期刊论文

中文

环境科学

0250-3301

2013

34

5

1995-2002

10.13227/j.hjkx.2013.05.040

上海市科委基础研究重点项目(10JC1417200)； 国家自然科学基金青年科学基金项目(11005144)；

本校为第一机构

使用STAPLEX大流量六级采样器(7.2 μm),结合DRI Model 2001热光碳分析仪(TOR),分析了2010年5月~2011年5月期间上海市嘉定区(市郊)、徐汇区(市区)的大气颗粒物样品中有机碳(OC)和元素碳(EC)的粒径分布.结果表明,不同粒径的OC和EC质量浓度均呈双峰分布,较高峰出现于3.0 μm的两个粒径段.嘉定区(JD)和徐汇区(XH)PM_(3.0)中OC的质量浓度分别为16.35μg·m~(-3)和11.85μg·m~(-3),EC质量浓度分别为2.22μg·m~(-3)和1.91μg·m~(-3),市郊大气颗粒物中碳组分质量浓度高于市区,说明市郊碳污染更为严重.在

Using STAPLEX pumping system with a six-stage cascade impactor (size range: 7.2 microm), the atmospheric particulate samples at suburb (Jiading District) and urban (Xuhui District) sites in Shanghai, China were collected from May 2010 to May 2011. The organic carbon (OC) and the element carbon (EC) of those samples were analyzed by a DRI Model 2001 thermal/optical carbon analyzer with the reflectance (TOR) method. The size distributions of OC and EC in atmospheric particles both showed bimodal distributions at Jiading and Xuhui, with the peaks at size range of < 0.49 microm. Meanwhile, the ave...