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2003•Journal of Shandong Institute of Building MaterialsRequires access

The Spectrophotometric Determination of Trace Chromium(VI) with CPA-mA

Yu Jing

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Abstract

The fading reaction of CPA-mA with Cr 2O 2- 7 was studied.In the medium of surface active agent and nitric acid,the fading reaction has high sensibility.The Beer's law is obeyed in the range of 0～240?μg/L Cr(VI) content, and the molar absorptivity of reaction is 8.2×10 4?L·mol -1 ·cm -1 .So a new method determining trace chromium is developed.This method can be used to the determination of chromium in water and alloy steel samples.

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The fading reaction of CPA-mA with Cr 2O 2- 7 was studied.In the medium of surface active agent and nitric acid,the fading reaction has high sensibility.The Beer's law is obeyed in the range of 0～240?μg/L Cr(VI) content, and the molar absorptivity of reaction is 8.2×10 4?L·mol -1 ·cm -1 .So a new method determining trace chromium is developed.This method can be used to the determination of chromium in water and alloy steel samples.

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Available abstract

The fading reaction of CPA-mA with Cr 2O 2- 7 was studied.In the medium of surface active agent and nitric acid,the fading reaction has high sensibility.The Beer's law is obeyed in the range of 0～240?μg/L Cr(VI) content, and the molar absorptivity of reaction is 8.2×10 4?L·mol -1 ·cm -1 .So a new method determining trace chromium is developed.This method can be used to the determination of chromium in water and alloy steel samples.

Key concepts: Chromium, Molar absorptivity, Nitric acid, Fading, TRACE (psycholinguistics), Chemistry, Nuclear chemistry, Alloy

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