Direct Determination of Impurity Elements in High Purity Lithium Hexafluorophosphate Dissolved with Ethyl Alcohol by Inductively Coupled Plasma Mass Spectrometry
10.3724/SP.J.1096.2014.40137
- VernacularTitle:有机溶剂溶样-电感耦合等离子体质谱法直接测定六氟磷酸锂中26种杂质元素
- Author:
Hongwei LIU
;
Ping ZHANG
;
Hanxiang HU
- Publication Type:Journal Article
- Keywords:
Inductively coupled plasma mass spectrometry;
Lithium hexafluorophosphate;
Absolute ethyl alcohol;
Collision reaction cell;
Impurity elements
- From:
Chinese Journal of Analytical Chemistry
2014;(6):913-917
- CountryChina
- Language:Chinese
-
Abstract:
An inductively coupled plasma mass spectrometry ( ICP-MS) was developed for the direct determination of Be, Na, Mg, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Zr, Mo, Sr, Cd, Ba, Pd, Ag, Sn, Au and Pb in lithium hexafluorophosphate. The sample was dissolved with absolute ethyl alcohol to analyze the above 26 impurity elements in the solution by ICP-MS. The condensation and deposition of high concentrations of carbon in mass cone interface and ion lens, which will decrease the sensitivity of element analysis, can be avoided effectively by introducing O2 to plasma. The mass spectral interferences of polyatomic ions to analytes were corrected by collision reaction cell (CRC). The matrix matching method was used to corrected matrix effect. Satisfactory linearity of each working curve of 26 impurity elements was obtained. The correlation coefficients being over 0. 9995, the detection limits for the investigated elements were in the range of 0. 6-32 ng / L, the relative standard deviation of each element within 2. 5% -7. 3% , and the recovery of each element at 90. 6% -108. 6% . The method had been applied to the determination of trace elements in lithium hexafluorophosphate with satisfactory results.
