大气环境中气相和颗粒相上酞酸酯的分析  

Analysis of Particulate and Vapor Phase Phthalate Esters in the Atmosphere.

作　　者：仝青 乌兰 冯沈迎 高春梅 阮玉英 

机构地区：[1]内蒙古环境保护科学研究所,呼和浩特市010010

出　　处：《环境科学》1992年第5期78-81,共4页Environmental Science

摘　　要：本文选用聚氨基甲酸酯泡沫塑料(PUFP)吸附块和玻璃纤维摅膜(GF)构成大气全态采样头,捕集大气中气相和颗粒相中酞酸酯化合物,样品经提取分离后用气相色谱(GC)进行测定。以呼和浩特市居民区相草原对照区为采样点,分析夏冬雨季大气中酞酸酯(DNBP和DEHP)。结果表明,冬季大气气相中,DNBP和DEHP平均浓度为0.46和1.89μg/m^3,夏季为2.19和1.82μg/m^3;大气颗粒物相,冬季平均为1.34和1.66μg/m^3,夏季为0.51和0.36μg/m^3。夏季大气气相酞酸酯含量高,冬季大气颗粒相酞酸酯含量高。草原对照区大气颗粒物上DNBP和DEHP的平均浓度为0.17和0.14μg/m^3,夏季为0.23和0.10μg/m^3。DNBP和DEHP在大气全态中的总含量冬季和夏季较为接近。An air sampler composed of polyurethane foam and glass fibre filter was utilized to simultaneously collect phthalate esters both in the gas phase and on particulates in rhc atmosphere. The collected samples were then extracted, cleaned up and analysed with GC for phthalate esters. The levels of phthalate esters (DNBP and DEHP) in the residential areas of the city of Huhchot in winter and summer were thus determined and compared with those measured on the grasslands. Results show that the average concentrations of gas phase DNBP and DEHP in the city were determined to be 0.46 μg/m3 and 1.89 μg/m3 in the winter and 2.19 μg/m3 and 1.82 μg/m3 in the summer, respectively. While the levels of the two esters deposited on atmospheric particulates in the city were measured to be 1.34 μg/m3 and 1.66μg/m3 in the winter and 0.51μg/m3 and 0.36 μg/m3 in the summer compared with the low levels of 0.17 μg/m3 and 0.14μg/m3 for winter time and 0.23 μg/m3 and 0.1μg/m3 for summer time measured on the grassland.

关 键 词：气相 颗粒相 大气环境 

分 类 号：X831.02[环境科学与工程—环境工程]