Abstract
Chlorine, bromine and iodine (hereafter, halogens) were detemined for rock samples by radiochemical neutron activation analysis. The powdered samples and reference standards prepared from chemical reagents were simultaneously irradiated for 10 to 30 minutes with or without a cadmium filter in a TRIGA-II reactor at the Institute for Atomic Energy, Rikkyo University. The samples were subjected to radiochemical procedures of halogens immediately after the irradiation. Iodine was firstly precipitated as PdI2, and chlorine and bromine were successively precipitated as Ag-halides at the same time. In this study, geological standard rocks, sedimentary rocks and meteorites were analyzed for trace halogens. In some Antarctic meteorites, iodine contents were observed to be anomalously high. Chlorine contents also are somewhat high. The overabundance of iodine and chlorine must be caused by terrestrial contamination on the Antarctica.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. Mason, Principles of Geochemistry, 4th ed., John Wiley & Sons, New York, 1982.
H. J. M. Bowen, Environmental Chemistry of the Elements, Academic Press, New York, 1979.
E. Anders, N. Grevesse, Geochim. Cosmochim. Acta, 53 (1989) 197.
M. Ebihara, N. Saito, H. Akaiwa, J. Radioanal. Nucl. Chem., 108 (1986) 241.
M. Ebihara, N. Saito, H. Akaiwa, K. Tomura, Anal. Sci., 8 (1992) 183.
T. Shinonaga, K. Endo, M. Ebihara, K. G. Heumann, H. Nakahara, Geochim. Cosmochim. Acta, 58 (1994) 3735.
T. Shinonaga, M. Ebihara, H. Nakahara, K. Tomura, K. G. Heumann, Chem. Geol., 15 (1994) 213.
M. Ebihara, N. Saito, H. Akaiwa, K. Tomura, Radioisotopes, 40 (1991) 433.
H. Akaiwa, E. Tajima, S. Aizawa, Chikyu-kagaku, 12 (1978) 1.
W. R. Van Schmus, J. A. Wood, Geochim. Cosmochim. Acta, 31 (1967) 747.
E. Jarosewich, R. S. Clarke, Jr., J. N. Barrows, Smithson. Contrib. Earth. Sci., 27 (1987) 1.
B. Mason, Data of Geochemistry, 6th ed., U. S. Govt. Print. Off., Washington, 1977.
G. Dreibus, H. Wänke, L. Schultz, Workshop on Antarctic Meteorites,J. Annexstad et al. (Eds), LPI Tech. Rept. 86-01, 1986, p. 34.
K. G. Heumann, J. Neubauer, H. Weiss, Geochim. Cosmochim. Acta, 51 (1987) 2541.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ebihara, M., Ozaki, H., Kato, F. et al. Determination of chlorine, bromine and iodine in rock samples by radiochemical neutron activation analysis. J Radioanal Nucl Chem 216, 107–112 (1997). https://doi.org/10.1007/BF02034504
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02034504