tailieunhanh - Ion-pair based liquid–liquid extraction of gold(III) from malonate media using 2-octylaminopyridine as an extractant: Analysis of alloys, minerals, and drug samples

Liquid–liquid extraction of Au(III) from aqueous sodium malonate medium using 2-octylaminopyridine (2-OAP) as an extractant in xylene was achieved. The current work explored the influence of several experimental parameters such as pH, weak acid concentration, extractant concentration, equilibrium time, stripping agents, and aqueous:organic volume ratio on the extraction of Au(III). The experimental results showed that the Au(III) was quantitatively extracted to about by M 2-OAP in M malonate at pH. Ammonia solution was used to strip the gold-loaded organic phase and about of Au(III) was reversibly extracted into the aqueous phase. |

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