电感耦合等离子体发射光谱在测定水氯镁石中钾、钠、钙、硫含量的应用研究

Application of Inductively Coupled Plasma Emission Spectroscopy in Determination of Potassium,Sodium,Calcium and Sulfur in Bischofite

采用标准曲线法,建立了ICP-AES同时测定水氯镁石中钾、钠、钙、硫元素的分析方法方法。进行加标回收试验对方法的准确度进行验证,实验结果表明各待测元素的加标回收率为95.40%~100.20%。进行精密度实验对方法的精密度进行验证,实验结果表明相对标准偏差RSD%为1.02%~6.12%。进行系列标准溶液的曲线设计,在选定波长下标准曲线的相关系数均大于0.999。通过对空白溶液进行分析,确定方法的检出限和测定下限。方法简单可靠、准确度高,精密度好。

A method for ICP-AES simultaneous determination of potassium,sodium,calcium and sulfur in bischofite was established by standard curve method.The accuracy of the method was verified by standard-added recovery test,the results showed that the recovery rate of each element was 95.40%~100.20%.Carry out precision experiments to verify the precision of the method,experimental results showed that the relative standard deviation RSD is 1.02%~6.12%.Curve design of a series of standard solutions,the correlation coefficients of the standard curves at the selected all more than 0.999.The detection limit and the lower limit of the method were determined by analyzing the blank solution.The method is simple,reliable,accurate and precise.