Cs-137 and Sr-90 level in diary products

被引：1
作者：
Petukhov, VL
Gorb, TS
Petukhov, IV
Dukhanov, YA
Sevryuk, IZ
Patrashkov, SA
Korotkevich, OS
机构：
[1] Novosibirsk State Agrarian Univ, Res Inst Vet Genet & Anim Breeding, Novosibirsk 630039, Russia
[2] Vitebsk State Acad Vet Med, Vitebsk 210602, BELARUS
来源：
JOURNAL DE PHYSIQUE IV | 2003年 / 107卷
关键词：
D O I：
10.1051/jp4:20030483
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
About 70 % of radioactive substances fell on the territory of the Byelorussia Republic after the Chernobyl Atom Power Station Disaster. Cs-137 and Sr-90 accumulation dynamics was studied in milk of the cows from the highest polluted Braginsky area. 408 milk samples of Black and White cows were investigated. In 1995 average Cs-137 and Sr-90 levels were 61.00 and 3.73 Bk/dm(3) respectively. Cs-137 and Sr-90 levels exceeded Byelorussia Republic upper limits RDU - 96 in 10 and 50 % of milk samples respectively. After 5 years (by 2000) Cs-137 and Sr-90 levels had become almost 3 and 2 times less (21.70 Bk/dm(3) and 1.72 Bk/dm(3) respectively). Cs-137 and Sr-90 levels exceeded RDU - 96 in 1.5 and 5.5 % of milk samples respectively. In the same periods Cs-137 and Sr-90 levels were 7 and 2 times higher than the similar indexes in the relatively clean Novosibirsk area. Thus, radioactive element levels in milk of Black and White cows of the Byelorussia Republic decreased significantly for the past years.
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页码：1065 / 1066
页数：2
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