Patent ID: 9562886
Date: 2017-02-07
CPC Classifications: C07D,G01N

Claim:
1. A method for determining the quantity of lithium ions in blood plasma or serum in a test specimen, comprising contacting the test specimen with a lithium reagent composition comprising a compound having a structure represented by the formula (I): in which all hydrogens bonded to carbons of a tetraphenylporphyrin are replaced by fluorine atoms, a water-miscible organic solvent chosen from dimethylsulfoxide (DMSO), dimethylformamide (DMF) and dimethylacetamide (DMA), and a pH modifier for adjusting pH to a range from pH 5 to pH 12, wherein the tetraphenylporphyrin is dissolved in the water-miscible organic solvent, and measuring coloring of the resulting lithium complex and the resulting spectrum in a wavelength ranging from 530 to 560 nm to calculate the quantity of lithium.