深圳市大气PM<sub>2.5</sub>来源解析

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Abstract

In order to identify main sources and their characteristics of PM_2.5 in atmosphere, filter samples of PM_2.5 were collected at five receptors in Shenzhen during March, June, September and December in 2014. Mass concentrations and chemical compositions were analyzed, then the positive matrix factorization (PMF) model was applied for source apportionment. The results showed the annual mean concentration of PM_2.5 reached 35.7μg/m³ in Shenzhen in 2014, with vehicle emissions, secondary sulfate, secondary organic aerosol (SOA) and secondary nitrate identified as the major sources, contributing 27%, 21%, 12%, and 10% to PM_2.5, respectively. Fugitive dust, biomass combustion, ship emissions, industrial emissions, marine emissions, building dust and coal burning each contributed 2%~6%.The tempo-spatial variations of sources revealed that secondary sulfate, biomass combustion, SOA, industrial emissions, ship emissions and marine emissions had obvious regional pollution characteristics; however, vehicle emissions, secondary nitrate, coal burning, fugitive dust and building dust showed obvious local emission characteristics.

Key words： source apportionment positive matrix factorization (PMF) fine particle matter(PM_2.5) Shenzhen

Received: 05 June 2018

PACS:

X703.5

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	Articles by authors
	SUN Tian-le
	ZOU Bei-bing
	HUANG Xiao-feng
	SHEN Hang-yin
	DAI Jing
	HE Ling-yan

Cite this article:

SUN Tian-le,ZOU Bei-bing,HUANG Xiao-feng等. Source apportionment of PM_2.5 pollution in Shenzhen[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(1): 13-20.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I1/13

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