Acta Facultatis Ecologiae - Technická univerzita vo Zvolene

89of SIMS for quantitative measurement of uraniumisotopes and contaminated metal surfaces by naturaluranium. Linear correlation between the SIMSmaximum ion intensity vs. alpha activity as wellas of SIMS maximum ion intensity vs. surface’sweight were obtained according to Fig. 7 and Tab.4, respectively. We can see from these correlationsthe deviation from linearity of low-level activitydiscs, which is caused by low count rates in SIMS.These are evidently near background of SIMS device.Measurements of minimal detection mass(MDM) of uranium isotopes and uncertainties ofthe counts in SIMS need to carry out additionalexperiments, but they were not realized for timedemandingness yet. Preliminary results indicatethe possibility to use SIMS for quantitative analysisof surface contamination by uranium isotopes.From SIMS measurement it may be expected theacquirement of information about depth profiles ofdistribution of uranium as well as about distributionuniformity on a metal surface.AcknowledgementThis work was supported by the Slovak Researchand Development Agency under the No.APVV-20-007105 as well as by Scientific GrantAgency of the Ministry of Education of the SlovakRepublic – VEGA project 1/2447/05.REFERENCES1. ARANYOSIOVÁ, M.: Totálna chemická analýzamateriálov-hmotnostná spektrometria sekundárnychiónov. ChemZi. 2006, Vol. 2, No. 2, 52–53.2. VELIC, D.: Principle and applications of SIMStechnique (Secondary Ion Mass Spectrometry). In:Chemical and radioactive contaminants of the environment.Lectures, seminars and laboratory works(in Slovak). Bratislava: Omega Info. 2006. ISBN:80-969290-6-2. p. 1–5.3. SCHILLING, J. H.: Using the ion microprobe massanalyser for trace element analysis. In: Symposia ontrace element analytical techniques. Cape Town:South Africa. Apr 1978. Cape Town. 1978. INIS:10442825. 18 p.4. TOROK, S., BETTI, M.: X – ray fluorescence inIAEA Member states: Hungary. XRF and XANESanalysis of hot/cold particles complemented by masssensitive analysis for source identification. In: XRFnewsletter, Vienna: IAEA, 2004, No. 7, pp. 8–9. INIS:37066528. http://www-pub.iaea.org/MTCD/publications/PDF/Newsletters/XRF-NL-7.pdf[2007-7-18]5. KUTSCHERA, W.: Reading the isotope language.In: Aquatic Forum 2004: International conferenceon isotopes in environmental studies, Monte CarloMonaco), 25–29 Oct 2004. Vienna: IAEA. 713 pp.107. 2006. ISBN 92-0-111205-X. INIS: 37043516.http://www-pub.iaea.org/MTCD/publications/PDF/CSP_26_web.pdf6. TAMBORINI, G. ET AL.: The determination of sourceterms from radioactive particles in a marine environmentusing SIMS and IPCMS. In: Internationalconference on advances in destructive and non-destructiveanalysis for environmental monitoring andnuclear forensics, Karlsruhe (Germany), 21–23 Oct2002. Book of extended synopses, Vienna: IAEA.2002. 128 p. p. 115–117. INIS: 330579987. McDANIEL, F. D. ET AL. 2002: Impurity measurementsin semiconductor materials using trace elementaccelerator mass spectrometry. In: Nucl. Instrum.Methods Phys. Res., Sect. B. 2002, Vol. 190,No. 1–4, 826–830.8. MILEY, G. H.; NARNE, G.; WOO, T.: Use of combinedNAA and SIMS analyses for impurity levelisotope detection. J. Radioanal. Nucl. Chem., 2005,Vol. 263, No. 3, 691–696.9. HUBERT, R. L. ET AL.: Study of the Pd-Rh interdiffusionby three complementary analytical techniques:PIXE, RBS and ToF–SIMS. Nucl. Instrum. MethodsPhys. Res., Sect. B. 2005, Vol. 24, No. 1–2, 420–424.INIS: 3702705610. POMIES, C. ET AL.: 207 Pb/ 206 Pb and 238 U/ 230 Th datingof uranium migration in carbonate fractures from thePalmottu uranium ore (southern Finland). Appl. Geochem.,2004, Vol. 19, No. 3, 273–288.11. LAYNE, G. D., SIMS, K. W.: Secondary ion massspectrometry for the measurement of 232 Th/ 230 Th involcanic rocks. Int. J. Mass Spectrom., 2000, Vol.203, No. 1, 187–198.12. ZHU, X. K. ET AL.: SIMS analysis of U – Pb isotopesin monazite: matrix effects. Chem. Geol., 1998, Vol.144, No. 3, 305–312.13. GUAN, Y., HUSS, G. R.; LESHIN, L. A.: SIMSanalyses of Mg, Cr, and Ni isotopes in primitive meteoritesand short-lived radionuclides in the early solarsystem. Appl. Surf. Sci., 2004, Vol. 231–232, No.2, 899–902.14. GALANDA, D.: Príprava preparátov na meranieemitujúceho alfa žiarenia elektrodepozíciou. In: Chemicaland radioactive contaminants of the environment.Lectures, seminars and laboratory works (inSlovak). Bratislava: Omega Info, 2006, p. 27–30.ISBN: 80-969290-6-2.15. ŠÁRO, Š.: Detekcia a spektrometria žiarenia alfaa beta. Bratislava: Alfa, 1983, 279 s.16. AMERICIUM, PLUTONIUM AND URANIUM INWATER. Eichrom Industries, Inc. Analytical Procedures,ACW03. March 31, 1999 http://www.orteconline.com/papers/radiochem/method1.pdf. [2007--07-12].17. Table of isotopes: http://atom.kaeri.re.kr/ton/nuc11.html [2007-07-16]18. WIESER, M. E. 2006: Atomic weights of the elements2005. Pure Appl. Chem., Vol. 78, No. 11,2051–2066.