【作者】 赖森潮； 邹世春； 张颖仪； 曹军骥； 李顺诚；

【Author】 Lai Senchao Zou Shichun Zhang Yingyi Cao Junji Lee Shun-chengSchool of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China; Research Center for Urban Environ. Tech. & Management, The Hong Kong Polytechnic University, Hong Kong, China

【机构】 中山大学化学与化学工程学院； 中国科学院地球环境研究所； 香港理工大学城市环境科技与管理研究中心；

【摘要】 2002年1-12月在广州使用Mini-volume采样器收集PM10和PM2.5样品,测定了其中有机碳(OC)和元素碳(EC)的含量。结果表明,PM10中OC和EC的年平均值分别为18.8和6.6μgm-3,PM2.5中OC和EC的年平均值分别为15.4和5.4μgm-3,其中80%以上的OC和EC存在于细粒子PM2.5中。广州大气中OC和EC主要来源于机动车排放,此外,在PM10和PM2.5样品中分别有约38.4%和31.5%的OC为次生有机碳(SOC),表明广州市区大气中存在较强烈的大气光化学反应。更多还原

【Abstract】 PM10 and PM2.5 samples were collected from January to December 2002 at an urban site in Guangzhou. The concentrations of organic carbon (OC) and elemental carbon (EC) were quantified. Annual-average concentrations of OC and EC were 18.8 and 6.6 μg m-3 for PM10 and 15.4 and 5.4 μg m-3 for PM2.5. More than 80% of OC and EC resided in PM2.5. Vehicular emission was the dominant source of OC and EC. It was estimated that secondary organic carbon constituted 38.4% and 31.5% of the total organic carbon in PM10 and PM2.5, respectively.更多还原