Abstract
A method for the determination of trace amounts of lithium at the ppb level has been described based on the reaction of lithium(I) with 1,4-dihydroxyanthraquinone (quinizarin) in alkaline medium, extraction into tributyl phosphate (TBP) and measurement of the fluorescence of the organic phase. A linear calibration was found in the concentration range of 9-250 ppb of lithium in aqueous solutions (lambda(exc)=590 nm, lambda(em)=670 nm) with a RSD of 2.7% for 100 ppb of lithium. After a prior treatment with potassium carbonate the method is highly specific for the analysis of lithium in presence of other inorganic ions. The proposed procedure has been applied for the determination of lithium in mineral waters, drugs and vegetables.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
