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A sample preparation device for measuring strontium-90 in low-salinity water

A low-salinity, -90 technology, used in the preparation of test samples, etc., to shorten the processing time and process

Active Publication Date: 2020-01-03
SUZHOU NUCLEAR POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no sample preparation device for the measurement of strontium-90 in water at home and abroad. In order to reduce the cost of analyzing samples, it is necessary to develop a sample preparation device for the measurement of strontium-90 in water, so as to facilitate the analysis of low-salinity environmental samples and nuclear samples. Strontium-90 measured in facility liquid effluent samples

Method used

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  • A sample preparation device for measuring strontium-90 in low-salinity water

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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Such as figure 1 The shown sample preparation device for measuring strontium-90 in low-salinity water mainly includes a purification component 1 , a mixing component 2 and a filtering component 3 .

[0022] Wherein, the purification assembly 1 includes a water tank 11 and a filter 12 arranged in the water tank 11 . The mixing assembly 2 includes a water storage tank 21 communicated with the filter 12, an agitator 22 installed in the water storage tank 21, and a plurality of dosing devices 27 communicated with the water storage tank 21 for adding chemical reagents therein. The filter assembly 3 includes a filtrate collector 31 communicated with the water storage tank 21 and a strontium diaphragm 35 installed on the filtrate collector 31 (ie, a strontium solid-phase extraction diaphragm for extracting strontium-90 in water).

[0023]...

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Abstract

The invention relates to a sample preparation device for measuring strontium-90 in low-salinity water. The sample preparation device comprises a purification assembly, a mixing assembly and a filtering assembly, wherein the purification assembly comprises a water tank and a filter arranged in the water tank; the mixing assembly comprises a water storage tank communicated with the filter, a stirrer arranged in the water storage tank and a plurality of chemical feeders communicated with the water storage tank and used for adding chemical reagent into the water storage tank; the filtering assembly comprises a filter liquor collector communicated with the water storage tank and a strontium membrane arranged on the filter liquor collector. By adopting the purification assembly, the mixing assembly and the filtering assembly which have specific structures, the strontium-90 in water body can be collected by the strontium-90 membrane. Thus, more samples can be processed in a short time, and the processing time and the processing flow are greatly shortened.

Description

technical field [0001] The invention belongs to the field of environmental monitoring and relates to a sample preparation device, in particular to a sample preparation device for measuring strontium-90 in low-salinity water. Background technique [0002] Strontium-90 (ie 90 Sr) is the fission product of U-235 and Pu-239, mainly from nuclear weapon explosions and nuclear reactors. In a nuclear power plant reactor, it may enter the primary circuit of the reactor due to the defect or damage of the fuel cladding, and discharge to the environment along with the liquid radioactive effluent. Strontium-90 is a pure β radionuclide with a half-life of 28.8 years, which is a highly toxic nuclide; among radioactive strontium isotopes, strontium-90 is the most harmful because of its long physical and biological half-life (49.3 years) and will Persistently deposited in the hematopoietic skeletal system, replacing calcium to cause radiation sickness (such as leukemia); at the same time, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/34G01N1/38
CPCG01N1/34G01N1/38
Inventor 吴连生左伟伟陈超峰黄彦君单征贺毅钦红娟张兵
Owner SUZHOU NUCLEAR POWER RES INST