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
CN104777261AActive Publication Date: 2015-07-15RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Publication Date
2015-07-15

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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.
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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...

Claims

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