✦ LIBER ✦

Preconcentration and separation of trace Pd(II) and Pt(IV) with silica, gel bonded by aminopropyl-benzoylazo-4-(2-pyridylazo)-resorcinol

✍ Scribed by Lhj Feng Li; Ke-An; Chen Wen; Wu Yan-Sheng; Yao Tuan-Li; Tong Shen-Yang

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 286 KB
Volume: 18
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.20000180415

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✦ Synopsis

Abstract

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.

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Study on Preconcentration and Separation of Trace Pd(II) and Pt(IV) with Silica Gel Bonded by Aminopropyl-benzoylazo-1-(2-Pyridylazo)-2-Naphthol

✍ F. Liu; K.A. Li; Y.S. Wu; X. Wang; S.Y. Tong 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 285 KB

This paper reports on preconcentration and separation of trace \(\mathrm{Pd}(\mathrm{II})\) and \(\mathrm{Pt}(\mathrm{IV})\) with silica gel bonded by aminopropyl-benzoylazo-1-(2-pyridylazo)-2-naphthol (ABPN - SG). ABPN - SG is stable in solution between \(6 \mathrm{~mol} /\) liter \(\mathrm{HCl}\)