Spectrophotometric Study and Analytical Applications of Iron (III)-Chelate System with (Mordant Blue-9) Reagent in Aqueous Solution

Yaqoob, Dheyaa Jirjees (2017) Spectrophotometric Study and Analytical Applications of Iron (III)-Chelate System with (Mordant Blue-9) Reagent in Aqueous Solution. Eurasian Journal of Science and Engineering, 3 (1). pp. 72-82. ISSN 24145629

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Abstract

The reagent 6-(5-chloro-2-hydroxy-3-sulfophenylazo)-5-hydroxy-1-naphthalene sulfonic acid (Mordant blue – 9) is proposed as a spectrophotometric reagent for the determination of trace amounts of iron (III). The proposed chromogenic reagent is sensitive and reacts with iron to form a stable brown 1:2 (Fe (III) – reagent) complex at pH 3.75, Kst = 9.824*109 L2.mol-2. The apparent molar absorptivity of this complex was 16000 l .mol -1 cm-1 at 650 nm in aqueous solutions. Beer's law is obeyed with the range of 6 – 75 μg /25 ml i.e 0.24 – 3 ppm. The reagent is relatively selective for iron III. The importance of this work arises from that it allows quantification and determination of Iron without initial expensive and fatigue separation or extraction procedure. Different analytical validations were determined (accuracy, precision, recovery, stability of the complex, study of interferences, etc.) to demonstrate the suitability of this work for the routine quality control labs. The aim of this work was to determine iron III in aqueous solution specrtophotometrically employing mordant blue-9 reagent. The developed method was applied for the determination of Fe III in urine samples. The results agree with AAS with RSD (±0.74 - ±2.64).

Item Type: Article
Uncontrolled Keywords: Iron (III), Spectrophotometry, Mordant blue -9, Analytical Applications
Subjects: S Agriculture > S Agriculture (General)
Divisions: Ishik Eurasian Journal of Science and Engineering > VOL 3, NO 1 (2017)
Depositing User: Depositor @ Ishik University
Date Deposited: 23 Apr 2018 20:34
Last Modified: 23 Apr 2018 20:34
URI: http://eprints.ishik.edu.iq/id/eprint/36

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