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Low temperature gas chromatography system, low temperature gas chromatography method and low temperature gas chromatography device of volatile organic compound in atmosphere

A volatile organic compound and gas chromatographic analysis technology, applied in the field of chromatographic analysis, can solve the problems of high price, complex equipment, and complicated operation, and achieve the effect of meeting the needs of field observation

Active Publication Date: 2015-07-15
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1
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Problems solved by technology

[0003] At present, a variety of monitoring technologies and methods for the determination of volatile organic compounds in the atmosphere have been developed internationally. There is a large gap in the actual needs of observation

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  • Low temperature gas chromatography system, low temperature gas chromatography method and low temperature gas chromatography device of volatile organic compound in atmosphere

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[0046] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0047] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings ...

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Abstract

The invention discloses a low temperature gas chromatography system, a low temperature gas chromatography method and a low temperature gas chromatography device of a volatile organic compound in atmosphere. The method comprises the steps of collecting a gas sample, and carrying out ozone removal treatment, water removal treatment and enrichment treatment on the collected sample; after the enrichment treatment, separating the sample, and detecting; analyzing the treatment detection result. The low temperature gas chromatography device of the volatile organic compound in the atmosphere adopts a temperature control unit to realize the water removal treatment and the enrichment treatment of the atmospheric sample as well as the low-temperature efficient separation of a single capillary column for low hydrocarbon at the same time. The system, the method and the device are simple and reliable, and can meet various demands for indoor and outdoor atmospheric observation.

Description

technical field [0001] The invention relates to the field of chromatographic analysis, in particular to a low-temperature gas chromatography analysis system, method and device for volatile organic compounds in the atmosphere. Background technique [0002] Volatile organic compounds (VOCs) in the atmosphere mainly come from natural emissions and human use of fossil fuels (coal, oil, and natural gas). This class of compounds contains a large number of organic compounds with high reactivity, which can rapidly react with reactive species in the atmosphere (such as OH radicals and ozone, etc.) to generate organic peroxyl groups, which further participate in the urban NOx-rich atmosphere reaction, producing ozone that has significant negative impacts on humans and ecosystems. In addition, some active volatile organic compounds form secondary organic aerosols through complex processes such as photooxidation in the atmosphere, which can change the radiation balance and affect globa...

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Application Information

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IPC IPC(8): G01N30/88
Inventor 牟玉静刘成堂张成龙张智博刘春山
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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