文献类型：期刊文献

中文题名：上海市大气总汞季节变化特征及与气象条件的关系

英文题名：Total Gaseous Mercury in Ambient Air of Shanghai:Its Seasonal Variation in Relation to Meteorological Condition

作者：张艳艳[1];修光利[1];张大年[1];张美根[2];张仁健[2]

机构：[1]国家环境保护化工过程环境风险评价与控制重点实验室,华东理工大学,上海200237;[2]中科院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京100029

年份：2012

卷号：35

期号：1

起止页码：155

中文期刊名：环境科学与技术

外文期刊名：Environmental Science & Technology

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：上海市自然科学基金资助(08ZR1406400);中科院大气物理研究所大气边界层物理和大气化学国家重点实验室开放基金(LAPC-KF-2008-13);上海市重点学科项目(B506)

语种：中文

中文关键词：大气总汞;季节性变化;气象条件,反向轨迹;上海市

外文关键词：total gaseous mercury（TGM）; season variation; meteorological parameter; back trajectory; Shanghai

摘要：2008年到2010年对上海市西南部大气中总汞(TGM———Total Gaseous Mercury)的污染水平进行监测,结果表明TGM日均浓度为ND^57.23ng/m(3(7.79±3.29)ng/m)3。TGM呈现出一定的季节性变化特征,浓度最高的是秋季,然后依次是冬季、春季、夏季,平均浓度分别为(9.30±2.48)、(8.32±2.79)、(7.78±2.33)、(2.16±3.29)ng/m3。TGM浓度受东南风向影响最大,其次为西北和东北风向。在置信水平为95%的情况下,TGM浓度与日平均温度呈正相关性,而与日温差、相对湿度、日相对湿度差、风速无显著相关性。但TGM浓度分别与日均O3浓度和NO2浓度均呈显著正相关。利用HYSPLIT_4模型对TGM浓度高值与低值几天的空气气团来源轨迹进行反演,结果发现高低浓度日的气团来源略有差别,总体上看,冬季、春季和秋季受北方气团影响较大,夏季则受我国东部海域影响,具体的局部和长距离输送的贡献需要进一步研究。
This paper presents a set of total gaseous mercury（TGM） concentration data collected during the period from 2008 to 2010 in southeast Shanghai,showing the changes of TGM concentrations due to seasonal climatic factor.According to the observation,the southeastern wind had a larger influence on gaseous TGM,the next was northwestern and northeastern wind,and factors such as daily mean temperature,ozone and NO2 were positively correlative to the TGM concentration in southeast part of Shanghai.Besides,5-day air mass back-trajectories were given by the HYSPLIT-4 Model during the days with high or low TGM concentrations.TGM was mainly affected by the air mass form north China in winter,spring and fall,while in summer was influenced by the ocean to the east of Shanghai.