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1.00μg/L^20.0μg/L之间线性良好,方法检出限为0.12μg/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%。
Trichloroacetaldehyde( TCA) is apt to form chloroform in water when it reacts with Na OH. 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 recovery99. 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%.
出处
《环境监测管理与技术》
CSCD
2016年第3期48-51,共4页
The Administration and Technique of Environmental Monitoring
关键词
三氯乙醛
顶空进样
气相色谱/质谱联用法
水质
Trichloroacetaldehyde
Headspace injection
Gas chromatography / mass spectrometry
Water quality