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Synthesis of a New Chromogenic Reagent 2-(2-Quinolinylazo)- 1,5-Dihydroxidebenzen and its Color Reaction with Cobalt

Dong Xue-chang

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Abstract

Quinolinylazo)-1,5-Dihydroxidebenzen(QADHB)was synthesized,and its color roaction with cobalt(Ⅱ) was studied.In the medium of CTMAB and presence of PH=4.4 buffer solution.QADHN can react with cobalt(Ⅱ) to form a stable 2;1 complex.The molar absorptivity is at 580nm. Beer's law is obeyed in range of 0～15ug/25ml.This method can be applied to the determination of cobalt in Bitamin B12 injection with satisfacory results.

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What this paper is about

Quinolinylazo)-1,5-Dihydroxidebenzen(QADHB)was synthesized,and its color roaction with cobalt(Ⅱ) was studied.In the medium of CTMAB and presence of PH=4.4 buffer solution.QADHN can react with cobalt(Ⅱ) to form a stable 2;1 complex.The molar absorptivity is at 580nm. Beer's law is obeyed in range of 0～15ug/25ml.This method can be applied to the determination of cobalt in Bitamin B12 injection with satisfacory results.

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Available abstract

Quinolinylazo)-1,5-Dihydroxidebenzen(QADHB)was synthesized,and its color roaction with cobalt(Ⅱ) was studied.In the medium of CTMAB and presence of PH=4.4 buffer solution.QADHN can react with cobalt(Ⅱ) to form a stable 2;1 complex.The molar absorptivity is at 580nm. Beer's law is obeyed in range of 0～15ug/25ml.This method can be applied to the determination of cobalt in Bitamin B12 injection with satisfacory results.

Key concepts: Chromogenic, Cobalt, Reagent, Molar absorptivity, Color reaction, Chemistry, Spectrophotometry, Buffer solution

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