卤水法制硫酸钡产品中的氯、硼含量测定

Determination of chlorine and boron content in barium sulfate made from bittern

卤水法制硫酸钡在生产过程中吸附、包裹了许多无机离子,严重影响了产品的质量与应用。为了及时了解产品性能,提高产品质量,通过大量实验,建立此方法。论述了一种测定硫酸钡中氯、硼两种杂质离子含量的方法。此法准确、精密度高,实测样品中氯和硼的回收率分别为98.2%和102.1%,相对标准偏差(n=5)分别为1.53%和2.22%。测定结果与原子吸收分光光度法测定结果一致,且快速、简便,可作为卤水法制硫酸钡产品中的氯、硼含量测定方法。

Many inorganic ions are absorbed and packed in the product during the production of barium sulfate from bittern,which have seriously influence on the quality and application of BaSO4. In order to know about the performance of the product in time and improve the quality of the product, a method for the determination of chlorine and boron ions content in barium sulfate, which is made from bittern, is introduced. This method is quick and easy operation with high accuracy, the recovery rate of chlorine and boron in the sample can be 98.2% and 102.1% respectively, the relative standard deviation （ n = 5 ） can be 1.53% and 2.22% respectively. The test result is in accord with that determined by atomic absorption spectrophotometry.