电感耦合等离子体质谱法测定水中钾、钠、钙、镁的研究

Determination of potassium, sodium, calcium and magnesium in water by inductively coupled plasma mass spectrometry

本文采用电感耦合等离子体质谱仪测定水样中钾、钠、钙、镁,数据结果表明:采用此方法分析结果线性良好,相关系数可达0.9999,检出限分别为0.4~1.3μg/L;测定标准溶液,相对标准偏差在1.2%~4.8%之间,精密度良好;不同类型实际水样的加标回收率范围在94.8%~105%,准确度良好。将测定结果进行比对研究,该方法完全可满足地表水、地下水及低浓度工业废水中钾、钠、钙、镁的测定要求。

Inductively coupled plasma mass spectrometry was used to determine potassium,sodium,calcium and magnesium in water samples.The results show that the analytical results are linear and the correlation coefficient is up to 0.9999.The detection limits are 0.4-1.3μg/L.The standard solution is determined,the relative standard deviation is between 1.2% and 4.8%,and the precision is good;the standard recovery of different types of actual water samples ranges from 94.8% to 105%, and the accuracy is good.The determination results are compared and the method can fully meet the determination requirements of potassium,sodium,calcium and magnesium in different types of water samples.