Determination of Vanadium (V) Using Metanil Yellow Dye as an Analytical Reagent: Spectrophotometric Analysis

Vanadium finds applications in various industries, accurate determination of vanadium levels ensures quality control and monitoring vanadium levels in drinking water and air helps in public health. The development of spectrophotometric determination using Metanil yellow dye contributes to the advancement of analytical chemistry. The method quantifies trace levels of vanadium in various samples and serves diverse societal needs, including environmental protection, industrial quality control, public health, scientific advancement, regulatory compliance, and resource management. A simple, rapid, selective and sensitive method for the spectrophotometric determination of microgram amount of Vanadium (V) utilizing the reaction of Metanil yellow dye in 40% Ethyl Alcohol medium. Metanil yellow reacts with Vanadium (V) instantaneously at room temperature in a slightly acidic medium. The complex exhibits an absorption maximum at 512 nm of UV- visible spectrophotometer with a molar absorptivity of 2.21 × 105 litre mol-1 cm-1. The sensitivity is 4.52 n gm of Vanadium ml-1 and the optimum range for the effective spectrophotometric determination is 0.05-0.41µg ml-1. A five-fold molar excess of the dye is necessary for the full development of the colour intensity. The influence of some common ions is reported.