Radioecological impacts of the Techa River contamination.
Radioecological impacts of the Techa River contamination.
复制标题
特查河污染的放射生态影响。
DOI：
10.1097/00004032-200007000-00008
复制
发表时间：
2000
期刊：
影响因子：
2.2
通讯作者：
I. Y. Popova
中科院分区：
文献类型：
--
作者：
A. Akleyev;V. A. Kostyuchenko;L. M. Peremyslova;V. Baturin;I. Y. Popova
1949-1952年期间，加工武器级钚的Mayak生产协会向Techa河排放放射性废物。因此，河流系统的所有组成部分（水、底层土壤和洪泛平原）都暴露在大量的放射性污染中。20世纪50年代采取的保护措施改善了Techa河的放射生态条件。1952年以后，该地区的放射生态条件主要由长寿命放射性核素9 OSr和137 Cs决定。本文重点介绍的依赖关系的放射性核素迁移沿着垂直和水平平面在不同的组成部分的河流系统超过40年的时间。90年代以前，滨江村落的环境样品和食品中的~（90）Sr和~（137）Cs含量一直呈下降趋势。在随后的几年里，特查河的放射生态学情况稳定下来。目前河流污染的来源是旁路运河和沼泽上游的径流。
During the years 1949-1952, the Mayak Production Association (MAYAK), which was processing weapons-grade plutonium, was discharging radioactive wastes into the Techa River. As a result, all components of the river system (water, bottom soils, and flood plains) were exposed to massive radioactive contamination. The protective measures taken in the 1950's resulted in the improvement of the radioecological conditions in the Techa River. After 1952, the radioecological conditions in the area were mostly determined by the long-lived radionuclides 9OSr and 137Cs. This article focuses on the dependencies governing the migration of radionuclides along the vertical and horizontal planes in different components of the river system over a 40-y period. Until the 1990's, a decrease in 90Sr and 137Cs contents was noted in environmental samples and foodstuffs produced in riverside villages. In the subsequent years, the radioecological situation on the Techa stabilized. The sources of the current contamination of the river are represented by the runoffs from by-pass canals and swampy upper reaches.