上海市漕河泾地区大气颗粒物中痕量元素溴、碘的污染特征  

Pollution characteristics of bromine and iodine as trace element in atmospheric particles in Shanghai Caohejing region

作　　者：吴晓伟[1] 高运川[1] 郭亚琦[1] 吴勣[1] 

机构地区：[1]上海师范大学生命与环境科学学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2009年第2期203-209,共7页Journal of Shanghai Normal University(Natural Sciences)

摘　　要：于2006年4、7、10月及2007年1月在上海师范大学旅游学院大楼楼顶使用大流量采样器采集了代表四季的大气颗粒物TSP、PM10样品，采用微波消解电感耦合等离子体质谱法测定样品中痕量元素溴、碘的含量．大气颗粒物中溴、碘的体积浓度表现明显的季节特征，TSP及PM10中溴浓度在春季最高，冬季最低；TSP及PM10中碘浓度在冬季最高，夏季最低．TSP中Br／I的比值为1．16—103．33，PM10中Br／I的比值为0．18—49．50，均呈现夏季高而冬季低的季节特征，且与颗粒物中碘的含量以及大气中二氧化硫和氮氧化物浓度呈负相关．TSP （Total Suspended Particulate） and PM10 were collected with large flux sampler respectively in April, July, October, 2006 and January, 2007 as samples of four seasons on the roof of Tourism Building at Shanghai Normal University. The sampies were analyzed to determine the content of trace element, bromine and iodine, with inductively coupled plasma mass spectrometry through microwave digestion. Concentration of bromine and iodine in atmosphere particle represented seasonal characteristics of clear. The concentration of bromine in TSP and PM10 was the highest in spring and lowest in winter, but iodine concentration was the highest in winter and the lowest in summer. The ratio of Br and I in TSP was 1.16- 103.33, and the ratio of Br and I in PM10 was 0.18 -49.50, which both all showed seasonal characteristics, e.g. the ratio was higher in summer, and lower in winter, and the iodine content in particle was negative correlation with the concentration of and the concentration of SO2 and NO, in atmospheric particles.

关 键 词：大气颗粒物 上海 溴 碘 

分 类 号：X131.1[环境科学与工程—环境科学]