Abstract For the determination of Nickel (II), a straight forward, sensitive, and accurate spectrophotometric approach has been created. The reagent 2-Acetylpyridine semicarbazone (APS) react with nickel (II) in aqueous solution in the pH range 0.5-12. In the pH range of 8.0 to 10.0, 2-Acetylpyridine semicarbazone (APS) interacts with nickel (II) to produce a light yellow tinted complex. At 350 nm, the compound has the highest absorption. The pH of the buffer (ammonium chloride – ammonium hydroxide) solution was selected because the complex exhibited a maximum and stable absorbance in the range of 8-10. The present approach successfully determines the presence of nickel in alloy steels, aluminum-based alloys, vegetable oil, and water.
Keywords Nickel (II), UV-VIS Spectrophotometer, 2-Acetylpyridine semicarbazone (APS).