title: New kinetic-spectrophotometric method for monitoring the concentration of iodine in river and city water samples.
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.
authors.affiliation: Young Researchers Club, Hamedan Branch, Islamic Azad University, Hamedan, Iran. a.farmany@iauh.ac.ir
authors.forename: A
authors.initials: A
authors.lastname: Farmany
authors.forename: A
authors.initials: A
authors.lastname: Khosravi
authors.forename: S
authors.initials: S
authors.lastname: Abbasi
authors.forename: J
authors.initials: J
authors.lastname: Cheraghi
authors.forename: R
authors.initials: R
authors.lastname: Hushmandfar
authors.forename: S
authors.initials: S
authors.lastname: Sobhanardakani
authors.forename: H
authors.initials: H
authors.lastname: Noorizadeh
authors.forename: S S
authors.initials: SS
authors.lastname: Mortazavi
mesh_terms: D002947:Cities; D004784:Environmental Monitoring / Q000379:methods*; D007455:Iodine / Q000032:analysis*; D007700:Kinetics; D057230:Limit of Detection; D045483:Rivers / Q000737:chemistry*; D013053:Spectrophotometry; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000706:statistics & numerical data
chemical_list: D014874:Water Pollutants, Chemical; D007455:Iodine