近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化

	近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化
其他题名	Changes in Health Risks and Pollution Sources of Atmospheric PM_(2.5)-bound Metals in a Background Site in North China
	石晓兰 1,2; 宗政 3,4; 彭辉 1,2; 张欣捷 3,4; 孙溶 3,4; 王晓平 5; 田崇国3,4
发表期刊	环境科学
ISSN	0250-3301
	2023
卷号	44 期号:10 页码:5335-5343
关键词	重金属 PM_(2.5) 来源健康风险华北背景大气
英文摘要	To explore the change features of PM_(2.5)-bound metals in a background site of North China in the past ten years,71 and 160 samples were collected from December 2011 to January 2013 (period Ⅰ) and from September 2019 to November 2021 (period Ⅱ) in Tuoji Island National Atmospheric Monitoring Station,respectively.The concentration of metals sampled was determined using ICP-MS,and the concentrations,sources,and health risks of heavy metals were compared.The results revealed that the average concentration of PM_(2.5) was (54.06 39.71) mug·m~(-3) during period Ⅱ,which was 3.53 ng·m~(-3) lower than that during period Ⅰ.The concentrations of Zn,Mn,As,Pb,and V in stage Ⅱ decreased by 54.53,172.63,0.8,79.06,and 3.81 ng·m~(-3),respectively,whereas the concentrations of Cr,Cu,Cd,and Ni increased by 2.01,5.42,3.03,and 3.55 ng·m~(-3),respectively.The PMF model results indicated that the biggest contributor to PM_(2.5)-bound metal was industrial emissions(32.32%),followed by coal combustion (27.47%),vehicle emissions (23.70%),ship emissions (9.69%),and dust sources (6.83%) during period Ⅱ.The contribution ratio of dust sources and ship emissions decreased by 20.73% and 8.83%,respectively,whereas for coal combustion and industrial emissions it increased by 2.50% and 13.52%,respectively,when compared with that during period Ⅰ.The total carcinogenic risk induced by PM_(2.5)-bound heavy metals of period Ⅱ increased,with the highest contributions by Cr and Cd.The total non-carcinogenic risk decreased,with Mn contributing the most.Therefore,in the process of air pollution control,the control of pollution sources of heavy metals such as Cr and Mn should be reinforced.
中文摘要	为探究近10年华北背景大气PM_(2.5)中重金属的变化特征,分别于2011年12月至2013年1月(Ⅰ期)和2019年9月至2021年11月(Ⅱ期),在位于渤海中部的砣矶岛国家大气背景监测站各采集71个和160个PM_(2.5)样品,利用电感耦合等离子体质谱仪(ICP-MS)测定样品中重金属浓度,对比Ⅰ期与Ⅱ期重金属浓度、来源及健康风险.结果表明,Ⅱ期砣矶岛ρ(PM_(2.5))均值为(54.06±39.71)μg·m^(-3),比Ⅰ期浓度低3.53μg·m^(-3).Ⅱ期PM_(2.5)中ρ(Zn)、ρ(Mn)、ρ(As)、ρ(Pb)和ρ(V)比Ⅰ期分别降低了54.53、172.63、0.8、79.06和3.81 ng·m^(-3),而ρ(Cr)、ρ(Cu)、ρ(Cd)和ρ(Ni)分别升高了2.01、5.42、3.03和3.55 ng·m^(-3).PMF结果表明,Ⅱ期污染源贡献率大小为:工业排放源(32.32%)》燃煤源(27.47%)》机动车排放(23.70%)》船舶排放(9.69%)》扬尘源(6.83%),与Ⅰ期相比,扬尘源和船舶排放源对砣矶岛PM_(2.5)中金属的贡献率分别降低20.73%和8.83%,燃煤源和工业排放的贡献率分别增加2.50%和13.52%.Ⅱ期重金属总致癌风险增加,主要以Cr和Cd的贡献为主,总非致癌风险降低,以Mn贡献为主.因此,在大气污染治理进程中要进一步加强对Cr、Cd和Mn等重金属的污染源的管控.
文章类型	期刊论文
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:7563405
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/34162
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
作者单位	1.中国海洋大学环境科学与工程学院,青岛266100; 2.中国海洋大学海洋环境与生态教育部重点实验室,青岛266100; 3.中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,烟台264003; 4.山东省海岸带环境过程重点实验室,烟台264003; 5.鲁东大学资源与环境工程学院,烟台264025
推荐引用方式 GB/T 7714	石晓兰,宗政,彭辉,等. 近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化[J]. 环境科学,2023,44(10):5335-5343.
APA	石晓兰.,宗政.,彭辉.,张欣捷.,孙溶.,...&田崇国.(2023).近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化.环境科学,44(10),5335-5343.
MLA	石晓兰,et al."近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化".环境科学 44.10(2023):5335-5343.