristics of carbonaceous aerosols in Yulin from July 2015 to March 2016. Organic carbon (OC) and elemental carbon (EC) in the PM and PM samples were analyzed by a Multiwavelength Thermal/Optical Carbon Analyzer, and the characteristics, including pollution levels, temporal and spatial distributions, and possible sources of OC and EC, were investigated. The results showed that the OC and EC mass concentrations in PM in Yulin were 10.99 and 5.11 μg·m, respectively, while the OC and EC mass concentrations in PM were 7.51 and 4.70 μg·m, respectively. Strong correlations between OC and EC were found in PM(=0.58) and PM(=0.60). The winter average concentrations of secondary organic carbon (SOC) in PM and PM were 14.50 μg·m and 6.74 μg·m, respectively. The SOC/OC ratios in both the PM and PM were higher than 0.5. The contribution of SOC to OC was 80.6% in PM and 77.7% in PM, which were the highest in the summer, in accordance with the high temperature and strong solar radiation in the summer.
2015年7月至2016年3月期间，在三个采样点采集了218份PM和202份PM样本，以研究榆林市碳质气溶胶的污染特征。通过多波长热/光碳分析仪分析了PM和PM样本中的有机碳（OC）和元素碳（EC），并对OC和EC的污染水平、时空分布及可能来源等特征进行了研究。结果表明，榆林市PM中OC和EC的质量浓度分别为10.99和5.11μg·m，而PM中OC和EC的质量浓度分别为7.51和4.70μg·m。在PM（=0.58）和PM（=0.60）中发现OC和EC之间有很强的相关性。PM和PM中二次有机碳（SOC）的冬季平均浓度分别为14.50μg·m和6.74μg·m。PM和PM中SOC/OC比值均高于0.5。夏季高温和强太阳辐射下，SOC对OC的贡献率在PM中为80.6%，在PM中为77.7%，均为夏季最高。
