Preconcentration of palladium in a flow-through electrochemical cell for determination by graphite furnace atomic absorption spectrometry

被引:46
作者
Godlewska-Zylkiewicz, B [1 ]
Zaleska, M [1 ]
机构
[1] Univ Bialystok, Inst Chem, PL-15443 Bialystok, Poland
关键词
palladium; electrochemical preconcentration; GFAAS; dust;
D O I
10.1016/S0003-2670(02)00353-7
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An electrochemical preconcentration at a controlled potential on the electrode in a flow-through mode followed by graphite furnace atomic absorption spectrometric (GFAAS) detection is proposed for determination of trace amounts of palladium. After electrolysis the polarization of the electrodes was changed and deposited metal was dissolved electrochemically in the presence of an appropriate stripping reagent. Conditions for the electrodeposition, such as pH of the solutions, a deposition potential, dissolution potential and a composition of stripping solution were optimised. The graphite electrode (GE) and glassy carbon electrode (GCE) were tested for the palladium reduction process. The detection limit of 0.05 ng ml(-1) Pd (1 pg) was obtained after palladium preconcentration on the GCE and dissolution with 0.2 mol l(-1) thiourea in 0.1 mol l(-1) HCl followed by GFAAS detection. The method was applied for the determination of palladium in spiked tap water and road dust samples. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:305 / 312
页数:8
相关论文
共 33 条
[1]  
[Anonymous], AT ABSORPT NEWSL
[2]   ADSORPTION OF ANIONS ON SMOOTH PLATINUM ELECTRODES [J].
BAGOTZKY, VS ;
VASSIYEV, YB ;
WEBER, J ;
PIRTSKHA.JN .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1970, 27 (01) :31-&
[3]   Determination of physiological noble metals in human urine using liquid-liquid extraction and Zeeman electrothermal atomic absorption spectrometry [J].
Begerow, J ;
Turfeld, M ;
Dunemann, L .
ANALYTICA CHIMICA ACTA, 1997, 340 (1-3) :277-283
[4]   DETERMINATION OF PLATINUM IN BIOTIC AND ENVIRONMENTAL-SAMPLES BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY AFTER ITS ELECTRODEPOSITION INTO A GRAPHITE TUBE PACKED WITH RETICULATED VITREOUS CARBON [J].
BEINROHR, E ;
LEE, ML ;
TSCHOPEL, P ;
TOLG, G .
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1993, 346 (6-9) :689-692
[5]  
Beinrohr E, 1996, FRESEN J ANAL CHEM, V355, P528
[6]   Electrochemical response of thiourea and formamidine disulphide on polycrystalline platinum in aqueous 0.5 M sulphuric acid [J].
Bolzán, AE ;
Wakenge, IB ;
Salvarezza, RC ;
ARvia, AJ .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 475 (02) :181-189
[7]   Optimization of electrochemical deposition of noble metals for permanent modification in graphite furnace atomic absorption spectrometry [J].
Bulska, E ;
Liebert-Ilkowska, K ;
Hulanicki, A .
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1998, 53 (6-8) :1057-1062
[8]   On-line preconcentration of lead and cadmium for flame atomic absorption spectrometry using a flow-through electrochemical microcell [J].
Bulska, E ;
Walcerz, M ;
Jedral, W ;
Hulanicki, A .
ANALYTICA CHIMICA ACTA, 1997, 357 (1-2) :133-140
[9]  
Bulska E, 1997, ATOM SPECTROSC, V18, P202
[10]   Determination of palladium by adsorptive stripping voltammetry [J].
Georgieva, M ;
Pihlar, B .
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1997, 357 (07) :874-880