![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Summary
A simple and specific spot-test for lithium based on a fluorescent reaction betwen Li+ ion and Quinizarin in alkaline medium is described. The resulting compound is extracted in TBP, and fluorescence is observed in the organic phase under illumination with a UV lamp at 360 nm. The sensitivity of the test is 0.1 μg.cm−3. Applications of the test for lithium include the corresponding cation groups using the H2S and Na2CO3 systematic schemes of analysis; and directly in synthetic mixtures of inorganic ions, mineral water, drugs, dietetic products and blood serum.