Sample rapid digestion method for detecting radionuclide

A radionuclide and sample technology, which is applied in the field of radionuclide detection, can solve the problems of long sample digestion time, failure to meet the rapid and large-throughput detection requirements, and large reagent consumption, so as to shorten the digestion time and shorten the measurement. Time, the effect of reducing the cost of analysis
CN109239759AInactive Publication Date: 2019-01-18国家海洋局南海环境监测中心
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
国家海洋局南海环境监测中心
Publication Date
2019-01-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a sample rapid digestion method for detecting radionuclide. The method comprises the following steps: (1) weighing a sample, and placing the sample in a microwave digestion tank; (2) adding a digestion solution to the sample, and carrying out microwave digestion in a microwave digestion apparatus; (3) determining the volume of a sample solution after microwave digestion obtained in step (2) to obtain a sample liquid to be tested. In a microwave digestion procedure, the power is 500-800 W, the temperature is 35-130 DEG C, and the reaction time is 25-200 min. According tothe sample rapid digestion method for detecting the radionuclide, the heating is fast, the temperature rise is high, the digestion capacity is strong, the volume of sample digestion is large, and thedigestion time is greatly shortened; the acid solvent consumption is less, and the blank value is low; the sample loss is avoided, and the accuracy and precision of the analysis is improved; the operation is simple, fast, accurate and efficient; the environmental pollution is small, and the working environment is improved; the consumption of electricity is effectively saved, the analysis cost isreduced, and green environmental protection is achieved.
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Description

technical field

[0001] The invention relates to the technical field of radionuclide detection, in particular to a method for rapidly digesting samples to determine radionuclide. Background technique

[0002] Microwave is a kind of electromagnetic wave, which is an electromagnetic wave with a frequency of 300MHz to 300GHz (wavelength in the range of 100cm to 1mm). Internationally, the frequency of civilian microwaves in industry, scientific research, medicine and household use is 2450±50MHz. Because microwave has efficient and uniform heating effect on substances, and the rate of chemical reaction has a significant relationship with temperature, people think of applying microwave to chemical reaction to increase the reaction rate. Although the use of microwaves can greatly speed up chemical reactions and consume very little energy, the use of microwaves can also save energy (Jin Qinhan et al., 1999, P30-31). In 1975, Abu-samra and others used microwave ovens to digest some ...

Claims

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