干旱区生态环境知识资源中心(Arid): 宜宾市PM_(2.5)中碳组分的污染特性及来源分析

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	宜宾市PM_(2.5)中碳组分的污染特性及来源分析
其他题名	Pollution characteristics and source analysis of carbonaceous aerosol in PM_(2.5) in Yibin,China
	尹寒梅 1; 陈军辉 2; 冯小琼 1; 徐雪梅 1; 姜涛 2; 钱骏 2; 叶宏 2
来源期刊	环境化学
ISSN	0254-6108
出版年	2019
卷号	38 期号:4 页码:738-745
中文摘要	2017年1月12月期间在四川省宜宾市布置4个点位,共采集360个PM_(2.5)样品膜,采用美国沙漠研究所DRI Model 2001型热光分析仪测定PM_(2.5)样品中OC、EC的浓度值,应用OC/EC比值法对SOC进行了估算.结果表明,宜宾市PM_(2.5)年均浓度为75.2 mug·m~(-3).OC、EC年均浓度分别为14.3 mug·m~(-3)和4.30 mug·m~(-3),季节变化趋势为冬季>秋季>春季>夏季,OC占PM_(2.5)比例为19. 0%,为PM_(2.5)重要组成部分. SOC年均浓度为4.70 mug·m~(-3),对OC贡献较大,在OC中占比为29.3%; SOC在OC中的占比春季>冬季秋季>夏季.进一步对 OC1、OC2、OC3、OC4、EC1、EC2、EC3、和OPC进行主成分分析,结果表明机动车尾气、燃煤排放和生物质燃烧是宜宾市PM_(2.5)中OC和EC的主要贡献源,可贡献PM_(2.5)中碳组分的54.0%69.0%.
英文摘要	Three hundred and sixty PM_(2.5) samples were collected in locations in Yibin,Sichuan Province,from January 2017 to December 2017. The concentrations of organic carbon (OC) and element carbon (EC) in PM_(2.5) samples were determined by DRI Model 2001 Thermo /Optical Carbon Analyzer. The secondary organic carbon(SOC) was then estimated by the OC /EC ratio. The results showed that the annual average concentration of PM_(2.5) in Yibin was 75. 2 mug·m~(-3) . The annual average concentrations of OC and EC were 14.3 mug·m~(-3) and 4.30 mug·m~(-3),respectively. Also,the OC and EC concentrations showed a seasonal variation in an order of winter >autumn >spring > summer. OC accounted for 19.0% of PM_(2.5),which was an important part of PM_(2.5) . Annual average concentration of SOC was 4.70 mug·m~(-3),accounting for 29.3% of total OC. Note that the proportion of SOC in OC followed the order of spring >winter autumn >summer. Further principal component analysis (PCA) of OC1,OC2,OC3,OC4,EC1,EC2,EC3 and OPC showed that motor vehicle exhaust,coal-fired emissions and biomass burning were the main sources of OC and EC in PM_(2.5) in Yibin,contributing 54.0%69.0% of the carbonaceous aerosol in PM_(2.5) .
中文关键词	有机碳(OC) ; 元素碳(EC) ; 二次有机碳(SOC) ; 污染特性 ; 宜宾市
英文关键词	PM_(2.5) PM_(2.5) organic carbon(OC) elemental carbon(EC) secondary organic carbon(SOC)
语种	中文
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6482954
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316263
作者单位	1.四川省环保科技工程有限责任公司;;四川省环境保护科学研究院, ;;, 成都;;成都, ;; 610041;;610041; 2.四川省环境保护科学研究院, 成都, 四川 610041, 中国
推荐引用方式 GB/T 7714	尹寒梅,陈军辉,冯小琼,等. 宜宾市PM_(2.5)中碳组分的污染特性及来源分析[J],2019,38(4):738-745.
APA	尹寒梅.,陈军辉.,冯小琼.,徐雪梅.,姜涛.,...&叶宏.(2019).宜宾市PM_(2.5)中碳组分的污染特性及来源分析.环境化学,38(4),738-745.
MLA	尹寒梅,et al."宜宾市PM_(2.5)中碳组分的污染特性及来源分析".环境化学 38.4(2019):738-745.