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| 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 |
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| 英文关键词: |
| 基金项目: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） |
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| 中文摘要: |
| 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0 μg/L～100 μg/L时，回收率的控制范围为60%～123%；当样品质量浓度为0 μg/L～20 μg/L时，实际 |
| 英文摘要: |
| 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 studied 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 0 μg/L～20 μg/L. |
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