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静岡大学地球科学研究報告 (1975-) >
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タイトル: 大気エアロゾル中の^<32>Pの測定法の検討
その他のタイトル: Analytical method of ^<32>P in atmospheric aerosol
著者: 栗本, 卓
鈴木, 款
掲載誌名: 静岡大学地球科学研究報告
出版者: 静岡大学地球科学教室
巻: 24
開始ページ: 79
終了ページ: 86
出版日付: 1997-07
NDC: 450
抄録: Cosmic ray produced ^<32>P(t_<1/2>=14.3days;E_<max>=1.71MeV) is a powerful tracer of physical and biological processes and the short time scales of atmospheric and upper ocean P cycling. In spite of their tremendous potential for tracing processes involving phosphorus in the environment, the very low activities in nature have impeded their use in biogeochemistry. In order to determine the low-level beta activities of ^<32>P in nature, sample concentration and/or extraction from large volumes of samples are required with a low-level β counting in the field. Preconcentration of the activity in aerosol is achieved here by various concentrating methods. Low-level β counting is achieved by liquid scintillation counting and low background counting. The result of measurement of the activity in aerosol by liquid scintillation counting at Shizuoka University (34°58'N, 138°24'E) ranged from 0.0010±0.0002 to 0.003l±0.0002dpm / m^3 (dpm : disintegrations per minute). Decay-curve in low background counting confirms the existence of ^<33>P(t_<l/2> = 25.3days;E_<max> = 0.25MeV).
ISSN: 03886298 OPAC
NII論文ID: 110000413381 ciniia
NII書誌ID: AN00103190 OPAC ciniib
バージョン: publisher
出現コレクション:1997 24

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