THE MEASUREMENT OF RADIO-CAESIUM, STRONTIUM AND BARIUM IN RAINWATER
A method is described which was found suitable for the routine measurement of Cs/sup 137/, Sr/sup 90/, and Ba/sup 140/ in rainwater. Carrier solutions were added to a collection tank and radionuclides in the rainwater were subsequently absorbed at 80 deg C on a Dowex 50 ion exchange column. Cesium, strontium, and barium fractions were obtained by successive elutions with 0,7M HCl, 1.5M ammonium lactate pH 7.0, and 4M HCl. The cesium fraction was further radiochemically purified, the carrier recovery for cesium determined by flame photometry, and the activity counted in a gamma spectrometer. The strontium and barium fractions were separately reabsorbed on smaller resin colunms, and the daughters Y/sup 90/ and La/sup 140/ eluted precipitated, weighed as oxalates, and counted in a low-background beta counter. (auth)
- Research Organization:
- New Zealand. Dept. of Scientific and Industrial Research. Div. of Nuclear Sciences, Lower Hutt
- NSA Number:
- NSA-15-010838
- OSTI ID:
- 4089036
- Report Number(s):
- NS-9
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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