吹扫捕集-GC/MS法测定水中卤代烃的质量控制指标研究  

Research of Quality Control Index for Halogenated Hydrocarbons in Water Determined by Purge and Trap-GC/MS

作　　者：胡冠九[1] 李娟[1] 袁力[1] 夏新[2] 王荟[1] 史啸勇[1] 

机构地区：[1]江苏省环境监测中心,江苏南京210036 [2]中国环境监测总站,北京100012

出　　处：《环境监测管理与技术》2011年第5期50-54,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家水体污染控制与治理科技重大专项基金资助项目(2009ZX07527-003)

摘　　要：采用吹扫捕集-气相色谱/质谱联用法,通过实际样品测试及全国多家实验室测定数据统计两种方法,针对水中三氯甲烷、四氯化碳、溴仿、二氯甲烷1、2,-二氯乙烷、1,1-二氯乙烯、三氯乙烯、四氯乙烯等8种卤代烃的平行样测定相对偏差、空白加标回收率及实际样品加标回收率等3个指标,研究了每种卤代烃的质控指标评价标准,提出其平行样测定允许最大相对偏差应控制为11.6%～20.8%;当空白加标质量浓度为0μg/L～100μg/L时,回收率的控制范围为60%～123%;当样品质量浓度为0μg/L～20μg/L时,实际样品加标回收率的控制范围为46%～164%。Three quality control indexes of eight kinds of halogenated hydrocarbons（ Chloroform, Carbon tetrachloride, Bromoform, Methylene chloride, 1 , 2-Dichloroethane, 1 , 1-Dichloroethylene, Trichloroethylene, Tetrachloroethylene） , including relative bias of duplicates, recovery of blank spike and sample spike, were stud- ied by sample test using purge and trap-gas chromatography-mass spectroscopy, and also by evaluating data collected from many labs national-widely. The quality control index was produced according to every target. The results showed that the maximum relative bias should be within 11.6% -20.8% ; the blank recovery should be within 60% - 123% when the spiking concentration was 0 μg/L - 100 μg/L; the sample recovery should be within 46% - 164% when the sample concentration was 0μg/L -20μg/L.

关 键 词：卤代烃 质量控制指标 吹扫捕集 气相色谱/质谱联用法 水质 

分 类 号：O657.63[理学—分析化学]