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辽宁西南典型城市冬季大气细颗粒物水溶性无机离子污染特征及来源解析
引用本文:杨铁金,王慧超,李红梅,李刚,康楠,苗云阁,杨大伟,金增鑫,翟克新,师晓帆,任丽红.辽宁西南典型城市冬季大气细颗粒物水溶性无机离子污染特征及来源解析[J].环境化学,2022,41(1):160-172.
作者姓名:杨铁金  王慧超  李红梅  李刚  康楠  苗云阁  杨大伟  金增鑫  翟克新  师晓帆  任丽红
作者单位:齐齐哈尔大学,齐齐哈尔,161000;齐齐哈尔大学,齐齐哈尔,161000;中国环境科学研究院环境基准与风险评估国家重点实验室,北京,100020;辽宁省生态环境厅大气处,沈阳,110000;中国环境科学研究院环境基准与风险评估国家重点实验室,北京,100020;辽宁省生态环境事务服务中心,沈阳,110000;朝阳市环境保护局,朝阳,122000;葫芦岛市环境保护局,葫芦岛,125000
基金项目:国家自然科学基金(41705136);;中央级公益性科研院所基本科研业务专项(2019YSKY-025);;辽宁省科学技术计划项目-自然基金指导计划(2019-ZD-0861)资助~~;
摘    要:本研究于2018年12月3日-2019年1月1日在辽宁省西南典型城市葫芦岛市和朝阳市分别布设3个城区采样点,在区域传输点龙屯水库布设1个采样点,采集大气细颗粒物PM2.5样品(n=201).使用离子色谱检测样品中的Na+、Mg2+、Ca2+、K+、NH4+、SO42-、F-、Cl-和NO3-的质量浓度.观测期间PM2....

关 键 词:水溶性离子  SNA  SOR  NOR  后向轨迹  PM2.5  辽宁  冬季大气

Characteristics and source analysis of water-soluble inorganic ion pollution of fine atmospheric particles in winter in typical cities of southwest Liaoning Province
YANG Tiejin,WANG Huichao,LI Hongmei,LI Gang,KANG Nan,MIAO Yunge,YANG Dawei,JIN Zengxin,ZHAI Kexin,SHI Xiaofan,REN Lihong.Characteristics and source analysis of water-soluble inorganic ion pollution of fine atmospheric particles in winter in typical cities of southwest Liaoning Province[J].Environmental Chemistry,2022,41(1):160-172.
Authors:YANG Tiejin  WANG Huichao  LI Hongmei  LI Gang  KANG Nan  MIAO Yunge  YANG Dawei  JIN Zengxin  ZHAI Kexin  SHI Xiaofan  REN Lihong
Institution:(Qiqihar University,Qiqihar,161000,China;State key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing,100020,China;Department of atmosphere,Department of Ecological Environment of Liaoning Province,Shenyang,110000,China;Liaoning Provincial Ecological and Environmental Affairs Service Center,Shenyang,110000,China;Chaoyang County Environmental Protection Bureau,Chaoyang,122000,China;Huludao Environmental Protection Bureau,Huludao,125000,China)
Abstract:In this study,three urban sampling sites were set up in Huludao and Chaoyang of typical cities in southwestern Liaoning Province,of China.And one regional transportation site was at Longtun reservoir.A total of 201 samples of atmospheric fine particulate(PM2.5)were collected at these sampling sites from December 3,2018 to January 1,2019.The mass concentrations of Na+,Mg2+,Ca2+,K+,NH4+,SO42-,F-,Cl-and NO3-in the samples were detected by ion chromatography.During the sampling period,the average mass concentration of PM2.5showed as Huludao City(54.25±26.14)μg·m-3>Chaoyang City(45.38±20.64)μg·m-3>Longtun Reservoir(33.73±21.64)μg·m-3.Water-soluble inorganic ions are the main components of PM2.5accounting for 49%,52%and 49%of PM2.5mass concentrations in Chaoyang City,Huludao City and Longtun reservoir,respectively.NH4+,NO3-and SO42-were the major components of the water-soluble ions in PM2.5;The sulfur oxidation rate(SOR)and nitrogen oxidation rate(NOR)were both greater than 0.1 in Huludao City and Chaoyang City,indicating that there was an obvious secondary aerosol transformation process in the two cities.The concentrations of F-,NH4+,Cl-and K+in PM2.5during polluted periods in Chaoyang city are about 2.5 times higher than clean periods;NH4+,SO42-and NO3-in pollution periods in Huludao City are about three times than clean periods.The values of SOR were 0.13 and 0.18 during pollution periods in Chaoyang City and Huludao city,which were 0.76 and 1.13 times than those values during clean periods.NOR values during polluted periods were 0.17 and 0.23,respectively,which were 1.5 and 1.91 times than that of clean days.Except SOR in Chaoyang city,SOR and NOR in the polluted days were both larger than those in the clean days,indicating that the secondary transformation of SO2and NO2to SO42-and NO3-in the polluted day was enhanced;The results of principal analysis showed that the main sources of PM2.5 in Huludao City and Chaoyang City were secondary transformation,coal combustion and biomass burning,while the main pollution source in Longtun reservoir was secondary transformation.The backward trajectories showed that the air masses are mainly originated from Inner Mongolia and Russia to Liaoning Province.
Keywords:water-soluble ion  SNA  SOR  NOR  backward trajectory  PM2  5  Liaoning  winter atmospheric  
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