化学试剂水分测量方法研究进展

Progress on the Measurement Methods for the Water Content in Chemical Reagents

水分影响化学试剂的质量,因此水分的快速、准确测定是化学试剂分析中共性的关键问题。卡尔·费休滴定法和干燥失重法是常用的两种水分测量方法;气相色谱法、近红外光谱法和微波吸收法等新方法也可用于水分测定。综述了上述测量技术在化学试剂水分中的应用情况,并对其发展趋势进行了展望。

Fast and accurate determination of water content is a common and key point for the analysis of chemical reagents owing to the effect of water on their quality. Two methods including the Karl Fischer titration and the thermal gravimetry are most widely used for the determination of water content. Furthermore, some novel methods, such as the gas chromatography,near infrared （IR） spectrometry and the microwave resonance sorption,are introduced to measure the water content. The present work reviews the application of technics above in chemical reagents and forecasts the trend of their development.