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预防医学  2018, Vol. 30 Issue (12): 1208-1211    DOI: 10.19485/j.cnki.issn2096-5087.2018.12.005
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成都市大气PM2.5中Cl-、SO42-、NO3-和NH4+浓度分析
曹霞, 游钒, 周茂君, 丁建, 雍莉, 胡彬
四川省疾病预防控制中心理化所,四川 成都 610041
The concentrations of Cl-,SO42-,NO3- and NH4+ in atmospheric PM2.5 in Chengdu
CAO Xia, YOU Fan, ZHOU Mao-jun, DING Jian, YONG Li, HU Bin
Sichuan Provincial Center for Disease Control and Prevention,Chengdu,Sichuan 610041,China
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摘要 目的 了解成都市大气PM2.5中Cl- 、SO42-、NO3-和NH4+ 4种水溶性离子浓度,为控制PM2.5污染提供依据。方法 在成都市青羊区、高新区和彭州市设置PM2.5监测点,于2014年10月—2015年5月开展连续监测,采用离子色谱法测定Cl-、SO42-、NO3-和NH4+浓度,分析不同时间和监测点4种离子的浓度分布。结果 3个监测点大气PM2.5中SO42-浓度最高,为0.051 2~0.144 4 mg/m3;NH4+、Cl-和NO3-浓度分别为0.015 1~0.127 7 mg/m3,0.001 1~0.029 1 mg/m3和0.001 0~0.030 3 mg/m3。不同季节大气PM2.5中4种水溶性离子浓度差异有统计学意义(P<0.05),均以冬季最高。不同采样时间4种水溶性离子浓度差异均有统计学意义(P<0.05),Cl-浓度以彭州市2015年1月最高,为(0.029 1±0.011 6)mg/m3;SO42-浓度以青羊区2015年1月最高,为(0.134 4±0.052 5)mg/m3;NO3-浓度以高新区2015年1月最高,为(0.030 3±0.021 0)mg/m3;NH4+ 浓度以彭州市2015年2月最高,为(0.127 7±0.028 6)mg/m3。不同监测点Cl-浓度差异有统计学意义(P<0.05),NO3-、SO42-和NH4+浓度差异均无统计学意义(P>0.05)。监测点与采样时间不存在交互作用(均P>0.05)。结论 成都市大气PM2.5中4种水溶性离子浓度均以冬季最高,3个监测点Cl-浓度不同。
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关键词 PM2.5水溶性离子离子色谱    
AbstractObjective To understand the concentrations and distribution characteristics of Cl-,SO42-,NO3- and NH4+ in atmospheric PM2.5 in Chengdu,and to provide the basis for PM2.5 prevention. Methods We set Qingyang,Gaoxing and Pengzhou as three monitoring sites to collect the samples of atmospheric PM2.5 from October 2014 to May 2015. Then we employed ion chromatography to determine the concentrations of Cl-,SO42-,NO3- and NH4+ in the test samples,and compared their distribution characteristics of different sampling time and sites.Results The monthly mean concentrations of SO42-(0.051 2-0.144 4 mg/m3)and NH4+(0.015 1-0.127 7 mg/m3)were relatively higher,while Cl- (0.001 1-0.029 1 mg/m3)and NO3-(0.001 0-0.030 3 mg/m3)were relatively lower among the three monitoring sites in Chengdu. The concentrations of four water-soluble ions in PM2.5 were significantly different in winter,spring and autumn,with the highest values all appearing in winter(P<0.05). The monthly mean concentrations of four water-soluble ions were different in different sampling time(P<0.05). The highest concentration of Cl- was(0.029 1±0.011 6)mg/m3 in Pengzhou in January 2015;SO42- was(0.134 4±0.052 5)mg/m3 in Qingyang in January 2015;NO-3 was(0.030 3±0.021 0)mg/m3 in Gaoxin in January 2015;NH4+ was(0.127 7±0.028 6)mg/m3 in Pengzhou in February 2015;The concentrations of Cl- in different monitoring sites had significant differences(P<0.05),while the concentrations of NO3-,SO42- and NH4+ all had no significant differences(P>0.05). There was no interaction between monitoring sites and sampling time(all P>0.05).Conclusion All the four inorganic water-soluble ions in PM2.5 in Chengdu had the highest concentrations in winter. The concentration of Cl- was also related to the monitoring site.
Key wordsPM2.5    Water-soluble ions    Ion chromatography
收稿日期: 2018-05-29      出版日期: 2018-12-04
ZTFLH:  R122.7  
通信作者: 曹霞,E-mail:504755603@qq.com   
作者简介: 曹霞,硕士,医师,主要从事卫生理化检验工作
引用本文:   
曹霞, 游钒, 周茂君, 丁建, 雍莉, 胡彬. 成都市大气PM2.5中Cl-、SO42-、NO3-和NH4+浓度分析[J]. 预防医学, 2018, 30(12): 1208-1211.
CAO Xia, YOU Fan, ZHOU Mao-jun, DING Jian, YONG Li, HU Bin. The concentrations of Cl-,SO42-,NO3- and NH4+ in atmospheric PM2.5 in Chengdu. Preventive Medicine, 2018, 30(12): 1208-1211.
链接本文:  
http://www.zjyfyxzz.com/CN/10.19485/j.cnki.issn2096-5087.2018.12.005      或      http://www.zjyfyxzz.com/CN/Y2018/V30/I12/1208
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