Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 68(1): 19-24 (2019)

資料Materials (Data)

ナシの摘果果実及び成熟果実の放射性セシウム濃度の比較Comparison of Radiocaesium Concentrations between Japanese Thinned-out Pear Fruit and Ripe Pear Fruit

埼玉県衛生研究所Saitama Prefectural Institute of Public Health ◇ 355–0133 埼玉県比企郡吉見町江和井410–1 ◇ 410–1 Ewai, Yoshimi-machi, Hiki-gun, Saitama Pref. 355–0133, Japan

受付日:2018年8月2日Received: August 2, 2018
受理日:2018年9月1日Accepted: September 1, 2018
発行日:2019年1月15日Published: January 15, 2019


To investigate the predictability of radiocaesium concentrations in the Japanese ripe pear fruits (Hosui and Kosui) based on those in the thinned-out pear fruits before the harvest, radiocaesium concentrations in thinned-out and ripe pear fruits were measured by γ-ray spectrometry. There was no significant difference in 137Cs concentrations of thinned-out and ripe pear fruits between Hosui and Kosui. The concentrations of 137Cs in ripe pear fruits (whole and flesh) were about quarter of those in thinned-out pear fruits. This finding suggests that the radiocaesium concentrations in ripe pear fruits could be predicted from those in thinned-out pear fruits.

Key words: pear; caesium-134; caesium-137; thinned-out fruit; prediction of ripe fruit radioactive caesium concentration

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