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Technical Reports of the Meteorological Research Institute

No. 54

Establishment of a cold charcoal trap-gas
chromatography-gas counting system for ⁸⁵Kr
measurements in Japan and results from 1995 to 2006

Michio Aoyama, Kenji Fujii, Katsumi Hirose,
Yasuhito Igarashi, Keisuke Isogai, Wataru Nitta,
Hartmut Sartorius, Clemens Schlosser, Wolfgang Weiss

MARCH 2008
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	Preface
	Abstract
	Contents
	List of Tables and Figures
1	Introduction
2	Instruments of cold charcoal trap - gas chromatography - gas counting system of 85Kr
3	Standard gas for 85Kr measurement
4	Atmospheric 85Kr in Japan
	Acknowledgements
	References
Appendix 1	Chromatograms of the system
Appendix 2	Program of the system
Appendix 3	Hardware specifications of the system
Appendix 4	85Kr measurement system for continuous monitoring at the Meteorological Research Institute, Japan