Solid phase extraction method for the separation and determination of chromium(III) in the presence of chromium(VI) using silica gel modified by N,N′-bis-(α-methylsalicylidene)-2,2-dimethyl-1,3-propanediimine

被引：34

作者：

Bartyzel, Agata ^{[1
,2
]}

Cukrowska, Ewa M. ^{[2
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Gen & Coordinat Chem, PL-20031 Lublin, Poland

[2] Univ Witwatersrand, Sch Chem, ZA-2050 Johannesburg, South Africa

来源：

ANALYTICA CHIMICA ACTA | 2011年 / 707卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Chromium(III); Schiff's base; Silica gel; Solid phase extraction; Graphite furnace atomic absorption spectrometry; ATOMIC-ABSORPTION-SPECTROMETRY; CLOUD-POINT EXTRACTION; SELECTIVE-MEMBRANE SENSORS; LIQUID-LIQUID-EXTRACTION; SCHIFFS BASE; ACTIVATED CARBON; WATER SAMPLES; METAL-IONS; CAPILLARY-ELECTROPHORESIS; SPECIATION ANALYSIS;

D O I：

10.1016/j.aca.2011.09.023

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

N,N'-bis-(alpha-methylsalicylidene)-2,2-dimethyl-1,3-propanediimine (SBTD) modified silica gel was prepared and used as sorbent for solid phase extraction of Cr(III) ions from aqueous solution. This sorbent showed a high sorption affinity for Cr(III) while recovery of Cr(VI) was very low. The analyte ion retained on the column was eluted with 1 mol L-1 HNO3. The chromium ion in the eluent was determined by graphite furnace atomic absorption spectrometry. The effects of different parameters such as pH, eluent type and volume, Schiff's base concentration, sample and eluent flow rate, interfering ions and adsorbent amount were investigated. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：204 / 209

页数：6

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