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2001•Journal of Analytical ScienceRequires access

A Kinetic Spectrophotometric Method for the Determination of Trace Chromium(VI) with Butylrhodamine B and Potassium Bromate

Zhao Xiao

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Abstract

A new kinetic method for the determination of trace chromium(Ⅵ) was established based on the catalytic action of Cr(Ⅵ) on the oxidative fading reaction between butylrhodamine B and KBrO 3 in sulfuric acid mediun. The calibration graph was linear in the range of 0.040～2.0 μg/mL for Cr(Ⅵ), and the detection limit was 9.68×10 -10 g/mL. The method has been used for the determination of trace chromium in the eletroplating waste water with a satisfactory result.

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What this paper is about

A new kinetic method for the determination of trace chromium(Ⅵ) was established based on the catalytic action of Cr(Ⅵ) on the oxidative fading reaction between butylrhodamine B and KBrO 3 in sulfuric acid mediun. The calibration graph was linear in the range of 0.040～2.0 μg/mL for Cr(Ⅵ), and the detection limit was 9.68×10 -10 g/mL. The method has been used for the determination of trace chromium in the eletroplating waste water with a satisfactory result.

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Available abstract

A new kinetic method for the determination of trace chromium(Ⅵ) was established based on the catalytic action of Cr(Ⅵ) on the oxidative fading reaction between butylrhodamine B and KBrO 3 in sulfuric acid mediun. The calibration graph was linear in the range of 0.040～2.0 μg/mL for Cr(Ⅵ), and the detection limit was 9.68×10 -10 g/mL. The method has been used for the determination of trace chromium in the eletroplating waste water with a satisfactory result.

Key concepts: Chemistry, Potassium bromate, Chromium, Detection limit, Bromate, Sulfuric acid, Linear range, Calibration curve

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A Kinetic Spectrophotometric Method for the Determination of Trace Chromium(VI) with Butylrhodamine B and Potassium Bromate — Research Paper | ScholarLens