[1]李旭东,黄 磊. 武汉市城区PM2.5重金属元素源解析变化[J].湖北工业大学学报,2021,(4):74-78.
　LI Xudong,HUANG Lei. Source Apportionment Variations of Heavy Metals[JZ]in PM2.5 in Urban Wuhan[J].,2021,(4):74-78.
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 武汉市城区PM2.5重金属元素源解析变化()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2021年第4期
页码:
74-78
栏目:
湖北工业大学学报
出版日期:
2021-08-26

文章信息/Info

Title:
 Source Apportionment Variations of Heavy Metals[JZ]in PM2.5 in Urban Wuhan
文章编号:
1003-4684(2021)04-0074-05
作者:
 李旭东;  黄 磊
 湖北工业大学土木建筑与环境学院， 湖北 武汉 430068
Author(s):
 LI Xudong ; HUANG Lei
 School of Civil Engin., Architecture and Environment,Hubei Univ.of Tech.,Wuhan 430068,China
关键词:
 ; 武汉城区;  大气污染;  源解析;  PM2.5
Keywords:
 ; urban Wuhan;  air pollution;  source apportionment;  PM2.5
分类号:
X823
文献标志码:
A
摘要:
 为识别武汉市城区大气细颗粒物（PM2.5）的季节特征，比较其重金属元素在不同年份源解析的变化，于2016年4月-2017年4月和2019年1月-2019年9月，在城区共采集240份样品，对其PM2.5及重金属元素（Na、Mg、Al、K、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Sr、Cd、Cs、Ce、Pb）的质量浓度进行测定。结果表明，PM2.5的质量浓度有明显的季节特征，冬季浓度最高，春季、秋季次之，夏季最低。采用正定矩阵因子（PMF）模型对武汉市城区大气细颗粒物（PM2.5）进行了来源解析。结果表明：两段采样时期（2016年4月-2017年4月和2019年1月-2019年9月）均识别了5个相同的因子，分别是化石燃料燃烧、金属生产、土壤粉尘、道路扬尘和生物质燃烧，对PM2.5的贡献率分别为19.7%、20.0%、19.3%、20.2%、20.7%和19.0%、20.9%、13.5%、20.5%、26.1%。由此可见，部分因子的贡献率发生了明显变化，其中生物质燃烧的贡献率显著上升，而土壤粉尘的贡献率则有所下降。
Abstract:
 To investigate the seasonal characteristics of PM2.5 and the sources of heavy metals in the different years in Wuhan, the mass concentration of PM2.5 and heavy metals were determined in the 240 aerosol samples collected at an urban site from April 2016 to April 2017 and from January 2019 to September 2019.Our results show a strong seasonal variation of PM2.5 with the highest concentration in winter followed by spring and autumn, and the lowest in summer. The positive Matrix Factorization (PMF) model revealed five causal factors of pollution in both of sampling years, namely fossil fuel combustion, metal production, soil dust, road dust and biomass burning. They contributed 19.7%, 20.0%, 19.3%, 20.2%, 20.7% and 19.0%, 20.9%, 13.5%, 20.5%, 26.1% to PM2.5 respectively in the two years, which shows a remarkable rise of biomass burning and a significant drop of soil dust.

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备注/Memo

备注/Memo:
［收稿日期］ 2020-11-01
［第一作者］ 李旭东(1995-)， 男， 湖北宜昌人，湖北工业大学硕士研究生，研究方向为大气细颗粒物污染防治
［通信作者］ 黄 磊(1976-)， 男， 湖北武汉人，湖北工业大学副教授，研究方向为大气污染,环境评价与规划
更新日期/Last Update: 2021-08-27