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Preconcentration and separation of trace Pd(II) and Pt(IV) with silica, gel bonded by aminopropyl‐benzoylazo‐4‐(2‐pyridylazo)‐resorcinol
Author(s) -
Feng Li Lhj,
Wen Chen,
YanSheng Wu,
TuanLi Yao,
ShenYang Tong
Publication year - 2000
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20000180415
Subject(s) - chemistry , resorcinol , silica gel , chromatography , trace amounts , nuclear chemistry , palladium , catalysis , organic chemistry , medicine , alternative medicine , pathology
This paper reports a simple and highly selective method for preconcentrating and separating of trace Pd(II) and Pt(IV) with silica gel bonded by aminopropyl‐benzoylazo‐4‐(2‐pyridylazo)‐resorcinol (ABPR·SG). ABPR·SG is stable in solution from 6 mol/L HCl to pH 7.0 and in common organic solvents. The maximum adsorptive capacity of Pd(II) on ABPRSG is 362 μmol/g. After preconcentrating and separation by using ABPR·SG column, Pd(II) and Pt(IV) of μg/L level in artificial water samples can be measured reliably by common spectrophotometer. The maximum concentration factors of Pd(II) and Pt(IV) on ABPR·SG column are 143 and 125 respectively. The chromatographic column packed with ABPR·SG can be reused. The method is simple and efficient.