茶树中¹³⁷Cs的自然有效半衰期。

Natural effective half-life of 137Cs in tea plants.

作者信息

Unlü M Y, Topçuoğlu S, Küçükcezzar R, Varinlioğlu A, Güngör N, Bulut A M, Güngör E

机构信息

Cekmece Nuclear Research and Training Center P.K.1, Istanbul, Turkey.

出版信息

Health Phys. 1995 Jan;68(1):94-9. doi: 10.1097/00004032-199501000-00012.

DOI:10.1097/00004032-199501000-00012

PMID:7989202

Abstract

Contamination levels and variation of 137Cs in tea plant leaves from 1986-1992 were determined over the coast line of the Eastern Black Sea region in Turkey. The decrease of 137Cs radionuclide concentration in tea plant leaves may be described by a double exponential function with 94.8% activity lost with a Teff of 125 d and 5.2% activity lost with a Teff of 1,114 d.

摘要

对土耳其东黑海地区海岸线沿线1986年至1992年茶树叶片中137Cs的污染水平及变化情况进行了测定。茶树叶片中137Cs放射性核素浓度的下降可用双指数函数来描述，有效半衰期为125天的部分损失了94.8%的活度，有效半衰期为1114天的部分损失了5.2%的活度。