北京市春季PM2.5中金属元素污染特征及来源分析

doi:10.16258/j.cnki.1674-5906.2016.07.013

CORC > 北京大学 > 环境科学与工程学院

	北京市春季PM2.5中金属元素污染特征及来源分析; Pollution Characteristics and Source Analysis of Metal Elements in PM2.5 during Spring in Beijing
	熊秋林 ; 赵文吉 ; 王皓飞 ; 赵佳茵 ; 汪涵涵 ; 孙春媛 ; 张骞中
刊名	生态环境学报
	2016
关键词	细颗粒物金属元素富集因子分析 Pearson相关分析因子分析 PM2.5 metal elements enrichment factor analysis pearson correlation analysis factor analysis
DOI	10.16258/j.cnki.1674-5906.2016.07.013
英文摘要	PM2.5是我国大部分城市大气环境中的首要污染物。PM2.5中的金属元素尤其是重金属，其质量浓度超标会引发生态环境风险及人体健康风险。为了研究北京市春季大气PM2.5中金属元素污染状况及其来源，于2015年5月同步采集了北京城区及郊区大气PM2.5样品13份。用Elan DRC II型电感耦合等离子体质谱仪（ICP-MS）测试了样品中的15种金属元素质量浓度，测试结果表明，Na和Ca占比最高，两元素质量浓度之和占元素总质量浓度的72.23%（城区）和71.96%（郊区）；Mg、Al、Fe、K占比较高，这4种元素质量浓度之和占元素总质量浓度的25.84%（城区）和26.35%（郊区）；北京城区PM2.5中大部分元素质量浓度较郊区均有所下降，而Zn、Ni、Cu 3种重金属质量浓度表现为城区明显高于郊区。北京城区白天PM2.5中大部分元素质量浓度较夜晚均有所下降，而Ba、Fe、Pb 3种重金属质量浓度表现为白天略高于夜晚。富集因子分析表明，2015年春季北京 PM2.5中Fe、Al、K、Ba、Mn、Cr的EF值均在1~10之间，为轻度富集；Mg、Ca、Na、Cu、Pb的EF值均在10~100之间，为中度富集；Mo的EF值超过了1000，为超富集。由Pearson相关分析、因子分析结果以及污染源排放的特征元素判断，北京春季PM2.5中金属元素主要有三大来源，分别为地壳来源（土壤尘和建筑尘）、冶金源和机动车源。; PM2.5 is the primary pollutant in atmospheric environment of most cities in China. Metal elements, especially heavy metals, in PM2.5 can harm ecological environment and human health. In order to study characteristics of metal elements and their sources in spring atmospheric PM2.5, 13 PM2.5samples were collected in Beijing City and suburban in May 2015. Then, 15 metal elements' concentrations were measured by Elan DRC II type inductively coupled plasma mass (ICP-MS). The results show that concentrations of Na and Ca were the highest, accounting for 72.23% of those of total elements (in urban area) and 71.96% (in suburb); concentrations of Mg, Al, Fe, K were the second highest, accounting for 25.84% of those of total elements (in urban area) and 26.35% (in suburb). Most elements' concentrations in Beijing city decreased compared to suburban, while concentrations of three heavy metals (Zn, Ni, Cu) in urban area were significantly higher than those in suburb. Most concentrations of elementsin Beijing city during the day decreased compared to those at night, however, concentrations of Ba, Fe and Pb during the day were slightly higher than those at night. Enrichment factor analysis showed that Ba, Mn, Fe, Al, K, Cr (EF values 1~10) were lightly enriched; Mg, Ca, Na, Cu, Pb (EF values 10~100) were moderately enriched; Mo ( EF more than 1000) was highly enriched. Sources analysis of metal elements in PM2.5 were conducted through a multi-method analysis, including Pearson correlation analysis, factor analysis and pollution emission source-marked elements analysis. The results indicate that sources of spring PM2.5 in Beijing were mainly composed of the earth's crust sources (including soil dust and construction dust), metallurgical industries and vehicle emissions.; 国家教育部博士点基金项目(20111102110004)；国家青年科学基金项目(41101404)；北京市教委科技计划项目(KM201110028013)；北京市教委学科建设与研究生教育建设项目; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 7; 1181-1187; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/478795]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	熊秋林,赵文吉,王皓飞,等. 北京市春季PM2.5中金属元素污染特征及来源分析, Pollution Characteristics and Source Analysis of Metal Elements in PM2.5 during Spring in Beijing[J]. 生态环境学报,2016.
APA	熊秋林.,赵文吉.,王皓飞.,赵佳茵.,汪涵涵.,...&张骞中.(2016).北京市春季PM2.5中金属元素污染特征及来源分析.生态环境学报.
MLA	熊秋林,et al."北京市春季PM2.5中金属元素污染特征及来源分析".生态环境学报 (2016).