Plutonium isotopes 238Pu, 239+240Pu, 241Pu and 240Pu/239Pu atomic ratios in the southern Baltic Sea ecosystem

被引：21

作者：

Struminska-Parulska, Dagmara I. ^{[1
]}

Skwarzec, Bogdan ^{[1
]}

机构：

[1] Univ Gdansk, Fac Chem, Analyt & Environm Radiochem Chair, PL-80952 Gdansk, Poland

来源：

OCEANOLOGIA | 2010年 / 52卷 / 03期

关键词：

Plutonium; Pu-238; Pu239+240; Pu-241 and Pu-240/Pu-239 atomic ratio; Baltic Sea; Chernobyl accident; Atmospheric fallout; ACCELERATOR MASS-SPECTROMETRY; ENVIRONMENTAL-SAMPLES; FALLOUT PLUTONIUM; POLONIUM; URANIUM; SOILS; AMS;

D O I：

10.5697/oc.52-3.499

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

The paper summarizes the results of plutonium findings in atmospheric fallout samples and marine samples from the southern Baltic Sea during our research in 1986-2007. The activities of Pu-238 Pu239+240 isotopes were measured with an alpha spectrometer. The activities of Pu-241 were calculated indirectly by Am-241 activity measurements 16-18 years after the Chernobyl accident. The Pu-240/Pu-239 atomic ratios were measured using accelerator mass spectrometry (AMS). The Pu-241 activities indicate that the main impact of the Chernobyl accident was on the plutonium concentration in the components of the Baltic Sea. ecosystem examined in this work. The highest Pu-241/Pu239+240 activity ratio was found in sea water (140 +/- 33). The ANIS measurements of atmospheric fallout samples collected during 1986. showed a significant increase in the Pu-240/Pu-239 atomic ratio from 0.29 +/- 0.04 in March 1986 to 0.47 +/- 0.02 in April 1986.

引用

页码：499 / 512

页数：14

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