Advertisement

Journal of Radioanalytical and Nuclear Chemistry

, Volume 196, Issue 2, pp 295–302 | Cite as

Determination of organic, inorganic and particulate iodine in the coastal atmosphere of Japan

  • S. Yoshida
  • Y. Muramatsu
Article

Abstract

A reliable method for the sampling and analysis of atmospheric iodine species was developed. The air filtering system consisted of a 0.4 μm Nuclepore® filter, 47 mm in diameter, for particulate collection followed by two, 47 mm in diameter, cellulose filters for inorganic iodine collection. The latter filters had been impregnated with 1N LiOH in a 10% glycerol-water mixture. The organic iodine was collected by two beds holding 0.2 g of fibriform activated charcoal produced from phenol resin. Supplementation of the charcoal with triethylendiamine (TEDA) enhanced the sorption ability for gaseous iodine. The filters were analyzed by neutron activation analysis. The background radioactivity could be reduced by using the fibriform activated charcoal due to the low content of impurities in the phenol resin. The background count for128I (443 keV) obtained from the fibriform activated charcoal was about one order of magnitude lower than that of the conventional granular one (plant origin). Approximate detection limits for particulate, inorganic and organic iodine were 1, 0.5 and 0.5 ng/m3, respectively, when 50 m3 of air was sampled by this system. The air was sampled at two locations along the coast of Ibaraki, Japan. The concentration ranges of particulate, inorganic and organic iodine were 0.3–3.4, 1.2–3.3 and 7.8–20.4 ng/m3, respectively. Almost 90% of the atmospheric iodine was in a gaseous form in which organic iodine was dominant.

Keywords

Iodine Activate Charcoal LiOH TEDA Sorption Ability 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Y. MIYAKE, S. TSUNOGAI, J. Geophys. Res., 68 (1963) 3989.Google Scholar
  2. 2.
    J. A. GARLAND, H. CURTIS, J. Geophys. Res., 86 (1981) 3183.Google Scholar
  3. 3.
    R. J. CICERONE, Rev. Geophys. Space Phys., 19 (1981) 123.Google Scholar
  4. 4.
    Y. MURAMATSU, S. YOSHIDA, Atmos. Env., 29 (1995) 21.Google Scholar
  5. 5.
    J. E. LOVELOCK, R. J. MAGGS, R. J. WADE, Nature, 241 (1973) 194.PubMedGoogle Scholar
  6. 6.
    R. A. RASMUSSEN, M. A. K. KHALIL, R. GUNAWARDENA, S. D. HOYT, J. Geophys. Res., 87 (1982) 3086.Google Scholar
  7. 7.
    K. A. RAHN, R. D. BORYS, R. A. DUCE, Science, 192 (1976) 549.Google Scholar
  8. 8.
    E. L. BUTLER, Ph.D. Dissertation, Univ. Rhode Island, 1986.Google Scholar
  9. 9.
    Y. MURAMATSU, S. YOSHIDA, J. Radioanal. Nucl. Chem., 169 (1993) 73.Google Scholar
  10. 10.
    H. TSUKADA, J. ISHIDA, O. NARITA, Atmos. Env., 25A (1991) 905.Google Scholar
  11. 11.
    W. C. CHAMEIDES, D. D. DAVIS, J. Geophys. Res., 85 (1980) 7383.Google Scholar

Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • S. Yoshida
    • 1
  • Y. Muramatsu
    • 1
  1. 1.Division of RadioecologyNational Institute of Radiological SciencesHitachinaka-shi, IbarakiJapan

Personalised recommendations