Radiocontamination of the Environment and its Effects on the Mother and Fetus III, PART I–RETENTION OF CESIUM 137 DURING PREGNANCY: AN INTER-LABORATORIES STUDY

Title: Radiocontamination of the Environment and its Effects on the Mother and Fetus III, PART I–RETENTION OF CESIUM 137 DURING PREGNANCY: AN INTER-LABORATORIES STUDY

Author: Sternberg J, Nagai T, Fujimori H, Kimura Y.

Reference: International Journal of Applied Radiation and Isotopes, 1970, Vol. 21, pp. 351-362.

DOI: http://dx.doi.org/10.1016/0020-708X(70)90147-X

Keywords: radiocontamination, environment, cesium 137, strontium 90, pregnancy

Abstract: The determination of cesium 137 and strontium 90 in human placments was carried out in different laboratories in Japan and Canada, in order to standardize the radioassay procedures. Placentas from normal term deliveries were collected and measured for a period of 12–16 months in the Tokyo and Osaka areas in Japan and in the Montreal area in Canada.

Two procedures required the ashing of the entire placenta prior to radioassay. In the Tokyo group, the ashed organ was placed in a two NaI crystal system, in an almost 4π geometry, and the γ radiation was measured. The Osaka group continues the chemical separation of cesium by precipitation with chloroplatinate; the β radiation is then further measured with an anticoincidence system.

URL: http://www.sciencedirect.com/science/article/pii/0020708X7090147X#

キーワードタグ

前後へのリンク