Determination of traces of palladium in stream sediment and auto catalyst by FI-ICP-OES using on-line separation and preconcentration with QuadraSil TA.
A flow injection analysis (FIA) method using on-line separation and preconcentration with a novel metal scavenger beads, QuadraSil TA, has been developed for the ICP-OES determination of traces of palladium. QuadraSil TA contains diethylenetriamine as a functional group on spherical silica beads and shows the highest selectivity for Pd(II) at pH 1 (0.1 mol l(-1) hydrochloric acid) solution. An aliquot of the sample solution prepared as 0.1 mol l(-1) in hydrochloric acid was passed through the QuadraSil TA column. After washing the column with the carrier solution, the Pd(II) retained on the column was eluted with 0.05 mol l(-1) thiourea solution and the eluate was directly introduced into an ICP-OES. The proposed method was successfully applied to the determination of traces of palladium in JSd-2 stream sediment certified reference material [0.019+/-0.001 microg g(-1) (n=3); provisional value: 0.0212 microg g(-1)] and SRM 2556 used auto catalyst certified reference material [315+/-4 microg g(-1) (n=4); certified value: 326 microg g(-1)]. The detection limit (3 sigma) of 0.28 ng ml(-1) was obtained for 5 ml of sample solution. The sample through puts for 5 ml and 100 microl of the sample solutions were 10 and 15 h(-1), respectively.
Nakajima
Junichi
J
Analysis Research Department, Chemical Research Laboratories, Nissan Chemical Industries, Ltd., 722-1 Tsuboi-cho, Funabashi 274-8507, Japan. nakajimaj@nissanchem.co.jp
Ohno
Masashi
M
Chikama
Katsumi
K
Seki
Tatsuya
T
Oguma
Koichi
K
D000327:Adsorption; D053000:Analytic Sample Preparation Methods; D002384:Catalysis; D017022:Flow Injection Analysis / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry*; D006046:Gold / Q000737:chemistry / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D013058:Mass Spectrometry; D008863:Microspheres; D009992:Osmium / Q000737:chemistry / Q000302:isolation & purification; D010165:Palladium / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D010984:Platinum / Q000737:chemistry / Q000302:isolation & purification; D011073:Polyamines / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013890:Thiourea / Q000737:chemistry
D011073:Polyamines; C005391:diethylenetriamine; D009992:Osmium; D010984:Platinum; D010165:Palladium; D006046:Gold; D012822:Silicon Dioxide; D013890:Thiourea