Radioactive contamination of the Yenisei River

被引：55

作者：

Vakulovsky, SM

Kryshev, II

Nikitin, AI

Savitsky, YV

Malyshev, SV

Tertyshnik, EG

机构：

[1] Institute Experimental Meteorology, SPA 'Typhoon', 82 Lenin Av., Obninsk, Kaluga Region 249020, Russia

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1995年 / 29卷 / 03期

关键词：

Aquatic organisms - Near zone - Radioactive contamination - Technogenic activity - Yenisei river;

D O I：

10.1016/0265-931X(95)00033-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Based on observational data in the period 1971-1993, radioactive contamination of the Yenisei River ecosystem was analysed within 2000 km of the sire of discharges from the Krasnoyarsk Mining and Chemical Industrial Complex. Data on the content of Na-24, P-32, (SC)-S-46, Cr-51, Mn-54, Mn-56, Co-58, Ca-60, Fe-59, Zn-65, Sr-90, Zr-95, Nb-95, (103)RU, (106)RU, (CS)-C-134, (CS)-C-137, Ba-140, Ce-141, Ce-144 and Np-239 in the river ecosystem components were generalised. Radioactive contamination of water in the near zone of discharges (within 15km) was shown to be determined mainly by the short-lived nuclides, such as Na-24, (32)p, Mn-56 and Np-239, well as Cr-51. Outside the near zone the water contamination level decreased appreciably. According to observational data of 1973, the total contamination inventory of the river bottom in the near zone was as great as 5800 kBq m(-2). More than half was accounted for by two radionuclides: Cr-51 and Zn-65. At a distance of1930 km from the site of discharges a tecknogenic activity of bottom sediments amounted to 5 kBq m(-2) and was accounted for by Cs-137 and Zn-65. Th, main radionuclide accumulated in fish was (32)p. Exposure doses to aquatic organisms and population were assessed in the near and far zones of the Krasnoyarsk radioactive contamination trace. Within 250 km of the site of discharges the exposure dose to the population from a consumption of I kg of fish was shown to amount to an average of 10 mu Sv(.)

引用

页码：225 / 236

页数：12

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