Fast and Reliable Determination of Alkali and Alkaline-earth Elements in Biological Fluids Using Laser-induced Breakdown Spectroscopy

This work is focused on the development of a quantitative assay for the determination of Na, K, Ca, Mg, and Li in blood serum, urine, and saliva by a simple procedure using single pulse laser-induced breakdown spectroscopy (LIBS). All analyses were performed on samples in the form of homogeneous glass-supported polyacrylamide gel films containing Rb and Ba as internal standards. No additional…