Nanometer-size titanium dioxide separation/preconcentration and FAAS determination of trace Zn and Cd in water sample

被引：84

作者：

Liang, P ^{[1
]}

Shi, TQ

Li, J

机构：

[1] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China

[2] Jinggangshan Teachers Coll, Jian 343009, Jiangxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2004年 / 84卷 / 04期

关键词：

nanometer TiO2; separation/preconcentration; FAAS; Zn; Cd;

D O I：

10.1080/03067310310001640456

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method using nanoparticle TiO2 as solid-phase extractant coupled with FAAS was proposed for preconcentration and determination of trace Zn and Cd. The effects of pH, contact time, elution solution and interfering ions on the adsorption behavior of nanometer TiO2 towards Zn and Cd were investigated. Under optimum conditions, nanometer TiO2 possesses a significant capacity for the sorption of the metal ions studied. The limits of detection (3delta) of this method were 1.8 ng mL(-1) of Zn and 3.0 ng mL -1 of Cd with an enrichment factor of 12.5, and relative standard deviations were 3.8% and 4.3% for Zn and Cd, respectively (c = 0.5 mug mL(-1) , n = 9). The proposed method was validated by the analysis of water certified reference material.

引用

页码：315 / 321

页数：7

共 32 条

[1] Analysis for Cd, Cu, Ni, Zn, and Mn in estuarine water by inductively coupled plasma mass spectrometry coupled with an automated flow injection system [J].

Beck, NG ;

Franks, RP ;

Bruland, KW .

ANALYTICA CHIMICA ACTA, 2002, 455 (01) :11-22

[2] Cadmium removal from aqueous solutions by chitin: kinetic and equilibrium studies [J].

Benguella, B ;

Benaissa, H .

WATER RESEARCH, 2002, 36 (10) :2463-2474

[3] On-line preconcentration/determination of cadmium in drinking water on activated carbon using 8-hydroxyquinoline in a flow injection system coupled to an inductively coupled plasma optical emission spectrometer [J].

Cerutti, S ;

Silva, MF ;

Gásquez, JA ;

Olsina, RA ;

Martinez, LD .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2003, 58 (01) :43-50

[4] On line separation and sequential determination of trace amounts of heavy metals in biological materials by flow injection inductively coupled plasma atomic emission spectrometry [J].

Cordero, MTS ;

Alonso, EIV ;

DeTorres, AG ;

Pavon, JMC .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1996, 11 (02) :107-110

[5] Comparison of metal pre-concentration on immobilized Kelex-100 and quadruple inductively coupled plasma mass spectrometric detection with direct double focusing inductively coupled plasma mass spectrometric measurements for ultratrace multi-element determinations in sea-water [J].

Ferrarello, CN ;

Bayón, MM ;

Alonso, JIG ;

Sanz-Medel, A .

ANALYTICA CHIMICA ACTA, 2001, 429 (02) :227-235

[6] 1,8-dihydroxyanthraquinone anchored on silica gel: synthesis and application as solid phase extractant for lead(II), zinc(II) and cadmium(II) prior to their determination by flame atomic absorption spectrometry [J].

Goswami, A ;

Singh, AK .

TALANTA, 2002, 58 (04) :669-678

[7] Silica gel functionalized with resacetophenone: synthesis of a new chelating matrix and its application as metal ion collector for their flame atomic absorption spectrometric determination [J].

Goswami, A ;

Singh, AK .

ANALYTICA CHIMICA ACTA, 2002, 454 (02) :229-240

[8] SMALL-PARTICLE RESEARCH - PHYSICOCHEMICAL PROPERTIES OF EXTREMELY SMALL COLLOIDAL METAL AND SEMICONDUCTOR PARTICLES [J].

HENGLEIN, A .

CHEMICAL REVIEWS, 1989, 89 (08) :1861-1873

[9] FLOW CONFIGURATIONS FOR INTERFACING AUTOMATIC ION-EXCHANGE DEVICES WITH SEQUENTIAL INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY - APPLICATION TO TRACE-METAL DETERMINATION IN PURE ALKALI-METAL SALTS [J].

ISRAEL, Y ;

KRUSHEVSKA, AP ;

FONER, H ;

MARTINES, LJ ;

BARNES, RM .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1993, 8 (03) :467-474

[10] Flow injection semi-online sorbent extraction preconcentration for graphite furnace atomic absorption spectrometry [J].

Jin, QH ;

Su, XG ;

Liang, F ;

Zhang, HQ .

MICROCHEMICAL JOURNAL, 1999, 62 (03) :316-327

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