自动顶空毛细柱气相色谱法测定废水中甲醇  

Determination of Methanol in Waste Water by Automatic Headspace Capillary Gas Chromatography

作　　者：宋环宇 

机构地区：[1]宜昌市环境保护监测站,湖北宜昌443000

出　　处：《环境监控与预警》2015年第3期25-27,共3页Environmental Monitoring and Forewarning

摘　　要：采用自动顶空气相色谱法,以顶空瓶80℃,30 min平衡时间,4 g氯化钠的条件下,用气相色谱法测定其含量。结果表明,ρ（甲醇）在1.0~12 mg/L范围内线性良好,加标回收率为102%-105%,检出限为0.11 mg/L,RSD为3.6%。此法可在30 min之内完成废水中甲醇的测定,缩短样品的前处理时间。The content of methanol was determined by automatic headspace gas chromatography under the condition of 80 ℃,30 min balance time,and 4g sodium chloride in the top empty bottle.The results showed that the linearity of methanol was in the range of 1 .00 -12.0 mg /L,and the recovery was between 102% and 105%.The detection limit was 0.1 1 mg /L,and the RSD was 3.6%. This method for determination of methanol in the waste water could complete the whole procedure within 30 minutes,which greatly shortened the time of the sample pretreatment.

关 键 词：甲醇 气相色谱法 自动顶空 

分 类 号：O657.71[理学—分析化学] X832[理学—化学]