Determination of Mo and Bi in steels by electrothermal atomic absorption spectrometry after complexation and sorption on activated carbon

被引：37

作者：

Giacomelli, MBO ^{[1
]}

da Silva, JBB ^{[1
]}

Curtius, AJ ^{[1
]}

机构：

[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

来源：

TALANTA | 1998年 / 47卷 / 04期

关键词：

electrothermal atomic absorption spectrometry; dithiophosphoric acid O; O-diethyl ester; molybdenum; bismuth; steel;

D O I：

10.1016/S0039-9140(98)00176-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple method for the preconcentration of Mo and Bi in steels is proposed. The analytes are complexed with the ammonium salt of dithiophosphoric acid O,O-diethyl ester and sorbed onto activated carbon. After desorption into a small volume of nitric acid at low pH, Mo and Bi are determined by electrothermal atomic absorption spectrometry. Iron(III) is reduced to Fe(II), which is not complexed and not significantly retained on the carbon. Enrichment factor of 23 and 26 were obtained for Mo and Bi, respectively. The method was applied to the analysis of four certified reference steels, after acid dissolution in a microwave system and good agreement was obtained with the certified or recommended values. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：877 / 881

页数：5

共 14 条

[1] DETERMINATION OF SILVER IN WATERS AND SOIL BY ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY AFTER COMPLEXATION AND SORPTION ON CARBON [J].

AVILA, AK ;

CURTIUS, AJ .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1994, 9 (04) :543-546

[2] DITHIOPHOSPHORIC-ACID-O,O-DIETHYLESTER FOR TRACE ENRICHMENT ON ACTIVATED CARBON .1. ANALYSIS OF HIGH-PURITY GALLIUM AND ALUMINIUM-DETERMINATION OF THE ELEMENT TRACES BY FLAME-AAS (INJECTION METHOD AND LOOP-AAS) [J].

BERNDT, H ;

MESSERSCHMIDT, J .

FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1981, 308 (02) :104-111

[3] DITHIOPHOSPHORIC-ACID-O,O-DIETHYLESTER FOR TRACE ENRICHMENT ON ACTIVATED CARBON .2. ANALYSIS OF HIGH-PURITY IRON CHROMIUM AND MANGANESE [J].

BERNDT, H ;

MESSERSCHMIDT, J ;

REITER, E .

FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1982, 310 (3-4) :230-233

[4]

BODE H, 1962, FRESEN Z ANAL CHEM, V185, P99

[5]

BODE H, 1962, Z ANAL CHEM, V185, P179

[6]

CHIAVERINI V, 1988, ACOS FERROS FUNDIDOS, P209

[7]

FRECH W, 1975, ANAL CHEM, V275, P353

[8] DIRECT SOLID SAMPLING OF NICKEL BASED ALLOYS BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY WITH AQUEOUS CALIBRATION [J].

IRWIN, R ;

MIKKELSEN, A ;

MICHEL, RG ;

DOUGHERTY, JP ;

PRELI, FR .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1990, 45 (08) :903-915

[9] Flow injection sorbent extraction with dialkyldithiophosphates as chelating agent for the determination of cadmium, copper and lead by flame atomic absorption spectrometry [J].

Ma, RL ;

Adams, F .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1996, 51 (14) :1917-1923

[10] DETERMINATION OF MOLYBDENUM BY FLAME AND ELECTROTHERMAL ATOMIZATION ATOMIC-ABSORPTION SPECTROMETRY AFTER COMPLEXATION AND SORPTION ON ACTIVATED CARBON [J].

MONTE, VLA ;

CURTIUS, AJ .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1990, 5 (01) :21-24

← 1 2 →