- 著者
-
柏森 伸子
村上 直行
小西 徹也
- 出版者
- Japan Radioisotope Association
- 雑誌
- RADIOISOTOPES (ISSN:00338303)
- 巻号頁・発行日
- vol.36, no.6, pp.278-281, 1987
- 被引用文献数
-
2
1
<I>The fallout caused by the accident of Chernobyl' nuclear reactor has been monitored in Niigata City (April 30-June 3, 1986) . Twelve nuclides</I> (<SUP>131</SUP>I, <SUP>132</SUP>I, <SUP>129</SUP>Te, <SUP>129m</SUP>Te, <SUP>132</SUP>Te, <SUP>134</SUP>Cs, <SUP>136</SUP>Cs, <SUP>137</SUP>Cs, <SUP>103</SUP>Ru, <SUP>99m</SUP>Tc, <SUP>140</SUP>La, <SUP>140</SUP>Ba) <I>were identified in aerosol samples. The same nuclides plus</I> <SUP>7</SUP>Be <I>were identified in rain-water. Gaseous and particle-bound</I> <SUP>131</SUP>I <I>were separately trapped on a glass filter and a charcoal filter, respectively. Results indicate 50-60% of atmospheric</I> <SUP>131</SUP>I <I>is gaseous and the rest is particlebound. Chloroform extraction of rain-water revealed that 40-60% of</I> <SUP>131</SUP>I <I>in the rain-water sample exists in the form of</I> IO<SUB>3</SUB><SUP>-</SUP> <I>and</I> <SUP>131</SUP>IO<SUB>3</SUB><SUP>-</SUP> (<SUP>131</SUP>IO<SUB>4</SUB><SUP>-</SUP>) /<SUP>131</SUP>I<SUP>-</SUP> <I>seemed to increase with the lapse of time after the accident.</I>