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Novel device for determining release flux of water diffusing type methane

A release flux, diffusion-type technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems affecting research progress, diffusion-type methane measurement failure, methane concentration fluctuations, etc., to achieve the effect of improving the success rate of measurement

Pending Publication Date: 2017-08-18
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, the static chamber method is susceptible to the interference of methane bubbles. The entry of methane bubbles causes the fluctuation of methane concentration in the static chamber, resulting in the failure of the diffusion-type methane measurement, which seriously affects the progress of related research.

Method used

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  • Novel device for determining release flux of water diffusing type methane
  • Novel device for determining release flux of water diffusing type methane
  • Novel device for determining release flux of water diffusing type methane

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 , 2 As shown in the embodiment of the present invention, a novel device for measuring the diffusion-type methane release flux of the water body is disclosed. The funnel 6 is vertically placed under the static box 4, and the opening at the bottom of the inverted funnel 6 completely covers the bottom opening of the static box 4. 6 open edges of inverted funnel stretch out static case 4 bottom edges 2-5cm, and the vertical distance of the open edge of inverted funnel 6 and the bottom open edge of static case 4 is 2-4cm. The static box 4 is cylindrical in shape, the axis of the inverted funnel 6 coincides with the axis of the static box 4, the methane bubble gas outlet on the top of the inverted funnel 6 passes through the top surface of the static box 4 and is located above the static box 4, and the top of the static box ...

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Abstract

The invention discloses a novel device for determining release flux of water diffusing type methane. The novel device comprises a static box and an inverted funnel, wherein the bottom of the inverted funnel is opened; the inverted funnel is placed below the static box; a top methane air bubble outlet penetrates through the top surface of the static box and is positioned above the static box; and a diffusing type methane taking opening is formed in the top of the static box. According to the novel device, the funnel is arranged under the static box in an inverted manner and is used for collecting methane air bubbles, the methane air bubbles are prevented from entering the static box to interfere determination of the diffusing methane, and therefore, methane determination success rate is increased.

Description

technical field [0001] The invention relates to a device for measuring the diffusion-type methane release flux of a water body, and belongs to the field of measuring devices for the release flux of greenhouse gas in a water body. Background technique [0002] In recent years, climate warming has led to frequent occurrence of extreme weather events such as droughts, floods, and hurricanes. As the second largest greenhouse gas, methane contributes 20% to the greenhouse effect. Natural water bodies are considered to be one of the main sources of methane release. Taking lakes as an example, methane emission is 8-48Tg yr -1 , accounting for 6-16% of the total global release. At present, the field of methane release in water has become a research hotspot at home and abroad. [0003] The solubility of methane in water is low, when the water temperature is 20°C, the solubility is only 1.6mol m -3 . Therefore, when a large amount of methane is produced in sediments, it can be r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 陈求稳施文卿秦伯强朱琳姬雨雨陈宇琛林育青胡柳明
Owner NANJING HYDRAULIC RES INST
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