Collection device and determination method for determining emission contribution of endogenous greenhouse gases in shallow water body

A technology of greenhouse gas and emission contribution, which is applied in measurement devices, gas analyzer structural details, sampling devices, etc., and can solve problems such as the inability to identify the contribution of individual water bodies.

Active Publication Date: 2021-09-07
CHONGQING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the box method can only measure the greenhouse gas flux at the water-air ...

Method used

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  • Collection device and determination method for determining emission contribution of endogenous greenhouse gases in shallow water body
  • Collection device and determination method for determining emission contribution of endogenous greenhouse gases in shallow water body
  • Collection device and determination method for determining emission contribution of endogenous greenhouse gases in shallow water body

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Experimental program
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Effect test

Embodiment 1

[0066] see Figure 1-4 , the present invention provides the following technical solutions: a collection device for measuring the relative contribution of greenhouse gas emissions, including a bottom ring 3, the bottom ring 3 is 50 cm in height, and the bottom ring 3 is inserted into the bottom of the water to fix it, which is beneficial to the stability of the overall device structure during the entire gas extraction process. The ring 3 includes a top sealed bottom ring 31 and a top open bottom ring. The bottom ring 3 is threadedly connected with an intermediate piece 2. There are multiple intermediate pieces 2, that is, only a few identical intermediate pieces 2 can be spliced ​​to meet the requirements of water body gas. The height of in-situ collection, and the internal upper and lower spaces are consistent as a unit volume, which is convenient for the calculation of the subsequent greenhouse gas flux. Metal material with high compressive strength is conducive to maintainin...

Embodiment 2

[0070] An assay method for a collection device for determining the contribution of internal source greenhouse gas emissions in shallow water, the assay method comprising the steps of:

[0071] Step 1: Pre-measure the actual depth of the shallow water body before gas production, and divide the actual collection and observation objects into three groups;

[0072] The first group: the object of collection and observation is the greenhouse gas emission jointly produced by in-situ sediments and water bodies;

[0073] The second group: the object of collection and observation is the flux of greenhouse gases at the water-air interface;

[0074] The third group: the collection and observation objects are greenhouse gases emitted by water bodies;

[0075] Step 2: Assemble the box body and bottom ring 3 of the corresponding height according to the depth of the water body and the collected observation objects;

[0076] When the collection observation object is the first group, it is ne...

Embodiment 3

[0106] An assay method for a collection device for determining the contribution of internal source greenhouse gas emissions in shallow water, the assay method comprising the steps of:

[0107] Step 1: Pre-measure the actual depth of the shallow water body before gas production, and divide the actual collection and observation objects into three groups;

[0108] The first group: the object of collection and observation is the greenhouse gas emission jointly produced by in-situ sediments and water bodies;

[0109] The second group: the object of collection and observation is the flux of greenhouse gases at the water-air interface;

[0110] The third group: the collection and observation objects are greenhouse gases emitted by water bodies;

[0111] Step 2: Assemble the box body and bottom ring 3 of the corresponding height according to the depth of the water body and the collected observation objects;

[0112] When the collection observation object is the second group, it is nec...

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Abstract

The invention belongs to the technical field of greenhouse gas detection, and provides a collection device and a determination method for determining emission contribution of endogenous greenhouse gases in a shallow water body. The collection device comprises a bottom ring, the bottom ring is in threaded connection with a plurality of middleware, the topmost middleware is in threaded connection with a top ring, water inlets and outlets are formed in the middles of the middleware, sealing cover plates are arranged at the positions corresponding to the water inlets and outlets, and springs are arranged between the sealing cover plates and the middleware. According to the invention, through the arrangement of the middleware, the top ring and the bottom ring, under the combined action of an internal thread and an external thread, the middleware, the top ring and the bottom ring can be combined to form a box body meeting the sampling environment and the required height, and greenhouse gases generated by an in-situ water body, a water-gas interface, sediments and the water body can be respectively collected; and the contribution value of the device to the greenhouse gas emission of the water-gas interface is calculated through a calculation formula, and the device is simple and stable in structure, can be detached and carried and is relatively convenient to use.

Description

technical field [0001] The invention belongs to the technical field of greenhouse gas detection, and in particular relates to a collection device and a measurement method for measuring the contribution of internal source greenhouse gas emissions in shallow water. Background technique [0002] Greenhouse gases in the atmosphere are one of the important factors leading to global warming. Greenhouse gases (CO 2 、CH 4 , N 2 O) emissions have received much attention as an important contributor to global climate change, but the status of GHG emissions in shallow water environments (streams and small rivers) is unclear. The quantification of greenhouse gases in the atmosphere is an important research content to deal with the current global climate and environmental changes. High-quality in-situ monitoring of greenhouse gas emissions in various ecosystems is a key link for accurate assessment. Among them, the quantification of greenhouse gas contribution to shallow water bodies...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N33/00
CPCG01N1/24G01N33/0009G01N2001/242
Inventor 王晓锋李航王继龙
Owner CHONGQING NORMAL UNIVERSITY
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