|
KMID : 0364920120370040167
|
|
Journal of Radiation Protection and Research
2012 Volume.37 No. 4 p.167 ~ p.172
|
|
|
Assessment of 137Cs for Selection of Reference Site of In Situ Gamma Spectrometry in Some Areas of Jeju Island
|
|
Kim Chang-Jong
Cho Yoon-Hae
Kang Tae-Woo
Ko Seok-Hyung
Yun Ju-Yong
Lee Dong-Myung
|
|
|
Abstract
|
|
|
|
Jeju Island is a significant area as a reference site of in situ gamma spectrometry because there are a number of open spaces which includes 137Cs above a certain level. In this paper, the pasture within the Hallasan National Park was selected as one of the open spaces of Jeju Island. The homogeneity of 137Cs at the site was assessed by analysis of variance on count and by radioactivity concentration obtained through in situ gamma spectrometry. For this purpose, the count of a total of 79 points at 3 sites were measured with less than count uncertainty of 5% for 2000 seconds. In the results of the analysis of variance, the 2 sites were homogeneous, and the remaining 1 site can be specified to be homogeneous through the adjustment of measuring range. The distribution of radioactivity concentration calculated by in situ gamma spectrometry were 53.7∼93.2 Bq kg-1, 30.5∼61.0 Bq kg-1 and 48.8∼102 Bq kg-1 at each site.
|
|
|
KEYWORD
|
|
|
In situ gamma spectrometry, Reference site, 137Cs, Jeju
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|