Method and device for detecting CO2 carbon isotope by infrared spectrum

An infrared spectrum and carbon isotope technology, which is applied in the field of CO2 carbon isotope infrared spectrum detection devices, can solve the problems that real-time and online detection cannot be realized, and achieve the effect of broadening the scope of application fields

Active Publication Date: 2013-05-15
合肥中科环境监测技术国家工程实验室有限公司
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Problems solved by technology

[0005] The object of the present invention is to provide a CO 2 Carbon isotope infrared spectroscopy detection device to solve the traditional detection of CO 2 Carbon isotope ratio technology cannot realize real-time and online detection of defects

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  • Method and device for detecting CO2 carbon isotope by infrared spectrum

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Embodiment Construction

[0024] CO 2The carbon isotope infrared spectrum detection device includes a reflecting pool, an infrared light source, an off-axis parabolic reflector, and an interferometer are arranged at the light entrance of the reflecting pool, an infrared detector connected to a computer is arranged at the light outlet of the reflecting pool, and the inlet of the reflecting pool is The port is connected through a three-way valve with an input containing CO 2 The input gas path of the gas to be tested and the input of the gas to be tested are known δ 13 CO 2 value of standard CO 2 The standard gas of the gas is input into the gas path, and the infrared light source radiates infrared light with continuous infrared light waves. The infrared light is collimated by the off-axis parabolic reflector and modulated by the interferometer, and then enters the reflective pool from the light entrance of the reflective pool, and enters the reflective pool. After multiple reciprocating reflections, ...

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Abstract

The invention discloses a method and a device for detecting CO2 carbon isotope by infrared spectrum; and the device comprises a reflecting pool, an infrared source, an off-axis parabolic mirror, an interferometer, an infrared detector connected with a computer, a target gas input gas circuit used for inputting CO2-containing target gas, and a standard gas input gas circuit used for inputting standard CO2 gas with the known delta 13 CO2 value. The method and the device can be used for obtaining the delta 13 CO2 value of the detected gas according to the infrared spectrum acquired by the infrared detector.

Description

Technical field [0001] The invention involves environmental monitoring technology and analysis and optical technology fields, which are specifically a CO 2 Carbon isotonon -infrared spectrum detection device. Background technique [0002] CO 2 It is one of the most important greenhouse gases in the atmosphere. Due to the different processes of physics, chemistry, and biological changes in different isotopes, analyze CO 2 Carbon is compatible to determine the source and exchange of carbon elements, and provide data support for global carbon emission budgets.In recent years, CO 2 The detection technology of gas carbon isotope ratio has been widely used in multiple research fields.For example: In the field of environmental science and ecosystem science, most of the energy conversion process in nature will be accompanied by CO 2 However, different carbon isotopes reflect different response processes, revealing the different influences of natural factors such as soil, plants and other...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 徐亮李相贤高闽光王亚萍石建国童晶晶金岭李胜
Owner 合肥中科环境监测技术国家工程实验室有限公司
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