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| 顶空进样-气相色谱/质谱联用法测定水中三氯乙醛 |
| Determination of Chloral in Water with Headspace Injection Gas Chromatography/Mass Spectrometry |
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| DOI： |
| 中文关键词: 三氯乙醛 顶空进样 气相色谱/质谱联用法 水质 |
| 英文关键词: Trichloroacetaldehyde Headspace injection Gas chromatography/mass spectrometry Water quality |
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| 中文摘要: |
| 用氢氧化钠处理水样，将水样中的三氯乙醛转化为三氯甲烷，用顶空-气相色谱/质谱联用法间接测定水中三氯乙醛，通过优化试验条件，使该方法在1.00 μg/L～20.0 μg/L之间线性良好，方法检出限为0.12 μg/L。用该方法测定3个质量浓度水平的空白加标样，RSD为2.6%～4.4%，回收率为99.4%～101%。3批实际水样只有废水样检出三氯乙醛，实际水样加标回收率为76.2%～104%。 |
| 英文摘要: |
| Trichloroacetaldehyde (TCA) is apt to form chloroform in water when it reacts with NaOH. Base on this principle, TCA in water was indirectly determined by headspace gas chromatography/mass spectrometry(HS GC/MS). The method had a good linear from 1.00 μg/L to 20.0 μg/L by optimizing the experimental conditions. The method detection limit was 0.12 μg/L. Spiked recoveries of blank sample in three mass concentration addition were measured with the RSDs (n=6) in the range of 2.6% to 4.4% and the recovery 99.4% to 101%. TCA was detected only in waste water in 3 batches practical samples. The spiked recoveries of practical samples ranged from 76.2% to 104%. |
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