A New Pretreatment Technique for Environmental Tritium Analysis with Microwave Heating Method

The conventional method for FWT and OBT analysis is a liquid scintillation counting method after freeze-drying and combustion of the sample. However, pretreatment for FWT and OBT analysis are complicated and time consuming processes over weeks. Thus, we propose the application of microwave heating t...

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Bibliographic Details
Published in:Plasma and Fusion Research 2016/03/04, Vol.11, pp.2405017-2405017
Main Authors: AKATA, Naofumi, TANAKA, Masahiro, TAKAYAMA, Sadatsugu, KAKIUCHI, Hideki, TAMARI, Toshiya, SANO, Saburo
Format: Article
Language:English
Subjects:
Drying
FWT
Gas flow
Heating
microwave
Microwave heating
OBT
Pretreatment
Recovery
Scintillation counters
Thermal analysis
Tritium
Tritium analysis
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Summary:The conventional method for FWT and OBT analysis is a liquid scintillation counting method after freeze-drying and combustion of the sample. However, pretreatment for FWT and OBT analysis are complicated and time consuming processes over weeks. Thus, we propose the application of microwave heating technique to save time and effort of the pretreatment of plant samples for FWT analysis. To understand the behavior of the combustion and drying of organic samples, we conducted TG/DTA analysis of pine needle samples. It is found that the sample has to be heated up to 100 - 110 ◦C for complete drying under N2 gas flow condition. Then, we tried the water recovery from fresh pine needle samples by the multi-mode microwave heating system. As a results, it was provided to good recovery yield achieved more than 97% under these experimental conditions. This result shows more preferable for the pretreatment of organic samples by microwave irradiation method than the conventional method.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.11.2405017