上海大气颗粒物中溴、碘浓度水平的影响因素  

Influencing Factors of Bromine and Iodine Concentration Levels in Atmospheric Particulates in Shanghai

作　　者：高运川[1,2] 吴晓伟[2] 孙明星[3] 高勤芬[4] 刘勇弟[1] 

机构地区：[1]华东理工大学资源与环境工程学院环境工程系,上海200237 [2]上海师范大学生命与环境科学学院环境工程系,上海200234 [3]上海市出入境检验检疫局,上海200135 [4]浙江省质量技术监督检测研究院,浙江杭州310013

出　　处：《环境科学与技术》2010年第12期152-155,共4页Environmental Science & Technology

摘　　要：统计分析了2008年采样期间大气颗粒物TSP和PM10中溴、碘浓度水平与气象条件和气态污染物SO2、NO2的关系。结果表明,风向为向岸流时,大气中TSP、PM10浓度以及颗粒物中溴、碘的浓度均低于离岸流时的数值;在各气象因素中,影响颗粒物中溴、碘浓度的主要气象因素为风向、气压和气温,风速和相对湿度的影响较小;颗粒物中溴、碘的浓度水平随大气中SO2、NO2浓度的上升而上升,颗粒物中碘与SO2、NO2呈显著正相关,而颗粒物中溴呈较弱的正相关性;当空气质量恶化时,PM10中Br、I浓度增大,而Br/I比值降低,城市大气中污染物质之间的化学反应对颗粒物中Br/I的比值有一定影响。Aerosol samples including TSP and PM10 particulate were collected in 2008 to analyze the concentration levels of trace elements Br and I. Statistical analysis was done to investigate the relationship between bromine and iodine concentration levels with gaseous pollutants such as SO2 and NO2 as well as meteorological conditions. Results showed that when wind flowed to the shore,the concentrations of TSP and PM10,particulate bromine and particulate iodine were lower than values in the offshore flow. The wind ...

关 键 词：大气颗粒物 溴 碘 上海 

分 类 号：X513[环境科学与工程—环境工程]