使用基于各种支持物的亚铁氰化物吸附剂测定天然水和废水中的 137Cs:对比分析

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR Radiochemistry Pub Date : 2024-10-06 DOI:10.1134/S1066362224040118
A. V. Voronina, A. K. Suetina
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引用次数: 0

摘要

研究了在天然水和废水 137Cs 测定法中使用亚铁氰化物吸附剂 NPF-HTD、NPF-C 和 T-35 进行铯浓缩的可能性。结果表明,吸附剂的吸附特性和浓缩物中铯的化学收率达到 98-99% 的条件存在差异。考虑到样品体积与吸附剂在色谱柱中的质量之比、137Cs 的检测效率以及浓缩物测量时间,以达到样品中 137Cs 的最低可检测活度为 0.001-0.01 Bq/L,开发了一种测定天然水和废水中 137Cs 的可变方法。该方法已在斯维尔德洛夫斯克州和车里雅宾斯克州境内的天然水库和河流水域以及长期储存和处理放射性废物地区的监测井水中进行了 137Cs 检测试验。文中提供了有关河水和水库水成分的数据,并说明了浓缩物中的铯化学产量与样本中大成分浓度的关系。
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Determination of 137Cs in Natural Water and Waste Streams Using Ferrocyanide Sorbents Based on Various Supports: a Comparative Analysis

The possibility of using ferrocyanide sorbents NPF-HTD, NPF-C, and T-35 for cesium concentration in the method of 137Cs determination in natural and waste waters has been investigated. Differences in sorption characteristics of sorbents and conditions of cesium concentration to achieve a chemical yield of 98–99% in the concentrate have been revealed. A variable method for determination of 137Cs in natural and waste waters has been developed, taking into account the ratio of sample volume and sorbent mass in the column, the efficiency of 137Cs detection, and the time of concentrate measurement to achieve the minimum detectable activity of 137Cs in the sample of 0.001–0.01 Bq/L. The method was tested for determination of 137Cs in waters of natural reservoirs and rivers in the territories of Sverdlovsk oblast and Chelyabinsk oblast, as well as waters of monitoring wells in the territories of long-term storage and disposal of radioactive waste. The data on the composition of river and reservoir waters are presented, and the dependence of the cesium chemical yield into the concentrate on the concentration of macrocomponents in samples is shown.

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来源期刊
Radiochemistry
Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-
CiteScore
1.30
自引率
33.30%
发文量
51
期刊介绍: Radiochemistry  is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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