Use of 8-hydroxyquinoline-chitosan chelating resin in an automated on-line preconcentration system for determination of zinc(II) by F AAS

被引：51
作者：
Carletto, Jeferson Schneider [1 ]
Di Pietro Roux, Kalya Cravo [1 ]
Maltez, Heloisa Franca [1 ]
Martendal, Edmar [1 ]
Carasek, Eduardo [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 157卷 / 01期
关键词：
chelating resins; chitosan; diazotization reaction; Zinc(II); flame atomic absorption spectrometry;
D O I：
10.1016/j.jhazmat.2007.12.083
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study presents the development of an on-line preconcentration system for zinc(II) determination in aqueous samples. The analyte was trapped in a mini-column filled with a chelating resin based on a chitosan biopolymer modified with 8-hydroxyquinoline obtained by the diazotization reaction. Flow and chemical variables of the system, as well as the potential interference ions, were optimized through a multivariate procedure. The factors selected were sample pH, eluent concentration (HN03), and sample and eluent flow rates. It was verified through a full factorial design that the sample pH and eluent flow rate factors were statistically significant at the 95% confidence level. A final optimization of the significant factors was carried out using a Doehlert matrix. The preconcentration system was linear between 2.5 and 75 Rg L-1, with a regression coefficient of 0.9995. The enrichment factor was 17.6. The limits of detection and quantification were 0.8 and 2.5 Lg L-1, respectively. The repeatability and the analytical frequency were, respectively, 2.7 (25.0 lLg L', n = 8) and 18 samples per hour. Results for recovery tests using mineral water samples were between 85 and 93%. Certified reference materials were. analyzed in order to check the accuracy of the proposed method. (c) 2007 Elsevier BX All rights reserved.
引用
收藏
页码：88 / 93
页数：6
相关论文
共 32 条
[11]   On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry [J].
Lemos, VA ;
dos Santos, WNL ;
Santos, JS ;
de Carvalho, MB .
ANALYTICA CHIMICA ACTA, 2003, 481 (02) :283-290
[12]   Preparation of silica-supported porous sorbent for heavy metal ions removal in wastewater treatment by organic-inorganic hybridization combined with sucrose and polyethylene glycol imprinting [J].
Li, Feng ;
Du, Ping ;
Chen, Wei ;
Zhang, Shusheng .
ANALYTICA CHIMICA ACTA, 2007, 585 (02) :211-218
[13]   A comparative study of homemade C18 and commercial C18 sorbents for preconcentration of lead by minicolumn solid phase extraction [J].
Maltez, HF ;
Melo, LFC ;
de Queiroz, SCD ;
Jardim, ICSF ;
Curtius, AJ ;
Carasek, E .
MICROCHIMICA ACTA, 2004, 144 (1-3) :17-21
[14]   Chromium speciation and preconcentration using zirconium(IV) and zirconium(IV) phosphate chemically immobilized onto silica gel surface using a flow system and F AAS [J].
Maltez, HF ;
Carasek, E .
TALANTA, 2005, 65 (02) :537-542
[15]   Application of chitosan functionalized with 8-hydroxyquinoline:: Determination of lead by flow injection flame atomic absorption spectrometry [J].
Martins, AO ;
da Silva, EL ;
Laranjeira, MCM ;
de Fávere, VT .
MICROCHIMICA ACTA, 2005, 150 (01) :27-33
[16]   Chelating resin from functionalization of chitosan with complexing agent 8-hydroxyquinoline:: application for metal ions on line preconcentration system [J].
Martins, AO ;
da Silva, EL ;
Carasek, E ;
Gonçalves, NS ;
Laranjeira, MCM ;
de Fávere, VT .
ANALYTICA CHIMICA ACTA, 2004, 521 (02) :157-162
[17]   Sulphoxine immobilized onto chitosan microspheres by spray drying:: application for metal ions preconcentration by flow injection analysis [J].
Martins, AO ;
Da Silva, EL ;
Carasek, E ;
Laranjeira, MCM ;
De Fávere, VT .
TALANTA, 2004, 63 (02) :397-403
[18]   Flame atomic absorption spectrometric determination of cadmium(II) and lead(II) after their solid phase extraction as dibenzyldithiocarbamate chelates on Dowex Optipore V-493 [J].
Melek, Esra ;
Tuzen, Mustafa ;
Soylak, Mustafa .
ANALYTICA CHIMICA ACTA, 2006, 578 (02) :213-219
[19]   Electrothermal atomic absorption spectrometric determination of copper(II) using a tungsten metal furnace after preconcentration onto chitosan [J].
Minamisawa, H ;
Arai, N ;
Okutani, T .
ANALYTICAL SCIENCES, 1999, 15 (03) :269-275
[20]   SP70-α-benzoin oxime chelating resin for preconcentration-separation of Pb(II), Cd(II), Co(II) and Cr(III) in environmental samples [J].
Narin, Ibrahim ;
Surme, Yavuz ;
Bercin, Erdogan ;
Soylak, Mustafa .
JOURNAL OF HAZARDOUS MATERIALS, 2007, 145 (1-2) :113-119
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