ICP-AES法测定硝酸钾中钙、镁、硫  

Determination of Calcium,Mgnesium and Sulfur in Potassium Nitrate by ICP-AES

作　　者：罗稳[1] 杨三妹[1] 刘雨星[1] 邹娟[1] 杨清[1] 

机构地区：[1]化工部长沙设计研究院研发中心,湖南长沙410116

出　　处：《盐业与化工》2015年第9期14-16,共3页Jounral of Salt and Chemical Industry

摘　　要：实验建立一种采用电感耦合等离子体原子发射光谱仪(ICP-AES)测定硝酸钾中钙、镁、硫含量的方法。样品经过简单稀释后即可测试,元素检出限为0.04 mg/L^0.38 mg/L,加标回收率为95.04%~104.76%,相对标准偏差RSD<3.3%,方法简单快捷,精密度好,准确定高,适用于工农业用硝酸钾中钙、镁、硫的测定。A method was developed to determine Ca,Mg and S in potassium nitrate by ICP - AES. The sample can be determined after simply diluting with water. The limit of element detection was O. 04 mg/L -0.38 mg/L, the recovery was between 95.04% and 104.76% , and the relative standard deviation was less than 3.3%. The method was simply and rapid with great precision and high accuracy, which can be used to analyze Ca, Mg and S in potassium nitrate.

关 键 词：等离子体发射光谱法 硝酸钾 钙 镁 硫 

分 类 号：TQ131.13[化学工程—无机化工]