The method is simple and free from the interference of all cations and anions and has a wide linear range. ![]() The quantitative flotation of the complex was possible in the pH range of 9-12. The complex was separated and Ni determined spectrophotometrically by DMG after addition of oxidizing agent. The method is based on the flotation of a complex of Ni and dimethylglyoxime (DMG) at the aqueous solution- n-hexane interface. ![]() ![]() Hamid Hashemi-Moghaddam * of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, Damghan, IranĪ simple and selective method for separation and preconcentration of nickel has been developed. A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime
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