The effect of sulphate ions in a buffered medium on the extraction of manganese(II) (Mn(II)) into 1-phenyl-3-methyl-4-butyryl-pyrazolone-5 (HBuP) in chloroform and benzene solutions has been studied. It showed that extraction at lower pH values is more favorable with solvents that have lower dielectric constants. It is also shown that an increase in sulphate ion concentration in the buffered medium leads to a decrease in Mn(II) extraction and a shift of the extraction process to higher pH values. Slight synergism occurred in the distribution of the metal ion into the benzene-butanol phase and data showed that pH 1 / 2 was further shifted to lower values on the addition of butanol into either of the organic phases studied.The slope analysis indicated that Mn(BuP) 2 species were extracted during all the extraction processes. The extraction patterns from solutions of mineral acids, salting out, and auxiliary complexing agents were reported. The pH 1 / 2 , log K D , and log K ex of all the extraction systems were determined and used for explaining the various extraction processes observed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.