沈阳市大气PM_(10)中水溶性无机阴离子的分布特征研究  

Study of Distribution Characteristics of Water Soluble Inorganic Anions in PM_(10) in the Air of Shenyang City

作　　者：庄晓虹[1] 赵冰[1] 马春蕾[2] 喻婷[1] 胡桂娟[2] 

机构地区：[1]辽宁大学环境学院,辽宁沈阳110036 [2]辽宁大学轻型产业学院,辽宁沈阳110036

出　　处：《环境保护科学》2016年第1期95-99,共5页Environmental Protection Science

摘　　要：2014年7月和12月分别对沈阳市大气污染物PM_(10)(可吸入颗粒物)进行采样分析,采样期内PM_(10)浓度全部超过国家一级标准,最大值超出国家二级标准3.3倍。用离子色谱法分析了PM_(10)中的水溶性无机阴离子,结果表明:4种阴离子浓度之和的变化总趋势为7月<12月;各离子浓度的关系为SO_4^(2-)>NO_3^->Cl^->F^-,4种离子浓度均为冬季高于夏季;对PM_(10)及4种阴离子进行相关性分析,得出NO_3^-、SO_4^(2-)浓度与PM_(10)浓度呈显著正相关,是PM_(10)的重要组分,并通过NO_3^-与SO_4^(2-)的质量比得出沈阳市大气污染物中水溶性组分主要来自于固定排放源。As the air pollutant in Shenyang City,PM_（10） was sampled and analyzed in July and December 2014.It was found that the concentrations of PM_（10） during the sampling periods all exceeded the national primary standard seriously,with the maximal exceeding the standard by 3.3 times.Then,ion chromatography was used to study water soluble inorganic anions in PM_（10）.The results showed that the general variation trend of the sum of four kinds of anion concentrations was lower in July than that in December.The concentration of SO_4^（2-） was the highest,followed by NO_3^-,Cl^- and F^- in a descending order.Concentrations of the four ions were all higher in winter than those in summer.Correlation analysis was also carried out towards PM_（10） and the four anions.The concentrations of NO_3^- and SO_4^（2-） were found to be significantly positively related with the concentration of PM_（10） and therefore they were the important components of PM_（10）.By the quality ratio of NO_3^- to SO_4^（2-）,it was concluded that the water-soluble components in the air pollutants in Shenyang were mainly from stationary emission sources.

关 键 词：可吸入颗粒物 水溶性无机阴离子 离子色谱 

分 类 号：X513[环境科学与工程—环境工程]