Abstract
The spectrophotometric determination of vanadium using the catalytic oxidation of chlorpromazine (CPH) with bromate was sensitized in the presence of sodium tartrate (TART) as an activator. The red oxidation product of CPH was monitored at 525 nm within a 1 min reaction time. Vanadium was determined by the measurement of its oxidation rate. The detection limit was 0.2 ng cm–3 using optimized reaction conditions of 5 × 10–4 mol dm–3 CPH, 5 × 10–3 mol dm–3 KBrO3, 0.1 mol dm–3 TART and 0.35 or 0.5 mol dm–3 H3PO4 at 25 °C. The calibration graph was linear up to 150 ng cm–3 VV or VIV. The interferences from Br–, I–, S2– and NO2– were eliminated by the addition of AgI and methanol. The proposed method was successfully applied to the determination of vanadium in rain and river waters.
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.
