2001•Journal of East China Geological InstituteRequires access

Study on Synthesis of a New Reagent and Its colour Reaction with Cobalt(II)

HU Chun-hua

Abstract

A new colour reagent has been synthesized and tested by infra-red spectrum. It reacts with cobalt to forms a red complex, the maximum absorption peak of the complex is at 510 nm and molar absorption coefficient is 1.6×10+4 L·mol+{-1}·cm+{-1} , Beer's law is obeyed in the range of 0～25 μg Co(II)/25mL. The method is used for the determination of cobalt with satisfactory results.

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Key concepts: Reagent, Cobalt, Molar absorptivity, Color reaction, Chemistry, Absorption (acoustics), Molar ratio, Absorption spectroscopy