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<14>C sample preparation system for both hydrogen method and zinc method

A sample preparation and 14C technology, applied in the field of 14C sample preparation system, can solve the problems of high price, low yield and complexity of equipment comparison, and achieve the effects of excellent chemical stability, low expansion coefficient and simple preparation method.

Pending Publication Date: 2018-07-20
GUANGXI NORMAL UNIV
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  • Claims
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Problems solved by technology

Various methods can also obtain graphite with better performance, but in general, the comparison of various methods, the catalytic method has high yield, less pollution, easy operation, and simple equipment, and the yield of common methods is relatively low. Equipment comparison Expensive and complicated

Method used

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  • &lt;14&gt;C sample preparation system for both hydrogen method and zinc method
  • &lt;14&gt;C sample preparation system for both hydrogen method and zinc method
  • &lt;14&gt;C sample preparation system for both hydrogen method and zinc method

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Embodiment Construction

[0056] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0057] Such as figure 1 As shown, a dual-purpose hydrogen method and zinc method 14 C sample preparation system, including a vacuum pump 1, a liquid nitrogen cooling pump 2, a vacuum tube 3, a first quartz tube 4 and a second quartz tube 5. The vacuum pump 1 and the liquid nitrogen cooling pump 2 communicate with each other through pipelines. One end of the first quartz tube 4 communicates with the liquid nitrogen cooling pump 2, and the other end extends and communicates with the outside of the liquid nitrogen cooling pump 2 to form an exhaust port 6, and in the middle of the first quartz tube 4 A U-shaped pipe 7 is formed, and the two ends of the U-shaped pipe 7 are provided with a first valve 8 and a second val...

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Abstract

The invention relates to a <14>C sample preparation system for both hydrogen method and zinc method. The main application of the <14>C sample preparation system is to prepare a <14>C sample and supplyraw materials to an AMS (accelerator mass spectrometry) accelerator. After a primary sample is taken, the <14>C sample can be prepared by the system with the hydrogen method and the zinc method. Thesystem adopts glass as a main structural material, and mainly comprises four parts: a vacuum power treatment part, a sample vacuumization part, a CO2 purification part and a CO2 reduction part. The system comprises main components as follows: reaction devices, valves, cold traps, resistance wires, pressure vacuum gauges, a muffle furnace, a reaction furnace and the like. The preparation system hasthe characteristics as follows: the sample can be prepared with the hydrogen method and the zinc method simultaneously, a high-vacuum system is utilized efficiently, the system is high in safety coefficient, relatively low in manufacturing cost, compact in structure and convenient to operate, mutual pollution is avoided, and working level of an assembly line is improved.

Description

technical field [0001] The present invention relates to 14 C sample preparation field, specifically related to a hydrogen method and a zinc method dual-purpose 14 C sample preparation system. Background technique [0002] Carbon is one of the important elements in nature, and it participates in the mutual circulation process among different environments such as atmospheric environment, biological environment and geological environment in nature. Carbon is an important element in the natural cycle of the earth, from the atmosphere (CO 2 , CH 4 ) environment to surface water such as rivers, seas and lakes (CO 3 2 , HCO 3 - ) to the terrestrial environment (CaCO 3 , graphite); carbon in biological environments (organic carbon, CH 2 O) play an important role in the cycle (provide energy, participate in metabolism). [0003] Carbon has 8 isotopes. 9 C. 10 C. 11 C. 15 C. 16 C is a product of an artificial nuclear reaction with a very short half-life and does not exi...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 沈洪涛
Owner GUANGXI NORMAL UNIV
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