DETERMINATION OF SR-90 IN ENVIRONMENTAL-SAMPLES WITH RESONANCE IONIZATION SPECTROSCOPY IN COLLINEAR GEOMETRY

被引：12

作者：

ZIMMER, K

STENNER, J

KLUGE, HJ

LANTZSCH, J

MONZ, L

OTTEN, EW

PASSLER, G

SCHWALBACH, R

SCHWARZ, M

STEVENS, H

WENDT, K

HERRMANN, G

NIESS, S

TRAUTMANN, N

WALTER, K

BUSHAW, BA

机构：

[1] UNIV MAINZ, INST KERNCHEM, D-550099 MAINZ, GERMANY

[2] PACIFIC NW LAB, RICHLAND, WA 99352 USA

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1994年 / 59卷 / 02期

关键词：

D O I：

10.1007/BF01081161

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new, fast technique for trace analysis of the radioactive isotopes Sr-89 and Sr-90 in environmental samples has been developed. Conventional mass separation is combined with resonance ionization spectroscopy in collinear geometry, which provides high selectivity and sensitivity. In addition, a chemical separation procedure for sample preparation has been developed. The described technique was used to determine the Sr-90 content in almost-equal-to 870 m3 air samples collected near Munich during and shortly after the Chernobyl reactor accident in April 1986. The content of Sr-90 was measured to be 1.4 mBq per m3, corresponding to 1.6 x 10(9) atoms of Sr-90 per sample. This value is in good agreement with the results of radiochemical measurements.

引用

页码：117 / 121

页数：5

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