【摘要】 在干燥气氛中准确称取1g(精确至00001g)的LiPF6样品,并用适量的碳酸二甲酯(DMC)进行溶解,再经过适当的处理后,用ICPAES仪测定样品溶液中铍、铜、铅、钙、锆、钴、镁、钒、钛、钼、镍、锰、锶、锌、钾、铝、钡、镉、铁、铬、钠等21种杂质元素的含量。结果表明,21种元素的检出限在0106～7290ng·mL-1之间,加标回收率为933%～1021%,11次测定的RSD小于356%。方法操作方便,分析速度快,结果准确。方法已用于LiPF6生产厂家的产品分析,完全满足要求。更多还原

【Abstract】 One gram (±0.000 1 g) of lithium hexafluorophosphate was weighed exactly under dry atmosphere and was dissolved with an adequate amount of dimethyl carbonate(DMC). After the sample solution was pretreated with a series of methods, Be, Cu, Pb, Ca, Zr, Co, Mg, V, Ti, Mo, Ni, Mn, Sr, Zn, K, Al, Ba, Cd, Fe, Cr and Na were determined by ICP-AES. The results show that the recoveries of standard addition were 93.3%-102.1%, and the relative standard deviations(n=11)were 0%-3.56%. The method is efficient, accurate and easy to operate. It has been applied to the determination of lithium hexafluorophosphate products with satisfactory results.更多还原