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Updated: May 19, 2026

Preparation of Food Samples Using Homogenization and Microwave-Assisted Wet Acid Digestion for Multi-Element Determination with ICP-MS
Published on: December 22, 2023
[Determination of lithium and strontium at high concentration by ICP-AES]
Jing Zhao1, Hai-Jun Li, Bai Sun
1Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China. fenghuangsheshou@163.com
Abstract:
The concentrations of lithium and strontium of highly concentrated lithium-strontium mixed solution were determined simultaneously by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). After considering total salinity, relation coefficient and intensity at different wavelengths of lithium and strontium respectively, the determination wavelength was chosen for lithium and strontium separately. Using the determined wavelength, the result varies in terms of acid effect, equipment operating parameters and total salinity in the mixed solution. When the total salinity was in the range of 0.20%-0.60%, the linear correlation coefficient of Li and Sr was better than 0.999 9. After optimizing the instrument parameters, the standard solutions relative errors were within +0.59%-0.66%, and the samples recoveries were within 99.14%-100.4%. This method is reliable due to stability and good recurrence. It can be used to determine high concentration of lithium and strontium ions in the lithium-strontium mixed solution accurately and rapidly.
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