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本文研究了钼蓝比色法测定碳酸丙烯酯中微量硫化氢的方法。硫化氢含量在3.4ppm内服从比耳定律,检出限为0.01ppm。在测定范围内回收率均在90％以上。本法平行6次实验结果的标准偏差为0.51(％),变动系数为0.41％。本法可适用于实验室及工厂实样的碳酸丙烯酯中微量硫化氢的测定。
In this paper, molybdenum blue colorimetric method for the determination of trace amounts of propylene carbonate propylene sulfide method. The hydrogen sulfide content obeys Beer’s law at 3.4 ppm with a detection limit of 0.01 ppm. In the determination of the recovery rate of more than 90%. The standard deviation of 6 parallel experiments was 0.51 (%) and the coefficient of variation was 0.41%. This method can be applied to laboratory and factory samples of propylene carbonate in the determination of trace amounts of hydrogen sulfide.