离子色谱法检测五硫化二磷中硫和磷的含量

Determination of Phosphorus Pentasulfide Content by Ion Chromatography

本文建立了一种检测五硫化二磷中硫和磷含量的离子色谱分析方法。五硫化二磷与过氧化氢-氨水溶液反应,硫被氧化为硫酸根,磷与水反应生成磷酸根,硫和磷的含量按硫酸根和磷酸根摩尔质量折算。试验结果表明,硫和磷的线性相关系数分别为0.9996和0.9994,变异系数分别为0.122%和0.070%,平均回收率分别为99.7%和99.8%。

An ion chromatographic method for the determination of sulfur and phosphorus in phosphorus pentasulfide was developed.Phosphorus pentasulfide reacts with hydrogen peroxide ammonia aqueous solution,sulfur was oxidized to sulfate radical,and phosphorus reacts with water to form phosphoric radical,and converts the content of sulfur and phosphorus back to the mass of sulfate and phosphate after quantification.The test results showed that the linear correlation coefficients of sulfur and phosphorus were 0.9996 and 0.9994 respectively,and the coefficient of variation were 0.122% and 0.070% respectively,and the average recovery rates were 99.7% and 99.8% respectively.