设为首页 加入收藏 登录旧版
武汉市秋季PM2.5中硫酸盐、硝酸盐理化特征及影响因素
Physical and Chemical Characteristics of Sulfate and Nitrate in PM2.5 and Their Influencing Factors during Autumn in Wuhan
投稿时间:2017-08-05  修订日期:2017-12-23
DOI:10.19316/j.issn.1002-6002.2018.05.09
中文关键词:  PM2.5  硫酸盐  硝酸盐
英文关键词:fine particle  sulfate  nitrate
基金项目:国家重大科学仪器设备开发专项"大气细颗粒物化学成分在线监测设备研制与应用示范"(2013YQ060569)
作者单位
段佳鹏 武汉市环境监测中心, 湖北 武汉 430022 
胡世祥 武汉市环境监测中心, 湖北 武汉 430022 
李蒲 武汉市环境监测中心, 湖北 武汉 430022 
唐经礼 武汉市环境监测中心, 湖北 武汉 430022 
杨建虎 河北先河环保科技股份有限公司, 河北 石家庄 050000 
摘要点击次数: 59
全文下载次数: 
中文摘要:
      为了解武汉市秋季PM2.5中硫酸盐、硝酸盐理化特征,2016年9-11月利用热还原法在线连续监测分析系统对此进行了采样分析,并同步收集气象因子和离子色谱方法监测结果。结果表明,硫酸盐、硝酸盐的热还原分析方法与离子色谱法的相关系数分别为0.88、0.94;PM2.5中硫酸盐、硝酸盐的水溶性部分占比达92.5%,难溶性部分为7.5%;空气质量为优、良和轻度污染时,硫酸盐、硝酸盐与PM2.5的占比分别为45%、42%、45%;硫酸盐、硝酸盐在降水日和非降水日平均质量浓度分别为(19.6±18.5)μg/m3和(31.0±9.1)μg/m3;硝酸盐与硫酸盐的质量比为1.1,高于国内其他城市,与武汉市机动车保有量大幅增加有关。
英文摘要:
      In order to study the physical and chemical characteristics of sulfate and nitrate in PM2.5,thermal reduction method on-line continuous monitoring and analysis system was used to sample and analysis,the meteorological factors and monitoring results of ion chromatography were synchronously collected in September to November,2016. The results showed that the correlation coefficients of sulfate,nitrate by thermal reduction method and ion chromatography were 0.88 and 0.94,respectively. The aqueous soluble in PM2.5 accounted for 92.5%,and insoluble component was 7.5%; When air quality was excellent,benign and mild pollution, sulfate and nitrate accounted for 45%, 42% and 45% in PM2.5,respectively. Mass concentration of sulfate and nitrate in precipitation days and non precipitation days was (19.6±18.5)μg/m3, (31.0±9.1)μg/m3. the mass ratio of nitrate and sulfate was 1.1, higher than that of other cities in China, which was related to the substantial increase in vehicle ownership in Wuhan.
查看全文  查看/发表评论  下载PDF阅读器