Abstract
A sensitive and selective sub-stoichiometric isotope dilution method for the determination of trace amounts of thallium is described. The method is based on the extraction of the ion-association complex with a sub-stoichiometric amount of Victoria Blue B into toluene from 0.5 mol l–1 HCI. The β activity of thallium-204 was measured by liquid scintillation counting. The counting efficiency was found to be 95%. The calibration graph was linear in the range 0–4 µg of TlIII in a final volume of 30 ml. The method is sensitive down to 0.2 µg of TlIII in a final volume of 30 ml. The interferences of HgII, SbIII, AsIII and MoVI were overcome by collecting thallium on PbS. The method was found to be useful for the determination of thallium in flue dust, zinc ore, zinc base die castings, rock samples, cadmium turnings and cabbage leaf samples.
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.
