| 武汉市冬季灰霾期PM2.5中水溶性无机离子的特征 |
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| 引用本文： | 蒋惠梦,肖寒,宋河,祝嘉欣,彭瑾,成海容,王祖武.武汉市冬季灰霾期PM2.5中水溶性无机离子的特征[J].南京气象学院学报,2018,10(5):590-598. |
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| 作者姓名： | 蒋惠梦 肖寒 宋河 祝嘉欣 彭瑾 成海容 王祖武 |
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| 作者单位： | 武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079,武汉大学 资源与环境科学学院, 武汉, 430079 |
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| 基金项目： | 国家重点研发计划（2017YFC0212603，2016YFC0200905）；武汉市2013年重大科技攻关专项“武汉市大气灰霾成因与来源研究” |
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| 摘 要： | 2018年1月，利用颗粒物采样器采集武汉市大气PM2.5样品并进行水溶性无机离子（F-、Cl-、NO3-、SO42-、Na+、NH4+、K+、Mg2+、Ca2+）的分析.结果表明，NO3-、SO42-、NH4+是PM2.5中最主要的3种水溶性无机离子，除Mg2+与Ca2+外，PM2.5与WSⅡs （水溶性无机离子）之间的相关性显著，且移动源贡献占主导地位.阴阳离子平衡表明武汉市冬季灰霾期PM2.5呈中性或弱酸性.通过混合单粒子拉格朗日综合轨迹模式模拟并采用分层聚类得出了4种主要的后向气流轨迹及相应的PM2.5和水溶性离子浓度，结果表明区域传输对此次灰霾期影响较大.
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| 关 键 词： | PM2.5 水溶性无机离子 灰霾期 后向轨迹 |
| 收稿时间： | 2018/8/5 0:00:00 |
Characteristics of water-soluble inorganic ions in PM2.5 during a winter haze episode in Wuhan city |
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| JIANG Huimeng,XIAO Han,SONG He,ZHU Jiaxin,PENG Jin,CHENG Hairong and WANG Zuwu.Characteristics of water-soluble inorganic ions in PM2.5 during a winter haze episode in Wuhan city[J].Journal of Nanjing Institute of Meteorology,2018,10(5):590-598. |
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| Authors: | JIANG Huimeng XIAO Han SONG He ZHU Jiaxin PENG Jin CHENG Hairong and WANG Zuwu |
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| Institution: | School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079,School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079,School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079,School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079,School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079,School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079 and School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079 |
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| Abstract: | Atmospheric PM2.5 samples were collected by particulate matter samplers and the concentrations of water-soluble ions (F-,Cl-,NO3-,SO42-,Na+,NH4+,K+,Mg2+,and Ca2+) were analyzed in January 2018 in Wuhan city.The results show that NO3-,SO42-,and NH4+ are the major water-soluble inorganic ions in PM2.5.Moreover,the correlation between PM2.5 and water-soluble ions is significant,except for Mg2+ and Ca2+,and mobile sources play a dominant contributor role.The balance of anions and cations shows the PM2.5 is neutral or weakly acidic.Four major back air mass trajectories and corresponding concentrations of PM2.5 and water-soluble inorganic ions were obtained by a hybrid single-particle Lagrangian-integrated trajectory model and hierarchical clustering.The results indicate that regional transport had a considerable influence on this haze episode. |
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| Keywords: | PM2 5 water-soluble inorganic ions haze episode back trajectory |
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