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KMID : 0364920040290030197
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Journal of Radiation Protection and Research
2004 Volume.29 No. 3 p.197 ~ p.204
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Vertical distirbution of {137}Cs;and; {90}Sr activities in the soils of Korea
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Cha Hyun-Joo
Pakr Doo-Won
Park Hyo-Kuk
Kang Moon-Ja
Lee Wan-No
Choi Keun-Sic
Cho Young-Hyun
Jung Geun-Ho
Lee Haeng-Pil
Shin Hyun-Sang
Lee Chang-Woo
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Abstract
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Vertical distributions of ^{137}Cs;and;^{90}Sr activities are studied for the soils of six areas, Korea (Gori, Yeonggwang, Uljin, Weolseong, Goseong and Jeju). The soils from 6 areas are at geographically different locations with the different environmental conditions and parent rook. The activities of ^{137}Cs;and;^{90}Sr vary N.D.(below detection limit) to 185 Bq/kg and 2.79 - 8.06 Bq/kg, respectively. Activities of ^{137}Cs;and;^{90}Sr show the highest value at the surface soil and decrease with depth. ^{137}Cs activities at the top surface soils are positively correlated with annual precipitation and organic carbon content with little relationship with mean grain size and the clay content. The highest ^{137}Csactivities are found at the Jeju site, followed by the Goseong site of which soils have much different parent rock and textural properties. Though the activities of ^{137}Cs;and;^{90}Sr on the basis of dry weight are higher in Jeju soils than in Goseong soils, their inventories are similar in both soils due to their textural differences.
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KEYWORD
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radioactivity, soil, migration/retention, inventory
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