| 顶空气相色谱法同时测定地表水中的乙醛、丙烯醛 |
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| 作者单位： | ;1.大理学院农学与生物科学学院;2.大理州质量技术监督综合检测中心 |
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| 摘 要： | 采用顶空气相色谱法测定地表水中乙醛、丙烯醛的含量,优化的顶空条件为:平衡温度80℃,平衡时间20 min,加Na Cl添加量4 g,样品量10 m L。水中乙醛、丙烯醛的最低检出限分别为0.05和0.08 mg/L,乙醛加标回收率为84.8%~109.1%,丙烯醛为79.2%~108.3%;乙醛相对标准偏差为2.4%~8.6%,丙烯醛为5.2%~10.7%。
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| 关 键 词： | 顶空气相色谱法 乙醛 丙烯醛 |
Determination of Acetaldehyde and Acrolein in Surface Water by Headspace Gas Chromatography |
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| Affiliation: | ,College of Agriculture and Bioscienee,Dali University,Dali Quality and Technical Supervision Comprehensive Inspection Center |
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| Abstract: | A method for the determination of acetaldehyde and acrolein in surface water by headspace gas chromatography was studied. As a result,the temperature of 80 ℃,the balance time of 20 min,the Na Cl amount of 4 g and the water volume of 10 m L were chosen as the optimization of headspace conditions. The detection limits was 0. 05 mg / L of acetaldehyde and 0. 08 mg / L of acrolein. The results showed that the recovery of acetaldehyde ranged between 84. 8%- 109. 1% and the recovery of acrolein ranged between79. 2%- 108. 3%. The relative standard deviations were ranged from 2. 4% to 10. 7%. |
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| Keywords: | Head space-GC acetaldehyde acrolein surface water |
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