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华北某市PM2.5成分的季节变化特征 [中文引用][英文引用]

Seasonal Variation Characteristics of PM2.5 Components in a City of North China

作者(英文):ZHANG Ying1  CHEN Fengge1  HE Yan1  YANG Lixue1  ZHANG Tiqiang2  FAN Weiwei1  BAI Ping1 
单位(英文): 
分类号:X513
出版年·卷·期(页码):2020·10·第3期(277-283)
DOI:
-----摘要:-------------------------------------------------------------------------------------------

目的 了解2015年华北某市空气中细颗粒物(PM2.5)成分的季节变化和化学组成特征。方法 采集该市主城区PM2.5样品研究其中4种水溶性离子、15种多环芳烃和9种金属/类金属成分。分别采用离子色谱法、气象质谱法和电感耦合等离子体质谱法获得不同成分的浓度,并采用中位数和非参数比较、富集因子等方法进行描述和分析,阐明成分的季节变化和化学组成特征。结果 2015年该市主城区PM2.5质量浓度具有明显的季节变化特征,即冬季 > 春季 > 秋季 > 夏季;在冬季PM2.5浓度相比其它季节波动幅度大。冬季4种离子的总离子浓度最高,可能的主要来源有采暖季燃煤和汽车尾气排放以及城市周边农业或畜牧业发展。15种多环芳烃的总浓度变化特征是:冬季 > 春季 > 秋季 > 夏季。15种多环芳烃总浓度与季节温度成负相关。成分中金属/类金属成分As、Sb、Se、Tl、Hg和Cr浓度的季节变化特征是冬季 > 秋季 > 春季 > 夏季,Cd和Ni的季节变化为冬季 > 春季 > 秋季 > 夏季,Be的季节变化是:秋季 > 冬季 > 夏季 > 春季。除Cr、Ni、Be和As外,其它5种成分均来自人类活动污染。结论 2015年该市PM2.5成分季节变化特征是冬季污染程度最强、春季其次、夏季最弱。因此在冬春两季对该环境下的人群健康影响较大,需采取防霾措施。
 

-----英文摘要:---------------------------------------------------------------------------------------

Objectives To understand the seasonal variations and chemical compositions of fine particulate matters (PM2.5) in the air of a city in North China in 2015. Methods PM2.5 samples were used to determine chemical compositions of four water-soluble ions, 15 polycyclic aromatic hydrocarbons (PAHs) and 9 metals/metalloids by ion chromatography, meteorological mass spectrometry and inductively coupled plasma mass spectrometry. Median and non-parametric comparisons as well as enrichment factors method were used to describe and analyze the seasonal variation and chemical composition characteristics of the components. Results The result showed that PM2.5 concentration in the main urban area of the city had obvious seasonal variation characteristics in 2015, namely winter > spring > autumn > summer; PM2.5 concentration fluctuated greatly in winter compared with other seasons. The total ion concentration of the four ions was highest in winter. The possible main sources were coal combustion and automobile exhaust emissions in the heating season and the development of agriculture or animal husbandry around the city. The variation characteristics of the total concentration of 15 PAHs were winter > spring > autumn > summer. The concentration of total PAHs was negatively correlated with seasonal temperature. The seasonal variation characteristics of As, Sb, Se, Tl, Hg and Cr concentrations in the compositions were winter > autumn > spring > summer. The seasonal variation of Cd and Ni was winter > spring > autumn > summer. The seasonal variation of Be was autumn > winter > summer > spring. Except that Cr, Ni, Be and As, the other five components came from human activities. Conclusions The seasonal variation of PM2.5 levels in 2015 was highest in winter, then in spring and the lowest in summer. Therefore, the impacts of winter and spring on the health of the population in this environment were greater, and measures to prevent haze need to be taken.
 

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若需在您的论文中引用此文,请按以下格式著录参考文献:
中文著录格式: 张莹1,,陈凤格1,,何燕1,,杨立学1,,张体强2,,范尉尉1,,白萍1.华北某市PM2.5成分的季节变化特征.环境卫生学杂志.2020;10(3):277-283.
英文著录格式: ZHANG,Ying1,,CHEN,Fengge1,,HE,Yan1,,YANG,Lixue1,,ZHANG,Tiqiang2,,FAN,Weiwei1,,BAI,Ping1.Seasonal Variation Characteristics of PM2.5 Components in a City of North China..2020;10(3):277-283.

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