Device and method for detecting volatile gas in medium

Abstract

The embodiment of the invention provides a device and method for detecting volatile gas in a medium. The device comprises a plurality of gas collection probes, a filter, a dehumidifier and detection equipment; the collection probes are used for collecting sample gas at different points in the medium; the input end of the filter is connected with the plurality of gas collection probes, and the filter is used for filtering and dedusting the sample gas collected by the plurality of gas collection probes; the first input end of the dehumidifier is connected with the output end of the filter, and the dehumidifier is used for dehumidifying the filtered sample gas; and the detection equipment is connected with the first output end of the dehumidifier and is used for analyzing the dehumidified sample gas and detecting the volatile gas. According to the technical schemes of the invention, one set of device can collect sample gas at different point locations in the medium so as to perform detection; the sample gas is subjected to pretreatment of filtering, dust removal and dehumidification, so that distortion of monitoring data is avoided or reduced, the quality of the monitoring data is improved, and the accuracy of a detection result is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a detection device and method for volatile gas in a medium. Background technique [0002] The country vigorously promotes the construction of ecological civilization, and has issued a series of policies and regulations to continuously strengthen the protection of soil and groundwater. With the rise of soil remediation technology, the detection of volatile gases in soil has become a key factor in the soil environmental evaluation and remediation process. Existing volatile gas detection technologies and equipment in soil have various disadvantages during use, such as: measurement data is easily affected by particulate matter and humidity, and the equipment has no sampling preprocessor, which leads to serious distortion of monitoring data and reduces detection The accuracy of the results will affect the service life of the monitoring equipment; in addition, one dev...

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Problems solved by technology

[0003] The embodiment of the present invention provides a detection device for volatile gas in a medium to solve the technical problems of low accuracy and high cost of multi-point monitoring in the prior art.

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