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2003•Yunnan Chemical TechnologyRequires access

Spectrophotometric Determination of Vanadium in Alloy with 2-(2-Quinolinylazo) -1,3-Dihydroxybenzene

Guangyu Yang

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Abstract

Optimum condition of the color reaction of 2-(2-quinolinylazo)-1,3-dihydroxylbenzene (QADHB) with vanadium (V) was studied. Result showed reaction took place in the presence of CTMAB in a buffered medium of (pH 3.5) to form a stable complex with mole ratio of V∶R as 1∶2, which had maximal absorption at 550 nm, with molar absorption coefficient as 7.79×10~4 L·mol~(-1)·cm~(-1). Beer's law was obeyed in the range of 0～15?μg/25 ml solution of V(V). The reaction had been applied to the determination of vanadium in alloy satisfactorily.

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What this paper is about

Optimum condition of the color reaction of 2-(2-quinolinylazo)-1,3-dihydroxylbenzene (QADHB) with vanadium (V) was studied. Result showed reaction took place in the presence of CTMAB in a buffered medium of (pH 3.5) to form a stable complex with mole ratio of V∶R as 1∶2, which had maximal absorption at 550 nm, with molar absorption coefficient as 7.79×10~4 L·mol~(-1)·cm~(-1). Beer's law was obeyed in the range of 0～15?μg/25 ml solution of V(V). The reaction had been applied to the determination of vanadium in alloy satisfactorily.

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Available abstract

Optimum condition of the color reaction of 2-(2-quinolinylazo)-1,3-dihydroxylbenzene (QADHB) with vanadium (V) was studied. Result showed reaction took place in the presence of CTMAB in a buffered medium of (pH 3.5) to form a stable complex with mole ratio of V∶R as 1∶2, which had maximal absorption at 550 nm, with molar absorption coefficient as 7.79×10~4 L·mol~(-1)·cm~(-1). Beer's law was obeyed in the range of 0～15?μg/25 ml solution of V(V). The reaction had been applied to the determination of vanadium in alloy satisfactorily.

Key concepts: Vanadium, Alloy, Molar ratio, Molar absorptivity, Chemistry, Absorption (acoustics), Analytical Chemistry (journal), Color reaction

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Spectrophotometric Determination of Vanadium in Alloy with 2-(2-Quinolinylazo) -1,3-Dihydroxybenzene — Research Paper | ScholarLens