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2009•Journal of Liaoning UniversityRequires access

Study on Determination of Trace Bromate by Decolor Spectrophotometric Method of Rhodamine B

Ying Li

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Abstract

A new method for the determination of trace bromate is proposed in this paper.The optimum conditions for the oxidation of rhodamine B by bromate in hydrochloric acid medium are studied.The maximum absorption peak is located at 556 nm with an apparent molar absorptivity of 1.5×10 5 L·mol-1 ·cm-1.The detection limit is 1.12×10-8 g·mL-1 and the linear range is 0.0～18.0 μg·(25 mL)-1 of bromate.The proposed method has been applied in determining of trace bromate in chemical reagents with satisfactory results.

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What this paper is about

A new method for the determination of trace bromate is proposed in this paper.The optimum conditions for the oxidation of rhodamine B by bromate in hydrochloric acid medium are studied.The maximum absorption peak is located at 556 nm with an apparent molar absorptivity of 1.5×10 5 L·mol-1 ·cm-1.The detection limit is 1.12×10-8 g·mL-1 and the linear range is 0.0～18.0 μg·(25 mL)-1 of bromate.The proposed method has been applied in determining of trace bromate in chemical reagents with satisfactory results.

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Available abstract

A new method for the determination of trace bromate is proposed in this paper.The optimum conditions for the oxidation of rhodamine B by bromate in hydrochloric acid medium are studied.The maximum absorption peak is located at 556 nm with an apparent molar absorptivity of 1.5×10 5 L·mol-1 ·cm-1.The detection limit is 1.12×10-8 g·mL-1 and the linear range is 0.0～18.0 μg·(25 mL)-1 of bromate.The proposed method has been applied in determining of trace bromate in chemical reagents with satisfactory results.

Key concepts: Bromate, Molar absorptivity, Hydrochloric acid, Chemistry, Detection limit, Reagent, Rhodamine B, Linear range

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