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首页> 外文期刊>Journal of Radioanalytical and Nuclear Chemistry: An International Journal Dealing with All Aspects and Applications of Nuclear Chemistry >Determination of activity ratios of ~(238,239+240,241)Pu, ~(241)Am, ~(134,137)Cs, and ~(90)Sr in Bulgarian soils
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Determination of activity ratios of ~(238,239+240,241)Pu, ~(241)Am, ~(134,137)Cs, and ~(90)Sr in Bulgarian soils

机译：保加利亚土壤中〜（238,239 + 240,241）Pu，〜（241）Am，〜（134,137）Cs和〜（90）Sr活度比的测定

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摘要

The origins of different artificial radionuclides found in soils from Northern and Southern Bulgaria was determined by measurements of their actual concentrations and respective ratios. On the basis of the measured mobility and concentrations of the investigated radionuclides in soils, it was estimated that after the Chernobyl accident the mean depositions of fresh ~(137)Cs were 3.0 ± 2.5 kBq/m~2 for Northern Bulgaria and 15 ± 7 kBq/m~2 for Southern Bulgaria. As a result of global fallout following atmospheric nuclear weapon tests in the 1950s, mean depositions (corrected to 1965) were calculated for Northern and Southern Bulgaria as follows: for ~(90)Sr-1.0 ± 0.5 and 2.3 ± 1.3 kBq/m~2, ~(238)Pu-1.3 ± 0.8 and 2.8 ± 1.6 Bq/m~2, ~(239+240)Pu-15 ± 14 and 47 ± 38 Bq/m~2, and ~(241)Pu-520 ± 200 and 760 ± 260 Bq/m~2.
机译：保加利亚北部和南部土壤中发现的不同人工放射性核素的起源是通过测量其实际浓度和各自的比例来确定的。根据测得的土壤中放射性核素的迁移率和浓度，估计切尔诺贝利事故后，保加利亚北部〜（137）Cs的平均沉积量为3.0±2.5 kBq / m〜2，保加利亚北部为15±7保加利亚南部，kBq / m〜2。由于1950年代进行大气核武器试验后全球范围的沉降，保加利亚北部和南部的平均沉积量（校正至1965年）计算如下：〜（90）Sr-1.0±0.5和2.3±1.3 kBq / m〜 2，〜（238）Pu-1.3±0.8和2.8±1.6 Bq / m〜2，〜（239 + 240）Pu-15±14和47±38 Bq / m〜2，和〜（241）Pu-520 ±200和760±260 Bq / m〜2。

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