Determination of Trace Fluoride Ion in Contaminated Water by 14 MeV Neutron Activation Analysis
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概要
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<I>The determination of trace fluorine in contaminated water has been investigated by combining a concentration technique with the fast neutron activation analysis utiliz-ing the reaction of </I><SUP>19</SUP>F (<I>n, 2n</I>) <SUP>18</SUP>F.<BR><I>An amount of 1%</I> AgNO<SUB>3</SUB> <I>solution was added to one liter of sample water to remove</I> Cl<SUP>-</SUP> <I>as</I> AgCl. <I>The filtrate was dropped through a column of 5 ml Dowex-2X anion exchange resin of acetate type. The resin was washed, dried and packed in a polyethylene capsule of 3 ml capacity. Three samples prepared in this way and one monitoring sample</I> (CaF<SUB>2</SUB>) <I>were simultaneously irradiated by a neutron beam with the flux of 5×10<SUP>9</SUP>-1×10<SUP>10</SUP>n/sec for 20 min. They were cooled for 100 min and the radioactivity of 0.511 Me V γ-photo peak from each sample was successively counted for 10 min.</I><BR><I>Fluoride ion at the level of 1 ppm was found to be determined without any interferences due to coexistent ions in water sample by the present analytical procedure.</I>
- 社団法人 日本アイソトープ協会の論文
社団法人 日本アイソトープ協会 | 論文
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