预浓缩-气质联用法测定高山大气中氯氟烃  

Determination of Chlorofluorocarbons in the Atmosphere of High Mountain with Pre-Concentration-GC/MS

作　　者：张凤菊[1] 金玲仁[1] 李红莉[1] 杨敏敏[2] 王艳[2] 

机构地区：[1]山东省环境监测中心站,山东济南250101 [2]山东大学,山东济南250100

出　　处：《中国环境监测》2016年第3期105-109,共5页Environmental Monitoring in China

基　　金：国家自然科学基金(21177073)

摘　　要：建立了预浓缩-气相色谱/质谱联用技术,同时检测高山大气中二氟二氯甲烷、四氟二氯乙烷、一氟三氯甲烷、三氟三氯乙烷的分析方法。4种物质的检出限分别为0.013、0.022、0.021、0.030μg/m^3,相对标准偏差在5.6%以下,标准曲线相关系数大于0.996,加标回收率为93.2%~98.3%。对庐山大气进行监测,结果表明,庐山大气中4种氯氟烃的浓度均高于武夷山和湖北神龙架大气背景点,庐山大气中CFC-11、CFC-113的浓度接近于泰山和贡嘎山的浓度。A pre-concentration and GC / MS method was established for the simultaneous determination of CFC-12,CFC-114,CFC-11 and CFC-113 in high mountain. The detection limit of CFC-12,CFC-114,CFC-11 and CFC-113 were 0. 013,0. 022,0. 021 and 0. 030 μg / m^3,the relative standard deviation of the method were under 5. 6%,and the correlation coefficient were above 0. 996. Greenhouse gases of Mount Lushan were monitored. In addition,the results indicated four kinds of CFC concentrations of Mount Lushan were generally higher than atmosphere background sites on Mount Wuyi and in the Greater Higgnan Mountains. The concentrations of CFC-11 and CFC-113 measured herein were nearly equal to that measured on Mount Tai and Gongga Mountain.

关 键 词：氯氟烃 预浓缩 GC/MS 高山大气 

分 类 号：X830.2[环境科学与工程—环境工程]