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.
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)
