Abstract
Silicon as silicon dioxide in iron and steel-making slags and fluorspars was analyzed by 14 MeV neutron activation high-resolution γ-ray spectrometry. Silicon was detected by measuring the 1.78 MeV γ-ray of28Al, the product of the28Si(n, p) reaction, using a 30 cm3 coaxial Ge(Li) detector. A modified TPA method was used for the calculation.28Al is also produced from phosphorus by the31P(n,α) reaction, and from aluminium by the27Al(n,γ) reaction. The contribution from the former reaction could be corrected experimentally when the P2O5 content of the sample was known, while the latter reaction could be neglected in this neutron energy region. The experimental correction coefficient for phosphorus agreed well with the theoretical value calculated from the nuclear properties of silicon and phosphorus. Yields of28Al from SiO2, P2O5 and Al2O3 of the same weight percentages were calculated as 1, 0.426 (experimentally 0.44) and 0.0022, respectively. The results of this method agreed well with the results of the usual chemical methods. The limit of detection of SiO2 in iron and steel-making slags and fluorspars was calculated as 0.07%. The coefficient of variation of repeated experiments was compared with the statistical one.
Similar content being viewed by others
References
G. Lundell, J. Hoffman, H. Bright (Eds), Chemical Analysis of Iron and Steel, Wiley, New York, 1950.
W. Westwood, A. Mayer, Chemical Analysis of Cast Iron and Foundry Materials, Allen & Unwin, London, 1951.
Nihon Gakujutsu Shinkokai (Ed.), Tekko Kagaku Bunseki Zensho, Vol. 8, Nikkan Kogyo, tokyo, 1963 (in Japanese).
S. Eckhard, G. Becker,Z. Anal. Chem., 215 (1966) 350.
P. Protsenko,Zavodsk. Lab., 23 (1957) 911.
S. Wakamatsu,Tetsu to Hagane, 45 (1959) 171 (in Japanese).
K. Tanino,Kogyo Kagaku Zasshi, 65 (1962) 1063 (in Japanese).
B. Bieber, Z. Večeřa,Hutn. Listy, 15 (1960) 397.
P. Dickens, P. König, T. Dippel,Arch. Eisenhüttenw., 34 (1963) 519.
I. Sajó, J. Ujvári,Z. Anal. Chem., 202 (1964) 177.
Yu. Alpatev, B. Boreisha, Yu. Polskii, V. Chervetsov, Radiats. Avtomatika, Izotopy i Yadern, Izlucheniya v Nauke i Tekhn., Akad. Nauk Ukr. SSR, 1960, p. 60;C.A., 62 (1965) 7111d.
J. Stehn, M. Goldberg, B. Magurno, R. Wiener-Chasman (Eds), Neutron Cross Sections, USAEC, BNL-325, 2nd ed. Suppl. No. 2, Vol. 1, 1964.
B. Kenna, F. Conrad, Tabulation of Cross Sections,Q-Values and Sensitivities for Nuclear Reactions of Nuclides with 14 MeV Neutrons, USAEC, SC-RR-66-229, 1966.
C. Lederer, J. Hollander, I. Perlman (Eds), Table of Isotopes, 6th ed., Wiley, New York 1967.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chiba, M., Inoue, Y. & Tajiri, Y. Determination of silicon dioxide in iron and steel-making slags and fluorspars by 14 MeV neutron activation and high-resolution gamma-ray spectrometry. J. Radioanal. Chem. 12, 519–528 (1972). https://doi.org/10.1007/BF02515346
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02515346