A Spectrophotometric kinetic method for estimation of cadmium in trace level of concentrations

A Spectrophotometric kinetic method for estimation of cadmium in trace level of concentrations

Registration ID: IJNRD_212571

Published ID: IJNRD2401284

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swarn lata bansal , sanjay asthana

spectrophotometer, kinetics, oxidation, cadmium, ammonium sulphite

A method for the estimation of cadmium in catalytic concentrations (2x 10-7 to 2x 10-5 M) had been developed by measuring its catalytic effect on the auto oxidation rate of ammonium sulphite. Measurements have been done on the homogenous reaction rates by the thermal-flow method. The rate of reaction is followed by monitoring the temperature change along the flow path by sensitive thermocouples and the degree of conversion is calculated from the temperature change and the known heat of reaction. On the basis of the experimental results for the catalysed reaction, the following rate expression is derived: -d[O2]/ dt = k’[O2]0 [SO2]3/2[ cd+2]1/2 Where k’ is rate constants of intermediate steps involving free radicals. This simple dependence f rate on the Cadmium concentration leads of developing a kinetic method for estimating Cadmium concentration from its catalytic effect on this particular reaction. For a fixed initial [SO32-]= 0.06 M and [O2]= 0.002M the plot of rate of oxidation versus Cadmium concentration is linear with a slop of 0.05 for Cadmium concentration varying from 2x 10-7 M to 2x10-5M. The method is sensitive up to 10-7M concentration and the maximum error is approximate 3.4%.

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"A Spectrophotometric kinetic method for estimation of cadmium in trace level of concentrations", IJNRD - INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT (www.IJNRD.org), ISSN:2456-4184, Vol.9, Issue 1, page no.c672-c677, January-2024, Available :https://ijnrd.org/papers/IJNRD2401284.pdf

Volume 9 Issue 1, January-2024

Pages : c672-c677

Paper Reg. ID: IJNRD_212571

Published Paper Id: IJNRD2401284

Downloads: 000121125

Research Area: Chemistry

Country: Lucknow, Uttar Pradesh, United States

Published Paper PDF: https://ijnrd.org/papers/IJNRD2401284.pdf

Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRD2401284

Journal Name: INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT(IJNRD)

ISSN: 2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.76 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

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This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition

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