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Sampling method for liquid samples in hot cell

A liquid sample and hot cell technology, used in radiation measurement, instruments, etc., can solve the problems of high labor intensity of operators, high radiation protection risks, inconvenient transfer of reagents, etc., to ensure accuracy, avoid cross-contamination, and reduce usage. effect of life

Active Publication Date: 2014-09-03
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor sampling accuracy, high labor intensity of operators, low sampling efficiency, inconvenient transfer of reagents from the outside of the hot chamber to the inside, and high risk of radiation protection in the existing liquid sample sampling method in the hot chamber, the present invention provides A method for sampling liquid samples in a hot chamber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Adopt the sampling method of the liquid sample in the heat chamber of the present invention to take 1mL liquid sample A from the inside of the heat chamber and add it to the container D, and take parallel sampling 5 times; get 1.5mL liquid sample B from the outside of the heat chamber and also add it to the container D, and take parallel sampling for 5 times times; the sampling results obtained by converting the weight into volume are as follows:

[0028] times

1

2

3

4

5

RSD

internal sampling

0.992

0.989

0.996

0.994

0.994

0.27％

external sampling

1.494

1.497

1.503

1.494

1.499

0.25％

Total

2.486

2.486

2.499

2.488

2.493

0.22％

[0029] From the above sampling results, it can be seen that the relative label deviation (RSD) of the sampling volume inside and outside the hot chamber is less than 0.3%. For hot chamber sampling, the accuracy and preci...

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Abstract

The invention relates to a radioactive substance transfer method and provides a sampling method for liquid samples in a hot cell, so as to solve the problems that the sampling accuracy is poor, the labor intensity of an operator is high, the sampling efficiency is low and the like in the prior sampling method for the liquid samples in the hot cell. The method comprises the following steps: a dilution liquid dispensing apparatus and a fluorinated ethylene propylene tube form sampling equipment, and liquid for sealing and a certain amount of air control liquid samples to be transferred inside the hot cell inside the fluorinated ethylene propylene tube; and liquid sample transfer from outside the hot cell to inside the hot cell can be finished in a mode of direct injection by the sampling equipment. The sampling method for liquid samples in a hot cell has the advantages that sampling accuracy is good, the labor intensity of the operator is low, the sampling efficiency is high, reagent transfer from outside the hot cell to inside the hot cell is excessively convenient, and the radiation protection risk is low, and the problems of equipment maintenance and waste processing can be well solved.

Description

technical field [0001] The invention relates to a method for transferring radioactive substances, in particular to a method for sampling liquid samples in a hot chamber. Background technique [0002] When performing operations such as analysis on high-radioactive liquid samples, it is usually necessary to perform quantitative sampling and dilution of samples in a hot chamber. Because the radioactivity in the hot cell is very high, and it is operated by manipulators, the application of many sampling techniques is limited, and it also brings problems such as high labor intensity for operators and low reliability of quantitative sampling. [0003] Commonly used manual sampling techniques mainly use devices such as pipettes and sampling guns. Since the operation of manipulators is far less flexible than that of human hands, and the sensitivity to resistance is not sensitive enough, it is difficult to directly apply conventional sampling techniques in hot cells. At present, in t...

Claims

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Application Information

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IPC IPC(8): G01T7/02
Inventor 邓惟勤谈树苹陶苗苗吴继宗郝小娟赵立飞陈强郭奇平
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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