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%。
【英文摘要】
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. ...
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