Vol. 5 (08) pp. 1686-1691 DOI: 10.21474/IJAR01/5231

FIRST DERIVATIVE SPECTROPHOTOMETRY FOR SIMULTANEOUS DETERMINATION OF IRON AND CALCIUM USING BROMOPYROGALLOL RED.

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  • Faculty of Science, Department of Chemistry, University of Zakho, P.O. Box 12, Zakho-Duhok, Kurdistan Region, Iraq.
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Abstract

Bromopyrogallol Red (BPR) as analytical reagent has been used for simultaneous determination of iron and calcium using first-derivative spectrophotometry. The zero - crossing technique was employed using first-derivative for Fe-BPR and Ca-BPR at 600 nm and 558 nm respectively. The linear relationship for Fe and Ca determination obeys beer\'s law from 0.2-1.2 ?g/ml and 0.2-1.0 ?g/ml respectively. The proposed method should be useful for accurate, precise, and rapid determination of iron and calcium in various samples with percentage recovery of about 101%. The stability constants (mean of three values) were found to be 1.33?108 L2.mol-2 and 9.13 ? 1011 L2.mol-2 for Fe-BPR and Ca-BPR complexes respectively which indicates that the complexes are stable.

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How to Cite This Article

Amin K. Qasim and Lazgin A. Jamil. (2017); FIRST DERIVATIVE SPECTROPHOTOMETRY FOR SIMULTANEOUS DETERMINATION OF IRON AND CALCIUM USING BROMOPYROGALLOL RED., Int. J. of Adv. Res., 5 (08), 1686-1691, ISSN 2320-5407. DOI: https://doi.org/10.21474/IJAR01/5231

Corresponding Author

Lazgin A. Jamil
Department of chemistry, Faculty of Science, University of Zakho
Creative Commons Attribution 4.0 This work is licensed under a Creative Commons Attribution 4.0 International License.