Selective concentration of gold in water to a polystyrene-embedded fiber disk with polyoxyethylene(10)-p-isononylphenyl ether.
A new surfactant-mediated separation method was developed for concentrating traces of gold ion in water. The methodology is based on the combination of selective complexation of gold(III) with polyoxyethylene(10)-p-isononylphenyl ether, PONPE-10, and strong binding of surfactant complex to hydrophobic polystyrene resins embedded in a PTFE fiber disk (Empore disk). A 400-fold concentration of gold(III) was achieved by 400 ml load of the sample containing 0.01% (w/v) PONPE-10 and 0.10 M nitric acid and by the subsequent elution with 1.0 ml of aqueous buffer solution of 0.01 M N-(dithiocarboxyl)sarcosine diammonium. Traces of gold (0.40 ng/l) in river water samples were successfully determined with inductively coupled plasma MS.
Saito
T
T
Department of Molecular Design and Engineering, Nagoya University, Chikusa, Japan. saitoh@numse.nagoya-u.ac.jp
Akita
S
S
Torii
T
T
Hiraide
M
M
D004987:Ethers / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D013058:Mass Spectrometry; D011092:Polyethylene Glycols / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D004987:Ethers; D011137:Polystyrenes; C451001:polyoxyethylene(10)-p-isononylphenyl ether; D014867:Water; D011092:Polyethylene Glycols; D006046:Gold