Onderzoek naar de radioactiviteit van depositie. Resultaten over 1989
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Type
Report
Language
nl
Date
1990-12-31
Research Projects
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Journal Issue
Title
Onderzoek naar de radioactiviteit van depositie.
Resultaten over 1989
Translated Title
Monitoring of radioactivity in deposition. Results
for 1989.
Published in
Abstract
Abstract niet beschikbaar
This report summarizes the results of measurements of radionuclides deposited at Bilthoven in the Netherlands in 1989. The total depositions of H-3 (1560+-130 Bq/m2), Be-7 (740+-40 Bq/m2), Pb-210 (94+-7 Bq/m2) and Po-210 (24+-4 Bq/m2) were not substantially changed compared to those in previous years. The same applies to the deposited gross alpha- (43+-1 Bq/m2), gross beta- (89+- 3 Bq/m2), gross gamma-activity (128 +- 5 Bq/m2). The depositions of Cs-134 and Cs-137 were <2,6 Bq/m2 and <3 Bq/m2 respectively. In 1988 these depositions were <5 Bq/m2 and <6 Bq/m2. The weekly deposition of gross gamma-activity, H-3 and Be-7 were correlated with the amount of precipitation. In 1989 the consequences of "Chernobyl" were no longer perceptible in the deposition in the Netherlands.
This report summarizes the results of measurements of radionuclides deposited at Bilthoven in the Netherlands in 1989. The total depositions of H-3 (1560+-130 Bq/m2), Be-7 (740+-40 Bq/m2), Pb-210 (94+-7 Bq/m2) and Po-210 (24+-4 Bq/m2) were not substantially changed compared to those in previous years. The same applies to the deposited gross alpha- (43+-1 Bq/m2), gross beta- (89+- 3 Bq/m2), gross gamma-activity (128 +- 5 Bq/m2). The depositions of Cs-134 and Cs-137 were <2,6 Bq/m2 and <3 Bq/m2 respectively. In 1988 these depositions were <5 Bq/m2 and <6 Bq/m2. The weekly deposition of gross gamma-activity, H-3 and Be-7 were correlated with the amount of precipitation. In 1989 the consequences of "Chernobyl" were no longer perceptible in the deposition in the Netherlands.
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HIMH/TK