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20min,加NaCl添加量4g,样品量10mL.水中乙醛、丙烯醛的最低检出限分别为0.05和0.08mg/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%.
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 NaCl amount of 4 g and the water volume of 10 mL 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 re-covery of acetaldehyde ranged between 84.8% - 109.1% and the recovery of acrolein ranged between 79.2% -108.3%.The relative standard deviations were ranged from 2.4% to 10.7%.
出处
《云南化工》
CAS
2016年第2期31-33,63,共4页
Yunnan Chemical Technology
关键词
顶空气相色谱法
乙醛
丙烯醛
Head space-GC
acetaldehyde
acrolein
surface water
