Investigation of influence of physicochemical parameters on the bismuth(III) extraction with N-n-heptylaniline from hydrochloric acid media: separation of bismuth(III) from polymetallic mixtures

The extraction study of bismuth(III) with N- n -heptylaniline has been carried out in presence of haloacid media. Bismuth(III) was quantitatively extracted with 10 mL solution of 4% N- n -heptylaniline in xylene. The extracted bismuth(III) from organic phase was back stripped with (2×25) mL acetate buffer and estimated complexometrically. Various parameters such as effect of metal ion, acid, reagent concentration, temperature are investigated for the optimization of the extraction condition. The method affords binary and ternary mixture separation of bismuth(III) from a lot of associated metal ions. This method is also applied for the analysis of ores, alloys, synthetic mixtures and pharmaceutical samples. The method is simple, rapid, and efficient, making it suitable for routine analysis in analytical laboratories. The findings of this study provide valuable information for further research on the extraction of bismuth(III) using N-n-heptylaniline in different media.