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2011•Zhongguo tiaoweipinRequires access

Spectrophotometric determination of iodine in common salt by oxidation decoloration of methylene blue.

Shi XianYi, Li ShiTan, Gan ChangJun

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Abstract

A new method has been found for the determination of iodine in common salt.The method is based on the oxidation-decoloration of methylene blue with iodate in a HCl medium.The maximum absorption of the product is at 667 nm.A linear relationship is established in the range of 0~1.2 μg/mL for iodine.The molar absorptivity is 1.1×105 L·mol-1·cm-1.The method has been used in determination of iodine in common salt with satisfactory results.

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What this paper is about

A new method has been found for the determination of iodine in common salt.The method is based on the oxidation-decoloration of methylene blue with iodate in a HCl medium.The maximum absorption of the product is at 667 nm.A linear relationship is established in the range of 0~1.2 μg/mL for iodine.The molar absorptivity is 1.1×105 L·mol-1·cm-1.The method has been used in determination of iodine in common salt with satisfactory results.

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Available abstract

A new method has been found for the determination of iodine in common salt.The method is based on the oxidation-decoloration of methylene blue with iodate in a HCl medium.The maximum absorption of the product is at 667 nm.A linear relationship is established in the range of 0~1.2 μg/mL for iodine.The molar absorptivity is 1.1×105 L·mol-1·cm-1.The method has been used in determination of iodine in common salt with satisfactory results.

Key concepts: Iodine, Iodate, Molar absorptivity, Methylene blue, Chemistry, Salt (chemistry), Absorption (acoustics), Potassium iodate

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