Determination of Sr-90 in the Vetebrae of Reference Korean

표준 한국인 척추골내의 Sr-90 함량 측정에 관한 연구

  • Yung Jin Kim (Department of Biology, Chungnam National University) ;
  • Gook Hyun Chung (Department of Biology, Chonbug National University)
  • Published : 1984.09.01

Abstract

The determination of Sr-90 in 93 Korean vertebrae was carried out using modified method of tri-n-butyl phosphate extraction. As a result, the average content of Sr-90 in Korean vertebrae was 2.29 pCi/g Ca in the female and 1.73 pCi/g Ca in the male and the average level of both sexes was 2.01 pCi/g Ca, which was slightly higher than those of other countries. On the other hand, the Sr-90 injected into intraperitonal cavity of rat was accumulated in bones mostly and distributed evenly to various types of hones. The rate of accumulation and removal was not dependent on the amount of Sr-90 injected and over one half Sr-90 injected was accumulated in bones within one day and then it was removed gradually after two days from the injection.

Tri-n-butyl phosphate를 이용한 Sr-90의 정량법에 전처리 과정을 도입시킨 방법을 적용하여 한국인 93명의 척추골내 Sr-90의 함량을 측정하였다. 그 결과 Sr-90의 함량은 여자의 경우 2.29 pCi/g Ca로 나타났고, 남자의 경우 1.73 pCi/g Ca로 나타났으며 남녀 전체적으로 2.01 pCi/g Ca의 평균값을 나타내 외국의 경우보다 다소 높은 값을 나타내었다. 한편 쥐의 복강내에 Sr-90을 주입시켜 각 골조직내의 Sr-90함량을 측정한 결과 주입된 Sr-90은 골조직의 종류에 상관없이 골고루 분포되었으며 주입된 전체 Sr-90의 약 반이 1일 이내에 각 골조직에 침적되었으며 그 이후 점차적으로 제거되는 것을 관찰할 수 있었다.

Keywords