武汉市青山区冬季PM_(2.5)中水溶性离子的化学特征及来源  

Chemical Characteristics and Sources of Water-soluble Ions in PM_(2.5)During Winter in Qingshan District,Wuhan City

作　　者：卢欣宜 张锦强 黄晓婷 邹豆豆 张烁 张丽 刘婷 毛瑶 LU Xinyi;ZHANG Jinqiang;HUANG Xiaoting;ZOU Doudou;ZHANG Shuo;ZHANG Li;LIU Ting;MAO Yao(School of Environmental Science and Engineering,Hubei Polytechnic University,Huangshi Hubei 435003;Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation,Hubei Polytechnic University,Huangshi Hubei 435003)

机构地区：[1]湖北理工学院环境科学与工程学院,湖北黄石435003 [2]湖北理工学院矿区环境污染控制与修复湖北省重点实验室,湖北黄石435003

出　　处：《湖北理工学院学报》2025年第2期32-36,94,共6页Journal of Hubei Polytechnic University

基　　金：湖北省教育厅科学技术研究项目(项目编号:B2023232);湖北省大学生创新训练计划项目(项目编号:S202310920026);中央引导地方科技发展资金项目(项目编号:2022BGE252)湖北省自然科学基金创新发展联合基金项目(项目编号:2022CFD057,2024AFD024)。

摘　　要：为了分析武汉市青山区冬季PM_(2.5)中水溶性离子的污染特征,于2019年12月1日-31日在武汉市青山区采集冬季大气PM_(2.5)样品,分析其水溶性无机离子组成、含量和来源特征。结果表明:武汉市青山区冬季日均PM_(2.5)质量浓度为97.4μg/m^(3),重度污染天PM_(2.5)质量浓度为清洁天的2.52倍。水溶性离子浓度均值为63.5μg/m^(3),重度污染天NH_(4)^(+)、SO_(4)^(2-)及NO_(3)^(-)(SNA)占比达88.7%,NH_(4)^(+)主要以(NH_(4))_(2)SO_(4)和NH_(4)NO_(3)形式存在,且NO_(3)^(-)浓度随污染程度加重而增大。通过主成分分析发现,武汉市青山区PM_(2.5)主要污染源为土壤扬尘和燃烧的混合源、二次污染物和工业源。To analyze the pollution characteristics of water-soluble ions in PM_(2.5)during winter in Qingshan District,Wuhan City,PM_(2.5)samples were collected from December 1st tO_(3)1st,2019,to investigate the composition,concentration,and sources features of water-soluble ions.Results showed that the daily average mass PM_(2.5)concentration in winter was 97.4μg/m^(3),with the PM_(2.5)concentration on heavy pollution days being 2.52 times than that on clean days.The mean concentration of water-soluble ions was 63.5μg/m^(3),and NH_(4)^(+),SO_(4)^(2-),and NO_(3)^(-)(SNA)accounted for 88.7%of the total ions during heaveily pollution days.NH_(4)^(+)was predominantly present in the forms of(NH_(4))_(2)SO_(4)and NH_(4)NO_(3),and the NO_(3)^(-)concentration increased with the aggravation of pollution.Principal component analysis(PCA)revealed that the primary pollution sources of PM_(2.5)were a mixed source of soil dust and combustion,secondary pollutants,and industrial sources.

关 键 词：PM_(2.5) 水溶性离子 主成分分析 

分 类 号：X823[环境科学与工程—环境工程]