Actas de congresos
Determination Of Bismuth In Metallurgical Materials Using A Quartz Tube Atomizer With Tungsten Coil And Flow Injection-hydride-generation Atomic Absorption Spectrometry
Spectrochimica Acta - Part B Atomic Spectroscopy. , v. 57, n. 12, p. 2113 - 2120, 2002.
A method for the determination of bismuth in metallurgical materials using hydride generation coupled with a merging zones flow system and atomic absorption spectrometry using a quartz tube atomizer with tungsten coil is proposed. The parameters related to the bismuthine generation, the flow injection system and the use of a tungsten coil were studied and the optimized system shows a wide calibration range and good stability over time, without losses in sensitivity. The analytical curve is linear from 10 to 750 μgl-1 of Bi with R≥0.999. A detection limit of 1.9 ng Bi and an analytical frequency of 60 determinations per hour were obtained. Five metallurgical reference materials were analyzed with the proposed method after their acid dissolution. The results obtained were in good agreement with certified or recommended values, and the relative standard deviations were lower than 5%. © 2002 Elsevier Science B.V. All rights reserved.571221132120Cadore, S., Baccan, N., Continuous hydride generation system for the determination of trace amounts of bismuth in metallurgical materials by atomic absorption spectrometry using an on-line stripping-type generator/gas-liquid separator (1997) J. Anal. At. Spectrom., 12, pp. 637-642Giacomelli, M.B.O., Da Silva, J.B.B., Curtius, A.J., Determination of Mo and Bi in steels by electrothermal atomic absorption spectrometry after complexation and sorption on activated carbon (1998) Talanta, 47, pp. 877-881Welz, B., Melcher, M., Determination of antimony, arsenic, bismuth, selenium, tellurium, and tin in metallurgical samples using the hydride AA technique-I. Analysis of low-alloy steels (1981) Spectrochim. Acta Part B, 36, pp. 439-462Da Silva, J.B.B., Giacomelli, M.B.O., Curtius, A.J., Determination of bismuth in aluminum and in steels by electrothermal atomic absorption spectrometry after on-line separation using a minicolumn of activated carbon (1999) Analyst, 124, pp. 1249-1253Giacomelli, M.B.O., Ganzarolli, E.M., Curtius, A.J., Automated flow injection system for the preconcentration of bismuth and lead from acid solutions of alloys and determination by electrothermal atomic absorption spectrometry (2000) Spectrochim. Acta Part B, 55, pp. 525-533Fairman, B., Hinds, M.W., Nelms, S.M., Penny, D.M., Goodall, P., Atomic spectrometry update - Industrial analysis: Metals, chemicals and advanced materials (1998) J. Anal. At. Spectrom. R, 13, pp. 233R-266RRombach, N., Kock, K., Atomabsorptionsspectralanalytische spurenbestimmung von wismut in organischer matrix mit dem hydridsystem (1978) Fresenius Z. Anal. Chem., 292, pp. 365-369Takada, T., Fujita, K., Use of thiosemicarbazide as masking agent for the direct determination of bismuth in copper by atomic-absorption spectrometry with hydride generation (1985) Talanta, 32, pp. 571-573Drinkwater, J.E., Atomic-absorption determination of bismuth in complex nickel-base alloys by generation of its covalent hydride (1976) Analyst, 101, pp. 672-677Fleming, H.D., Ide, R.G., Determination of volatile hydride-forming metals in steels by atomic absorption spectrometry (1976) Anal. Chim. Acta, 83, pp. 67-82Bye, R., Iron(III) as releasing agent for copper interference in the determination of selenium by hydride-generation atomic absorption spectrometry (1987) Anal. Chim. Acta, 192, pp. 115-117Wickstrøm, T., Lund, W., Bye, R., The masking effect of iron(III) on the interference from nickel and copper in the determination of tellurium by hydride generation/atomic absorption spectrometry (1988) Anal. Chim. Acta, 208, pp. 347-350Welz, B., Sperling, M., (1999) Atomic Absorption Spectrometry third ed., pp. 461-468. , Weinheim: VCH. Chapter 8.3Matoušek, T., Dědina, J., Selecká, A., Multiple microflame quartz tube atomizer - Further development towards the ideal hydride atomizer for atomic absorption spectrometry (2002) Spectrochim. Acta Part B, 57, pp. 451-462Ribeiro, A.S., Arruda, M.A.Z., Cadore, S., A quartz tube atomizer with tungsten coil: A new system for vapor atomization in atomic absorption spectrometry J. Anal. At. Spectrom., , in pressFujita, K., Tanaka, T., Effect of temperature on generation and decomposition of the group Vb element hydrides and estimation of the kinetic stability of gaseous bismuth hydride by atomic-absorption spectrometry (1986) Talanta, 33, pp. 203-207