Yang Yi-Hong, Tao Jun, Gao Jian, Li Xiong, Shi Zhan, Han Bao-Xin, Xie Wen-Zhang, Cao Jun-Ji
School of Chemical Engineering and Materials Science, Zhuhai Campus, Beijing Institute of Technology, Zhuhai 519088, China.
South China Institute of Environmental Sciences, MEP, Guangzhou 510655, China.
Huan Jing Ke Xue. 2013 Nov;34(11):4152-8.
Daily (24-h average) PM2.5 samples were collected simultaneously at urban and suburban sites of nine cities (Nanning, Qinzhou, Fangchenggang, Beihai, Zhanjiang, Maoming, Haikou, Yangpu and Dongfang) in Beibu Gulf Zone during August 2009. All samples were analyzed for organic and elemental carbon (OC and EC) analyses by the thermal/optical reflectance following IMPROVE protocol. Characteristics of OC and EC concentration levels, spatial distribution, and the possible sources were discussed. The average concentrations of PM2.5, OC and EC in Beibu Gulf zone were (38.4 +/- 17.7), (9.2 +/- 2.6) and (1.9 +/- 1.1) microg x m(-3), respectively. The total carbonaceous aerosol (TCA) accounted for over 56.8% of PM2.5. OC mainly came from biomass burning and secondary organic carbon (SOC), while motor exhaust and industrial emissions were the primary source of EC during summer in Beibu Gulf Zone.
2009年8月期间，在北部湾地区的九个城市（南宁、钦州、防城港、北海、湛江、茂名、海口、洋浦和东方）的城区和郊区同时采集了每日（24小时平均值）的PM2.5样本。所有样本均按照IMPROVE协议通过热/光反射法进行有机碳和元素碳（OC和EC）分析。讨论了OC和EC的浓度水平特征、空间分布以及可能的来源。北部湾地区PM2.5、OC和EC的平均浓度分别为（38.4±17.7）、（9.2±2.6）和（1.9±1.1）μg·m⁻³。总碳质气溶胶（TCA）占PM2.5的比例超过56.8%。OC主要来自生物质燃烧和二次有机碳（SOC），而在北部湾地区夏季，机动车尾气排放和工业排放是EC的主要来源。
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