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Determination of Micro-amount Vanadium by Spectrophotometry

Jiang Lin

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Abstract

This paper presented a new method to determinate micro-amount of vanadium(Ⅴ) by spectrophotometry with V(Ⅴ)-KI-starch system.In the condition of acidity and unlight,vanadium oxidated KI and reacts with starch to form a blue product, which was in direct proportation to the micro-amount of vanadium.Beer' s law was obeyed in the range of 0-25ug/25ml.The apparent molar absorptivity was 2.60×104L/mol·cm.This method has been applied to the determination of micro-amount of vanadium(Ⅴ)in human hair with satisfactory results.

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What this paper is about

This paper presented a new method to determinate micro-amount of vanadium(Ⅴ) by spectrophotometry with V(Ⅴ)-KI-starch system.In the condition of acidity and unlight,vanadium oxidated KI and reacts with starch to form a blue product, which was in direct proportation to the micro-amount of vanadium.Beer' s law was obeyed in the range of 0-25ug/25ml.The apparent molar absorptivity was 2.60×104L/mol·cm.This method has been applied to the determination of micro-amount of vanadium(Ⅴ)in human hair with satisfactory results.

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Available abstract

This paper presented a new method to determinate micro-amount of vanadium(Ⅴ) by spectrophotometry with V(Ⅴ)-KI-starch system.In the condition of acidity and unlight,vanadium oxidated KI and reacts with starch to form a blue product, which was in direct proportation to the micro-amount of vanadium.Beer' s law was obeyed in the range of 0-25ug/25ml.The apparent molar absorptivity was 2.60×104L/mol·cm.This method has been applied to the determination of micro-amount of vanadium(Ⅴ)in human hair with satisfactory results.

Key concepts: Vanadium, Molar absorptivity, Spectrophotometry, Chemistry, Starch, Nuclear chemistry, Analytical Chemistry (journal), Inorganic chemistry

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