Messung der Krypton-85-und Xenon-133-Aktivität der atmosphärischen Luft / A Method for Measurement of the Krypton-85 and Xenon-133-content in the Atmosphere

Stockburger, H.; Sartorius, Hartmut

doi:10.1515/zna-1977-1108

Cited by 38 publications

(9 citation statements)

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“…Details of the BfS system are given in Stockburger et al (1977). Samples of about 10 m 3 of air 15 m above the ground have been collected at the MRI on a near weekly basis since May 1, 1995.…”

Section: Measurement Of Atmosphericmentioning

confidence: 99%

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

Inoue

Matsueda²,

Igarashi³

et al. 2006

Journal of the Meteorological Society of Japan

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Since February 1992, measurements of atmospheric CO 2 at 200 m above the ground have been taken from a meteorological tower (lat 36.1 N, long 140.1 E, 25 m a.s.l.) in Tsukuba, central Japan. We have examined seasonal /long-term variations in atmospheric CO 2 , based on atmospheric 85 Kr, a noble gas with well-known source and sink terms, monitored continuously at weekly intervals in Tsukuba since May 1995. During the annual cycle, the daily mean values of atmospheric CO 2 in the afternoons (1300-1600 JST) showed maximum in late April, except in 2002, and minimum in late August or early September. The seasonal variations in atmospheric 85 Kr, which is low in summer and high in winter, were caused by the seasonal variations in the large-scale atmospheric circulation, and latitudinal distribution of atmospheric 85 Kr. Compared with seasonal variations in atmospheric 85 Kr, the draw-down (DD) and buildup (BU) for atmospheric CO 2 occurred about 1 week and 3 weeks later, respectively. The peak-totrough amplitude of de-trended seasonal variations in atmospheric CO 2 concentrations ranged from 11 to 14 ppm. A decrease in the seasonal CO 2 minimum occurred with a decrease in the 85 Kr concentration, showing the effect of air mass transport from different origins. Unlike the minimum, the maximum CO 2 did not vary as expected from the air mass transport. The daily mean values of atmospheric CO 2 increased at an average rate of 2.0 ppm yr À1 , with a range from À0.5 to 4 ppm yr À1 . While both CO 2 and

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Section: Measurement Of Atmosphericmentioning

confidence: 99%

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

Inoue

Matsueda²,

Igarashi³

et al. 2006

Journal of the Meteorological Society of Japan

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“…The BfS-IAR method is characterized by the combination of gas chromatography with activity measurement using a gas flow GM counter. 14 A schematic diagram of the 85 Kr measurement system at the MRI, details of the system and measurement procedures with photographs are given elsewhere. 19 In order to collect 85 Kr, 10 m 3 of air are introduced during 1 week into a metal adsorbent vessel (60 mm diameter, about 650 mm height; designed and produced by BfS-IAR, distributed by Repic, Tokyo, Japan) with constant suction by an air pump (No.…”

Section: Sampling Proceduresmentioning

confidence: 99%

“…The BfS-IAR method is characterized by its combination of gas chromatographic separation and gas activity counting, using pure CH 4 as both carrier and counting gas. 14 Also, the BfS-IAR has maintained a monitoring network over the globe with dense stations in Europe for more than two decades. 15 More sensitive methodologies using mass spectrometry 16,17 and atom trap analysis 18 have been reported recently.…”

Section: Introductionmentioning

confidence: 99%

85Kr measurement system for continuous monitoring at the Meteorological Research Institute, Japan

Igarashi

Aoyama

Nemoto

et al. 2001

J. Environ. Monitor.

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A 85Kr measurement system for continuous monitoring based principally on the BfS-IAR method (activity measurement of 85Kr by gas counting coupled with gas chromatographic separation, using pure CH4 as carrier and Counting gas) was implemented for the first time in Japan. In this paper, a detailed description of the system and procedures is given and the inter-comparison results of our system with the BfS-IAR system are presented. A consistent temporal concentration change with high accuracy and consistency of the respective data with the BfS-IAR data (maximum difference of 5%) were achieved with the Meteorological Research Institute (MRI) system, which shows that the system is valid and reliable for the purpose of background monitoring for 85Kr in air. Also, the 85Kr monitoring record at the MRI during 1995-2001 is described. The record distinctively shows the Northern Hemispheric background 85Kr concentrations at the mid-latitude and the elevated concentrations affected by the operation of a nuclear fuel reprocessing plant in Tokai-mura, Ibaraki. Japan.

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“…The analysis of atmospheric 85 Kr was performed at JCAC, using an analytical apparatus modified by the Meteorological Research Institute [3,4], based on techniques developed by BfS [5,6]. The analysis of 133 Xe was carried out using commercial instrumentation (Institute für angewandte Isotopen-, Gas-und Umweltuntersuchungen, Germany) based on the principal method developed at BfS [7].…”

Section: Methodsmentioning

confidence: 99%

“…In addition, the Xe measurement system provides no specific information with regard to 133 Xe radiation energy levels, since it simultaneously determines the contributions of all Xe isotopes in the sample. Regardless, it was assumed that all radiation counts were due to 133 Xe for the purposes of calculating the 133 Xe activity concentration in the present study [6,7].…”

Section: Determination Of 85 Kr and 133 Xe Activitiesmentioning

confidence: 99%

Atmospheric⁸⁵Kr and¹³³Xe activity concentrations at locations across Japan following the Fukushima Dai-ichi Nuclear Power Plant accident

Nitta

Sanada

Isogai

et al. 2014

Journal of Nuclear Science and Technology

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Messung der Krypton-85-und Xenon-133-Aktivität der atmosphärischen Luft / A Method for Measurement of the Krypton-85 and Xenon-133-content in the Atmosphere

Abstract: To measure the

Cited by 38 publications

References 0 publications

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

85Kr measurement system for continuous monitoring at the Meteorological Research Institute, Japan

Atmospheric⁸⁵Kr and¹³³Xe activity concentrations at locations across Japan following the Fukushima Dai-ichi Nuclear Power Plant accident

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Messung der Krypton-85-und Xenon-133-Aktivität der atmosphärischen Luft / A Method for Measurement of the Krypton-85 and Xenon-133-content in the Atmosphere

Abstract: To measure the

Cited by 38 publications

References 0 publications

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

Seasonal and Long-Term Variations in Atmospheric CO2 and 85Kr in Tsukuba, Central Japan

85Kr measurement system for continuous monitoring at the Meteorological Research Institute, Japan

Atmospheric85Kr and133Xe activity concentrations at locations across Japan following the Fukushima Dai-ichi Nuclear Power Plant accident

Contact Info

Product

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About

Atmospheric⁸⁵Kr and¹³³Xe activity concentrations at locations across Japan following the Fukushima Dai-ichi Nuclear Power Plant accident