工业废水中微量甲醇及乙腈的测定  

Determination of traces of methanol and acetonitrile in industrial waste water

作　　者：周发海 ZHOU Fahai(Henan Longyu Coal Chemical Co.Ltd.,Yongcheng 476600,Henan Province)

机构地区：[1]河南龙宇煤化工有限公司,河南永城476600

出　　处：《氮肥技术》2024年第5期33-36,共4页Nitrogenous Fertilizer Technology

摘　　要：气相色谱法测定工业废水中的微量甲醇及乙腈含量,采用分流模式进样,DB-WAX毛细管色谱柱在柱箱程序升温条件下分离工业废水中各组分,进入氢火焰离子化检测器燃烧测定,外标法定量。通过大量试验测试,甲醇的回收率96.77%~97.78%,最低检出限为1 mg/kg。乙腈的回收率101.92%~102.54%,最低检出限为1 mg/kg,此方法的重复性好,准确度高,操作方便,分析速度快。The determination of trace methanol and acetonitrile in industrial waste water was carried out by gas chromatography,using split-flow mode injection,DB-WAX capillary column in the column box under the condition of programmed temperature rise to separate the components of industrial waste water,and then into the combustion of hydrogen flame ionization detector for determination,and the quantification of external standard method.Through a large number of experimental tests,the recoveries of methanol ranged from 96.77%to 97.78%with the lowest detection limit of 1 mg/kg,and the recoveries of acetonitrile ranged from 101.92%to 102.54%with the lowest detection limit of 1 mg/kg,which demonstrated the good reproducibility and accuracy of the method,convenient operation and fast analysis speed.

关 键 词：气相色谱仪 甲醇 乙腈 沉淀 校正曲线 效果 

分 类 号：X832[环境科学与工程—环境工程]