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Atmospheric OH radical measurement system and method

A measurement system and technology for free radicals, which are used in material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of atmospheric OH radical sensitivity and low accuracy, and achieve the effect of high sensitivity and accuracy

Active Publication Date: 2018-05-25
安徽中科春谷激光产业技术研究院有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low sensitivity and low accuracy of direct measurement of atmospheric OH free radicals in traditional technology

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Embodiment Construction

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of th...

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Abstract

The invention provides an atmosphere OH free radical measurement system, comprising a first laser, a detection cavity, a fluorescence spectrum detector and a data processing device, wherein a first laser beam emitted by the first laser is incident to the detection cavity, the detection cavity is internally filled with a gas sample, OH free radicals are activated to emit fluorescent light in the detection cavity, the fluorescent light is analyzed and processed by the fluorescence spectrum detector and the data processing device, and the measurement system also comprises an ozone measuring device for measuring ozone concentration in the detection cavity, a first light path adjustment piece and a second light path adjustment piece. The invention also provides a measurement method adopting the atmosphere OH free radical measurement system.

Description

technical field [0001] The invention relates to the field of environmental monitoring, especially the field of atmospheric measurement, in particular to a system and method for measuring atmospheric hydroxyl (OH) free radicals. Background technique [0002] Atmospheric measurement is of great significance to environmental protection. OH radicals are the most important oxidants in the atmosphere. Almost all oxidizable trace gases in the tropospheric atmosphere are converted and removed mainly by reacting with OH radicals. The OH radical reaction is the natural and artificial Emitted trace components provide important mechanisms for transformation and removal. Therefore, the measurement of OH radicals is of great significance to environmental protection, but the concentration of OH radicals in the atmosphere is extremely low (10 5 ~10 6 molecule / cm 3 ), and will vary drastically with time and space, so accurate measurement of OH radicals in the atmosphere has been a major ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
Inventor 王欢
Owner 安徽中科春谷激光产业技术研究院有限公司