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Nitrogen oxide and peroxyacetyl nitrate combined online detection device and method

A technology of peroxyacetyl nitrate and detection device, which is applied in the direction of chemiluminescence/bioluminescence, and analysis through chemical reaction of materials to achieve high sensitivity, eliminate mutual interference, and high response speed

Active Publication Date: 2019-05-14
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There are also reports in the international literature that this method is used to detect the concentration of PAN in the atmosphere, but it needs to use chromatography to realize the concentration of NO in the gas. 2 separation

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  • Nitrogen oxide and peroxyacetyl nitrate combined online detection device and method
  • Nitrogen oxide and peroxyacetyl nitrate combined online detection device and method
  • Nitrogen oxide and peroxyacetyl nitrate combined online detection device and method

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Embodiment Construction

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0033] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0034] The structure and principle of the combined on-line detection device for nitrogen oxides and peroxyacetyl nitrate of the present invention will be described in detail below.

[0035] figure 1 A structural schematic diagram of a combined online detection device for nitrogen oxides and peroxyacetyl nitrate according to an exemplary embodiment of the present invention is shown.

[0036] Such as figure 1 As shown, according to an exemplary embodiment of the present invention, the combined online...

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Abstract

The invention discloses a nitrogen oxide and peroxyacetyl nitrate united online device and method. The device comprises a detection module, a liquid way module and a gas way module, the detection module comprises a detection main body, a liquid inlet, a liquid outlet, a gas inlet and a gas outlet, the liquid way module comprises a detection reagent storage unit, a liquid way switching electromagnetic valve, a liquid incoming pump, a liquid suction pump and a waste liquid storage unit, and the gas way module comprises a nitrogen dioxide photolysis unit, an acetone gas generation unit, a NOx-PAN conversion unit, a gas way switching electromagnetic valve, a waste gas treatment unit, a flow controller and a gas suction pump. The method includes adopting the device for united online detection of concentration of nitrogen oxide and peroxyacetyl nitrate in air. Mutual interference in the process of detecting PAN and NO2 along is eliminated, simultaneous online detection of nitrogen oxide and peroxyacetyl nitrate is realized, and the device has the advantages of high sensitivity, high response speed, high stability and high selectivity.

Description

technical field [0001] The invention relates to the technical field of gas detection, and more specifically, to a combined online detection device and method for nitrogen oxides and peroxyacetyl nitrate. Background technique [0002] Nitrogen oxides are one of the key objects of atmospheric environmental monitoring. Among them, nitrogen dioxide is one of the main pollutants in the atmosphere, its photolysis is an important source of tropospheric ozone, and the reaction product of nitric acid with hydroxyl radicals is one of the main causes of acid rain. Nitrogen dioxide can also cause regional environmental problems by reacting with atmospheric organic peroxy radicals to generate peroxyacetyl nitrate gas (PAN). Therefore, the accurate determination of nitrogen oxides and PAN in the atmosphere is of great significance for understanding the mechanism of air pollution, judging the degree of air pollution, determining the source of pollution, early warning of air quality, and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
CPCG01N21/76
Inventor 王竹青付大友袁东谭文渊杨冰黄勇
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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