一、前言N-甲基吡咯烷酮(简称N-MP)在作为丁二烯的萃取液时,为了提高其稳定性,降低形成树脂的可能性,并节约能源,其中须加入8～10%的水。因此,N-MP中的水含量须进行准确测定。常采用的测定方法有:蒸馏法、卡尔-费休法、微库仑法、气相色谱法等。其中有的操作繁琐,有的分析周期长,而经典的 I. INTRODUCTION N-methyl pyrrolidone (NMP) is an extract of butadiene, in order to improve its stability, reduce the possibility of resin formation and save energy, which must be added 8 to 10% of water . Therefore, the water content in N-MP must be accurately measured. Commonly used determination methods are: distillation, Karl - Fischer method, microcoulometry, gas chromatography. Some of them are tedious operations, others have long analysis cycles and are classic