Abstract
In a 0.2 mol l–1 acetic acid–6.6 × 10–3 mol l–1 oxalic acid medium at 20 °C, 5 × 10–3 mol l–1 chlorpromazine hydrochloride (CPH) was oxidized by 5 × 10–2 mol l–1 H2O2 with the reaction being catalysed by nitrite ions. The maximum absorbance occurs within 2–4 minutes of the start of the oxidation reaction and is proportional to the nitrite concentration; this allows the determination of nitrite in the range 3–1500 ng ml–1. Reagent concentrations, except for CPH, have little effect on the determination. The effects of experimental conditions and foreign ions are described. The interference of iron(III) can be masked by oxalic acid and ethylenediaminetetraacetic acid. The method was applied to the determination of nitrite in rain and river water.
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.
