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Shallow lake greenhouse gas in-situ collection device

A technology of greenhouse gas and collection device, applied in the direction of sampling device, etc., can solve the problems of inability to collect gas, air impact, difficulty in collection, etc., to achieve smooth air intake and water output, ensure air intake and water effect, and improve accuracy. Effect

Inactive Publication Date: 2014-04-09
HOHAI UNIV
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  • Application Information

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Problems solved by technology

[0005] There are the following difficulties in collecting the amount of greenhouse gases released in the lake sediment: 1. The mud-water interface is located at the bottom of the lake, so it is impossible to collect gas in situ by conventional sampling methods, and the overflow of greenhouse gases in the sediment diffuses irregularly , difficult to collect and easily oxidized; 2. The air in the experimental device has a great impact on the collected greenhouse gas samples, and how to accurately obtain the amount of released gas is also a technical problem

Method used

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  • Shallow lake greenhouse gas in-situ collection device
  • Shallow lake greenhouse gas in-situ collection device
  • Shallow lake greenhouse gas in-situ collection device

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Embodiment Construction

[0022] The structure of the present invention is as figure 1 As shown, it is mainly composed of an in-situ gas extraction system, a gas storage system, and a gas sample collection system; the in-situ gas extraction system and the gas storage system are connected by a gas transmission pipe (9), and the in-situ gas extraction system is fixed Above, the gas storage system floats on the lake through the floating device (13); the gas sample collection system is connected to the top of the gas storage system through the exhaust pipe (18), and the gas collection system is placed on the sampling boat.

[0023] The in-situ gas extraction system is composed of a plastic casing (2), a cylindrical box (4), a filter screen (5), a retractable agitator (1), a retractable grip rod (7), etc., the cylindrical The bottom of the box body (4) is open, the top is connected with the plastic sleeve (2), and the upper right part has an air outlet (8); the plastic sleeve (2) is equipped with a retracta...

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Abstract

The invention relates to a shallow lake greenhouse gas in-situ collection method and a device thereof. The device comprises an in-situ gas collection system, a gas storage system, and a gas sampling system, wherein the in-situ gas collection system can be fixed in lake sediments, the upper end of the in-situ gas collection system is connected with the gas storage system, the gas storage system floats on the water surface and collects greenhouse gases released from the sediments by using draining method, and the purified greenhouse gases are injected into a vacuum aluminum foil bag through a plastic syringe to store. The device has the advantages of smart design and simple operation, can effectively collect the greenhouse gases released from the lake sediments by using draining method, can eliminate the error of the sampling process caused by air in the device, and has high precision.

Description

technical field [0001] The invention relates to an in-situ collection device for greenhouse gases in shallow lakes, in particular to a device capable of collecting greenhouse gases in lake sediment per unit volume. Background technique [0002] With the continuous progress of society and the continuous development of industrial economy, human beings are also facing the problem of ecological system destruction. In recent years, climate anomalies have not only been reflected in the emergence of extreme weather (extremely cold and extremely hot) and increased drought and flood disasters, but have also led to the melting of glaciers around the world and rising sea levels. Atmospheric greenhouse gases (CO 2 、CH 4 etc.) is the decisive factor leading to the above problems. Greenhouse gases absorb long-wave radiation from sunlight and reflect it back to Earth, thereby reducing the net emission of energy into outer space, leading to warming of the atmosphere and Earth's surface. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/24
Inventor 张松贺王超王沛芳姜圣韬顾桔郭川惠玉鑫
Owner HOHAI UNIV
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