Use of Aliquat-336 for the extraction of cadmium from aqueous solutions

Abstract

A procedure is described for the concentration of cadmium from a large volume of aqueous solution. Cadmium is extracted from a solution containing chloride ion into a solution of Aliquat-336 in carbon tetrachloride and stripped from the extract into aqueous perchloric acid. Conditions for quantitative extraction and stripping have been established, by use of a radioactive tracer. Recoveries of cadmium standards, added to fresh, estuarial or sea water have been measured by flame atomic-absorption spectrometry.