典型道路路边空气颗粒物中碳组分的组成特征

被引：9

作者：

张静 ^{[1
]}

吴琳 ^{[1
]}

杨志文 ^{[1
]}

方小珍 ^{[1
]}

王安旭 ^{[1
]}

毛洪钧 ^{[1
]}

LIU Mingyue ^{[2
]}

机构：

[1] 南开大学环境科学与工程学院城市交通污染防治研究中心

[2] Centre For Urban Transport Emission Research,College of Environmental Science and Engineering,Nankai University

来源：

中国环境科学 | 2016年 / 36卷 / 09期

关键词：

颗粒物; 路边; 碳组分; 天津;

D O I：

暂无

中图分类号：

X513 [粒状污染物];

学科分类号：

0706 ; 070602 ;

摘要：

在天津市内选取了4条不同等级的道路（次干道,主干道,快速路,外环线）,于2015年4～5月分别在4条道路的路边进行了PM2.5和PM10样品和车流量信息的采集,并对其中的碳组分进行了分析.结果显示,天津路边PM2.5和PM10中OC、EC的浓度与国内已研究的其它城市相比处于中等水平,与国外城市相比,国内这些城市的OC、EC的浓度水平则较高.char-EC、soot-EC、OC、EC在PM2.5中的百分含量在4条道路之间存在显著性差异,在4条路上百分含量为主干道>快速路>外环线>次干道,而PM10不存在.PM2.5中OC/EC和char-EC/soot-EC的平均比值分别是2.95和2.3,PM10中分别为3.1和2.2.相关性分析的结果表明PM2.5和PM10中OC和EC有相同的来源,且EC与char-EC存在线性关系.

引用

页码：2561 / 2566

页数：6

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