气相色谱直接进样法测定水中的N-甲基哌嗪-应急监测分析方法

建立了水中N-甲基哌嗪的应急监测分析方法,在3分钟内完成整个分析过程。采用直接进水样的方法,经毛细管柱分离水中的N-甲基哌嗪,用GC/FID测定,以保留时间定性,峰高定量。在浓度范围为8.44～80.32mg/L时,相对标准偏差在1.8％～2.9％之间,标准偏差在0.19～1.5之间。样品的加标回收率可达81％,标准曲线的相关系数为0.9992。检出限为0.08mg/L

Determination of N-methyl piperazine in water by direct injection GC-the emergency monitor analytic method

This is the analytic method for emergency monitoring the N-methyl piperazine in the water. The method completed the whole analytic process in three minutes. The N-methyl piperazine have been determinated by capillary column GC/FID with direct injection method. The sample is qualitatively determinated by retention time and quantitatively determinated by peakheight extend standard method. When the average concentration range from 8. 44mg/L to 80. 32mg/L, the relative deviations range from 1. 8%-2.9% , the standard deviations range from 0. 19 to 1. 5. the recoveries of sample is 81%. Correlation coefficient is 0. 9992. The determination limit is 0. 08mg/L.