Farmany A, Khosravi A, Abbasi S, Cheraghi J, Hushmandfar R, Sobhanardakani S, Noorizadeh H, Mortazavi SS. New kinetic-spectrophotometric method for monitoring the concentration of iodine in river and city water samples.
Environ Monit Assess 2013;
185:553-558. [PMID:
22392614 DOI:
10.1007/s10661-012-2574-4]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 02/10/2012] [Indexed: 05/31/2023]
Abstract
A new kinetic method has been developed for the determination of iodine in water samples. The method is based on the catalytic effect of I(-) with the oxidation of Indigo Carmine (IC) by KBrO(3) in the sulfuric acid medium. The optimum conditions obtained are 0.16 M sulfuric acid, 1 × 10(-3) M of IC, 1 × 10(-2) M KBrO(3), reaction temperature of 35°C, and reaction time of 80 s at 612 nm. Under the optimized conditions, the method allowed the quantification of I(-) in a range of 12-375 ng/mL with a detection limit of 0.46 ng/mL. The method was applied to the determination of iodine in river and city water samples with the satisfactorily results.
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