摘要
基于三氯乙醛溶于水后形成水合三氯乙醛,在碱性溶液中与OH-发生卤仿反应分解为氯仿和甲酸盐的原理,采用离子色谱法检测甲酸浓度,从而计算出水样中三氯乙醛浓度。方法线性良好,检出限为0.007 mg/L,检测上限为100 mg/L,标准溶液平行测定的RSD<3%,加标回收率为99.7%,适用于不含甲酸水样中三氯乙醛的测定。
Based on a principle,which trichloroacetaldehyde in water formed chloral hydrate and then the chloral hydrate with OH-was decomposed into chloroform and formate in alkaline solution,concentration of formic acid was measured by ion chromatography to calculate trichloroacetaldehyde concentration in the water sample.Linearity of calibration curve of the method was good,detection limits 0.007 mg/L,upper limits of concentration 100 mg/L,RSD of replicate samples of standard solution 3%,spiked recovery 99.7%.The method was suitable for determination of trichloroacetaldehyde in water which did not contain formic acid.
出处
《环境监测管理与技术》
2012年第3期69-71,共3页
The Administration and Technique of Environmental Monitoring
关键词
三氯乙醛
甲酸
离子色谱法
水质
Trichloroacetaldehyde
Formic acid
Ion chromatography
Water quality
