水和废水中甲醇的测定方法探讨

Study on the determination of methanol in water and wastewater

甲醇作为溶剂在化工工业和实验室中广泛使用,但我国现阶段尚未明确规定甲醇的监测分析方法。本方法采用顶空/气相色谱法测定水和废水中甲醇的浓度,方法最低检出浓度为0.030 mg/L,无溶剂污染,不受乙醇、异丙醇等物质的干扰,结果准确,操作快捷方便,在日常监测任务中有很好的适用性。

Methanol as the solvent is widely used in chemical industry and laboratory,but the monitoring and analysis method of methanol in China has not been clearly defined. In this method,the concentration of methanol in water and wastewater was determined by head space gas chromatography. The minimum detectable concentration was 0. 030 mg / L. The method is clear,not affected by alcohol,isopropanol and other substances. The result in this method is accurate,fast,convenient operation and have good applicability in the daily monitoring tasks.