Determination of lead in dialysis concentrates using flow injection hydride generation atomic absorption spectrometry

被引：26

作者：

Berkkan, A ^{[1
]}

Ertas, N ^{[1
]}

机构：

[1] Gazi Univ, Dept Anal Chem, Fac Pharm, TR-06330 Ankara, Turkey

来源：

TALANTA | 2004年 / 64卷 / 02期

关键词：

lead; hydride generation; salt matrices; dialysis concentrates;

D O I：

10.1016/j.talanta.2004.03.005

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Flow injection hydride generation atomic absorption spectrometry (FI-HGAAS) was used for determination of lead in dialysis concentrates. The parameters such as acidity, concentration of oxidising and reducing agents and argon gas flow rate were investigated to reach the best peak height sensitivity. No significant background signal was observed at high salt concentrations. The detection limit, concentration giving a signal equal to three times standard deviation of the blank signal, was 0.7 ng ml(-1) for a 500 mul injection volume. Precision of the measurements at the 20 ng ml(-1) level was 3.7% R.S.D. The dialysis concentrates analysed by FI-HGAAS were found to have 10-70 ng ml(-1) of lead. The same samples were analysed by ETAAS after removing the matrix using solid phase extraction with Chelex 100. The results were in agreement with those obtained by FI-HGAAS. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：423 / 427

页数：5

共 23 条

[1] Direct trace determination of lead in estuarine water using in situ preconcentration of lead hydride on Ir, Zr and W-coated graphite tubes [J].

Bermejo-Barrera, P ;

Moreda-Piñeiro, J ;

Moreda-Piñeiro, A ;

Bermejo-Barrera, A .

ANALYTICA CHIMICA ACTA, 1998, 368 (03) :281-289

[2] Usefulness of the chemical modification and the multi-injection technique approaches in the electrothermal atomic absorption spectrometric determination of silver, arsenic, cadmium, chromium, mercury, nickel and lead in sea-water [J].

Bermejo-Barrera, P ;

Moreda-Pineiro, J ;

Moreda-Pineiro, A ;

Bermejo-Barrera, A .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1998, 13 (08) :777-786

[3] Electrothermal atomic absorption spectrometric determination of lead, cadmium, copper and zinc in high-salt content samples after simultaneous separation on polyethylene powder impregnated with 1-(2-pyridylazo)-2-naphthol: application to the analysis of hemodialysis fluids [J].

Bohrer, D ;

do Nascimento, PC ;

Guterres, M ;

Trevisan, M ;

Seibert, E .

ANALYST, 1999, 124 (09) :1345-1350

[4] Determination of Cd and Pb in seawater by graphite furnace atomic absorption spectrometry with the use of hydrofluoric acid as a chemical modifier [J].

Cabon, JY .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2002, 57 (03) :513-524

[5]

CASTILLO JR, 1985, MIKROCHIM ACTA, V1, P253

[6] Determination of lead in a chloride matrix by atomic absorption spectrometry using electrothermal vaporization and capacitively coupled plasma atomization [J].

Chan, GCY ;

Chan, WT .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1998, 13 (03) :209-214

[7] Atomic and molecular spectra of vapours evolved in a graphite furnace. Part 1. Alkali halides [J].

Daminelli, G ;

Katskov, DA ;

Mofolo, RM ;

Tittarelli, P .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1999, 54 (05) :669-682

[8] Determination of trace amounts of some metals in samples with high salt content by atomic absorption spectrometry after cobalt-diethyldithiocarbamate coprecipitation [J].

Elci, L ;

Sahin, U ;

Oztas, S .

TALANTA, 1997, 44 (06) :1017-1023

[9]

FAGIOLI F, 1994, ANN CHIM-ROME, V84, P19

[10] Empirical modelling of interferences in electrothermal atomization atomic absorption spectrometry [J].

Grotti, M ;

Leardi, R ;

Frache, R .

ANALYTICA CHIMICA ACTA, 1998, 376 (03) :293-304

← 1 2 3 →