杭州市环境空气中二噁英类物质检测与分析  

Detection and Analysis of Dioxins in Ambient Air of Hangzhou

作　　者：巩宏平[1] 刘劲松[1] 潘荷芳[1] 朱国华[1] 王玲[1] 杨寅森[1] 张珺[1] 

机构地区：[1]浙江省环境监测中心,浙江杭州310015

出　　处：《环境监测管理与技术》2012年第2期27-30,共4页The Administration and Technique of Environmental Monitoring

摘　　要：为了解二噁英类物质(PCDD/Fs)在环境空气中污染现状及不同季节不同时段浓度、组成和存在形式等的变化情况,于夏、冬两季对杭州西湖区空气中PCDD/Fs进行了采样分析。结果表明,空气中PCDD/Fs毒性当量浓度与国内其他城市(北京、上海、广州)相近,夏、冬两季空气中PCDD/Fs质量浓度和毒性当量浓度分别为4.92 pg/m3、0.34 I-TEQ pg/m3和4.51 pg/m3、0.40 I-TEQ pg/m3,夏季PCDD/Fs毒性当量浓度略低于冬季;在分时段采样检测结果中,晚间空气中PCDD/Fs质量浓度和毒性当量浓度均高于白天空气中的PCDD/Fs浓度;夏季样品中TCDD/Fs、PeCDD/Fs主要以气相的形式存在,HpCDD/Fs、OCDD/F主要以颗粒相的形式存在,冬季样品中PCDD/Fs主要以颗粒相形式存在。The dioxins in ambient air had been detected for their daily and seasonal changes of concentration and structure during summer and winter in Hangzhou urban area.The results indicated that PCDD/Fs I-TEQ concentration in the air was equal to that of other cities（Beijing,Shanghai and Guangzhou）.Concentration of PCDD/Fs in summer and winter was 4.92 pg/m3（0.34 I-TEQ pg/m3）and 4.51 pg/m3（0.40 I-TEQ pg/m3）respectively.The I-TEQ concentration of summer was lower than that of winter.The PCDD/Fs concentration（I-TEQ concentration） in night was higher than that of day in the area.In summer,the most TCDD/Fs and PeCDD/Fs tend to partition gas phase,and,HpCDD/Fs and OCDD/F tend to partition particle phase.The most PCDD/Fs tend to partition particle phase in winner.

关 键 词：二噁英类物质 环境空气 气相/颗粒相分配 杭州 

分 类 号：X831[环境科学与工程—环境工程] O657.63[理学—分析化学]