title: Solid phase extraction of some precious metals from hydrochloric acid to polystyrene-divinylbenzene porous resin impregnated with polyoxyethylene-type nonionic surfactant.
abstract: The solid phase extraction of gold(III), platinum(II), and palladium(II) to surfactant-impregnated polystyrene-divinylbenzene porous resin (XAD-4) was studied. The extracting media could be prepared just by mixing the resin in aqueous surfactant solutions. XAD-4 impregnated with a nonionic surfactant, polyethylene glycol monooleyl ether, was useful for extracting gold(III) from hydrochloric acid. The extractions of platinum(II) and palladium(II) were improved in the use of XAD-4 impregnated with a nitrogen-containing nonionic surfactant, polyethylene glycol stearyl amine. On the other hand, base metals such as copper(II), cobalt(II), nickel(II) and zinc(II), were hardly extracted.
authors.affiliation: Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan. saitoh@numse.nagoya-u.ac.jp
authors.forename: Tohru
authors.initials: T
authors.lastname: Saitoh
authors.forename: Syuntaro
authors.initials: S
authors.lastname: Suzuki
authors.forename: Masataka
authors.initials: M
authors.lastname: Hiraide
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000295:instrumentation / Q000379:methods; D004987:Ethers / Q000737:chemistry*; D006046:Gold / Q000032:analysis / Q000302:isolation & purification; D006851:Hydrochloric Acid / Q000737:chemistry*; D007475:Ion Exchange Resins / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis* / Q000302:isolation & purification; D010165:Palladium / Q000032:analysis / Q000302:isolation & purification; D010984:Platinum / Q000032:analysis / Q000302:isolation & purification; D011092:Polyethylene Glycols / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D016062:Porosity; D015203:Reproducibility of Results
chemical_list: D004987:Ethers; D007475:Ion Exchange Resins; D019216:Metals, Heavy; D011137:Polystyrenes; D011145:Polyvinyls; C451001:polyoxyethylene(10)-p-isononylphenyl ether; C012101:XAD-4 resin; D011092:Polyethylene Glycols; D010984:Platinum; D010165:Palladium; D006046:Gold; D006851:Hydrochloric Acid