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A method for analyzing 210po in aerosol

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

Active Publication Date: 2018-12-25
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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  • A method for analyzing 210po in aerosol
  • A method for analyzing 210po in aerosol
  • A method for analyzing 210po in aerosol

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Experimental program
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Embodiment

[0094] From October 2013 to January 2014, aerosol samples were collected by glass fiber filter membrane and polypropylene filter membrane in Taiyuan area. The sampling instrument is a TSP large flow sampler with a flow rate of 1.0m 3 / min. use Figure 5 The self-deposition experimental setup is shown for analytical measurements.

[0095] Such as Figure 5 As shown, the self-deposition experimental device includes an open container 3 for containing the 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 contact with the self-deposition sample solution in the open container 3 . Alternatively, the hollow tube 1 and the sealing plug 2 are an integral structure of glass material, and the open container 3 is also made of glas...

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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, in particular to an aerosol 210 Analytical method of Po. Background technique [0002] After the Fukushima nuclear accident in Japan, my country put forward higher requirements for the construction and operation of nuclear facilities. At the same time, with the increasing requirements of national environmental protection, the continuous strengthening of public environmental awareness and the implementation of energy conservation and emission reduction policies, it is very important to improve the level of relevant analysis technologies and ensure that relevant units can better complete environmental monitoring and evaluation work. significance. 210 Po is 238 Produced by the U decay chain, it is an extremely toxic α-radioactive nuclide, which widely exists in soil, rocks, water bodies, organisms and other environmental media, and can enter the human body through ingesti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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