RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
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Volume 38, Issue 11
Displaying 1-7 of 7 articles from this issue
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  • Behavior of Radionuclies during the Combustion of Liquid Scinti-Cocktail Waste in an Incinerator
    Toshio ISHIYAMA, Yatsuka MATSUDA, Tadao MATSUNAMI, Masahiro DOI, Hiros ...
    1989 Volume 38 Issue 11 Pages 453-460
    Published: November 15, 1989
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_453
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    Behavior of radionuclides and stable isotopes during the combustion in an incinerator equipped with cooling and collecting apparatus was studied. Following results were obtained. (1) P and Ca were both in particulate states in the exhaust gas, whereas those in the cooling water were both in particulate and water-soluble states. (2) About 40% of P was retained on the inner wall of the incinerator. (3) Both S and C were dominant in gaseous states in the exhaust gas, and their collection efficiencies with 1N CsOH were 89% and 46%, respectively. The collection efficiencies of gaseous S and C in aqueous NH4OH were found to be 95% and 91%, respectively, as calculated from activity of precipitates of Ba35SO4 and Ba14CO3.
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  • Development of Radioaerosol Exposure Equipment and Preliminary Experiment
    Kei YANAGISAWA, Hiroshi KAMADA
    1989 Volume 38 Issue 11 Pages 461-464
    Published: November 15, 1989
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_461
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    An aerosol exposure equipment was developed in order to investigate foliar uptake-translocation of radionuclides in plant. Fine and misty radioactive aerosol was generated by using an ultrasonic viblator and introduced into an exposure vessel, in which a piece of plant leaf was exposed. The radioactive mist was completely trapped by main and back up filters.
    Foliar uptake-translocation of 60Co in bell pepper plant was studied by using the equipment.
    Three days after exposure the exposed leaf of the plant was washed with water.
    About 70% of the deposited activities was removed by washing. Only 0.5% was found in the fruit.
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  • Decontamination Efficiency of a Sheet of Vinyl Wall Paper as a Surface Material in a Radioisotope Laboratory
    Kazuhiko FURUKAWA, Kanako FUNADERA
    1989 Volume 38 Issue 11 Pages 465-468
    Published: November 15, 1989
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_465
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    It has long been desired to prevent surface mateirals from cracking in a radioisotope laboratory. We applied a sheet of nonflammable wail paper, vinyl cloth, as a surface material to cover concrete wall. It was sufficiently resistant to the reinforced concrete wall cracking. The efficiency of the decontamination of the vinyl cloth was compared with those of stainless steel, iron and painted plates. The contamination and decontamination indices were determined in these surface materials after contamination with [32P] orthophosphate (pH 3, 7 and 11) for 0 to 48 h. Both of the indices of the vinyl cloth were higher than those of the other materials. Further, it was confirmed that the vinyl cloth was resistant to acid and alkaline conditions and radioisotopes could not be permeable. The wipe of efficiency was also investigated in these materials by use of several decontamination detergents. In any reagents tested, the wipe off efficiency of the vinyl cloth was more than 80%. Thus, the vinyl cloth could be used for the surface material and is. one of good surface materials in a radioisotope laboratory.
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  • Shortening Method for the Assay with Centocor Radioimmunoassay Kit
    Akiyoshi MATSUKURA, Yasufumi NAKAZAWA, Setsuo HAMA
    1989 Volume 38 Issue 11 Pages 469-472
    Published: November 15, 1989
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_469
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    We have conducted a series of basic studies about CENTOCOR's CA125 RIA Kit, especially for the conditions of the incubation.
    The standard curve and the outcome of recovery test gained through the standard method and the shortening method are quite decent. As for the incubation time, it took longer than 20 hours and 6-18 hours in standard method and shortening one respectively.
    As our conclusion, these results suggest that shortening method can be adopted as a practical one as well as the standard method, provided that careful attention is paid to several peripheral conditions in the assay.
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  • Bone Mineral Assessment
    Hideo YAMADA
    1989 Volume 38 Issue 11 Pages 473-484
    Published: November 15, 1989
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_473
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  • Measurement of Radiation Energy and Its Application
    II. Radiation detectors for energy measurement (continued)
    Tamaki WATANABE
    1989 Volume 38 Issue 11 Pages 485-496
    Published: November 15, 1989
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_485
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  • [title in Japanese]
    1989 Volume 38 Issue 11 Pages A75P-A114M
    Published: November 15, 1989
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.38.11_A75P
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