Abstract
A household dehumidifier was used to collect the moisture from air without the need of air pump and desiccants. The continuously collected water samples were enriched by alkaline electrolytic method and the concentration of tritium was measured by a liquid scintillation counting system. The minimum detectable concentration of this method was 30pCi/l·water (0.48pCi/m3·air) which is much lower than the enriched tritium concentration of the environmental air samples. To observe the influence of the 25th nuclear denotation of mainland China on the atmospheric tritium concentration of Taiwan, 73 samples were continuously collected and measured in Kaohsiung. Data showed that the variation of tritium concentrations in the atmosphere were in good agreement with the variation of meteorological conditions. This showed that the developed method was available and reliable for the measurement of tritium concentration in the atmospheric water vapor.
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