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Analysis method of <210>Po in aerosol

A 210po, analysis method technology, applied in the field of radiation environment monitoring, can solve problems such as difficulty in accurate measurement

Active Publication Date: 2017-01-04
CHINA INST FOR RADIATION PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no standard method in this area in our country, and it is difficult to measure accurately, so it is necessary to measure the 210 The analysis method of Po is studied

Method used

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  • Analysis method of &lt;210&gt;Po in aerosol
  • Analysis method of &lt;210&gt;Po in aerosol
  • Analysis method of &lt;210&gt;Po in aerosol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0094] From October 2013 to January 2014, aerosol samples were collected using glass fiber membranes and polypropylene membranes in Taiyuan. The sampling instrument is a TSP high-flow sampler with a flow rate of 1.0m 3 / min. use Figure 5 The self-deposition experimental device shown is analyzed and determined.

[0095] Such as Figure 5 As shown, the self-deposition experimental device includes an open container 3 for containing a self-deposition sample solution, and the opening of the open container 3 is sealed with a hollow tube 1. For example, the opening of the open container 3 can be sealed by a sealing plug 2, and the lower end of the hollow tube 1 passes through the sealing plug 2 and extends into the open container 3 without contacting the self-deposition sample solution in the open container 3. . Alternatively, the hollow tube 1 and the sealing plug 2 are an integral structure made of glass material, and the open container 3 is also made of glass material, and the sea...

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Abstract

The invention relates to an analysis method of <210>Po in aerosol. The analysis method includes steps: (1) acquiring an aerosol sample; (2) adding a tracer <209>Po (IV); (3) adding 6-12 mol / L of hydrochloric acid, leaching <210>Po in the detected sample, performing filtering, evaporating filtrate until the filtrate is almost dry, and cooling the filtrate to a room temperature; (4) adding 0.1-1 mol / L of hydrochloric acid and reducing agents into a filtrate dry product and performing mixing; (5) putting a metal plating sheet whose potential is lower than that of Po (IV) ions into an auto-deposition sample solution, performing heating and sealed condensation, and enabling the Po(IV) ions to be self-deposited on the metal plating sheet; (6) taking out the metal plating sheet, and cleaning and drying the metal plating sheet; (7) measuring the counting of Po; and (8) calculating the activity concentration of <210>Po in the detected sample according to the counting of <209>Po and <210>Po and the activity of <209>Po. By employing the analysis method, high whole recovery rate of <210>Po can be obtained, the stability is good, and the accuracy is high.

Description

Technical field [0001] The invention belongs to the technical field of radiation environment monitoring, and specifically relates to an aerosol 210 Po analysis method. Background technique [0002] After the Fukushima nuclear accident in Japan, my country has put forward higher requirements for the construction and operation of nuclear facilities. At the same time, as the national environmental protection requirements are getting higher and higher, the public’s awareness of environmental protection and the implementation of energy saving and emission reduction policies, it is very important to improve the level of relevant analysis techniques to ensure that relevant units better complete environmental monitoring and evaluation. significance. 210 Po is 238 The extremely toxic alpha radionuclide produced by the U decay chain is widely present in environmental media such as soil, rock, water, organisms, etc. It can enter the human body through ingestion and inhalation, and contribut...

Claims

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Application Information

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IPC IPC(8): G01T1/167
Inventor 李鹏翔李周韩玉虎张静任晓娜王瑞俊高泽全梁丽萍姜凯保莉李园杨宇轩宋沁楠
Owner CHINA INST FOR RADIATION PROTECTION
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