【摘要】 用盐酸加热溶解四氧化三锰样品 ,加入镧盐和锶盐混合释放剂 ,消除 70 %左右基体锰的干扰 ,直接测定其中钙、镁含量 ,样品加标回收率为 96 8%～ 98 2 % ,相对标准偏差为 2 4%～ 3 2 % .更多还原

【Abstract】 The sample of Mn 3O 4 is digested with HCl,then La salt and Sr salt are added as release agents to offset 70 percent of influence of matrix Mn,the contents of calcium and magnesium are determined directively which achieve favorable result.This method proved to be convenient,rapid and exact.The recovery of method is 95.8%～98.7% ,the relative standard deviation is 2.43%～3.28%.更多还原