硼酸锂晶体谐振式传感器测定有机溶剂中微量水

Determination of microcontent water in organic solvents by lithium tetraborate crystal resonant sensor

采用硼酸锂晶体为压电材料,研制出一种对溶液电导率及介电常数有灵敏频率响应的谐振式传感器,并用于有机溶剂中微量水的快速测定,对二氧六环、乙酸乙酯、正戊醇中水的质量浓度的检测下限分别达到0.5,0.7,1.7mg/L。

A resonance sensor employing lithium tetraborate crystal as piezoelectric material is developed.This sensor has sensitive frequency response to conductivity and permittivity of the liquids.Microcontent water in organic solvents is rapidly determined by the sensor.The determination limits for water in dioxane,ethyl acetate,n-amyl alcohol are 0.5,0.7 and 1.7 mg/L,respectively.