SOLVENT EXTRACTION OF CHROMIUM (Ⅵ) FROM AQUEOUS MINERAL ACID SOLUTIONS OF BY TRIPHENYL ARSINE OXIDE

摘要

The extraction of Chromium (Ⅵ) from hydrochloric, sulphuric, nitric and perchloric acid solutions has been studied. The optimum conditions for extraction were established from the study of the effect of several variables like concentration of extractant, metal ion, acidity etc. The extraction from hydrochloric, sulphuric acid solutions are nearly quantitative and are partial from perchloric and nitric acid solutions. The extracted species are identified.