Soil hydrogen phosphide stratified sampling device and sampling method

A sampling device and phosphine technology, applied in the field of soil science, can solve the problem of not taking into account the possibility of plant phosphine emission routes, and achieve the effects of convenient portability, operation and simple structure

Active Publication Date: 2017-06-20
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0003] People have done some research on the emission of phosphine gas. In the existing research on the release of phosphine in the terrestrial natural environment, it is believed that the main emission route of phosphine is the soil, and it does not take into account the role of plants in the environment as phosphine. Potential for hydrogen emission pathways

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  • Soil hydrogen phosphide stratified sampling device and sampling method

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[0038] Such as figure 1 shown. The invention discloses a layered sampling device for soil phosphine gas, which includes a first base 7, a partition 6 and a base box 4; the first base 7 has an inner and outer ring, and the outer ring is a water-storable Backwater tank 9, the inner ring is used to place a partition 6 with a round hole 8 in the middle; the lower part of the base box 4 is open and placed on the backwater tank 9, when water is stored in the backwater tank 9, the basic box The lower end of 4 is submerged under the liquid level, which can prevent air leakage; a thermometer and a fan are arranged in the basic case 4.

[0039] The top of described base case 4 has an end cap 10, offers No. 1 sampling port 1 and No. 2 sampling port 2 on the end cap 10; Wherein, the inner mouth of No. 1 sampling port 1 passes through a silica gel tube (not shown in the figure ) passes through the circular hole 8 of the dividing plate 6 and extends below the dividing plate for collecting...

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Abstract

The invention discloses a soil hydrogen phosphide stratified sampling device and sampling method. The soil hydrogen phosphide stratified sampling device comprises a first base, a partition and a base tank, wherein the first base is provided with an internal ring and an external ring; the external ring is a return water tank capable of storing water; the internal ring is used for placing the partition which is provided with a circular hole in the middle; the lower part of the base tank is open, and the base tank is arranged on the return water tank; the top of the base tank is provided with an end cover, and the end cover is provided with two sampling ports; one sampling port penetrates through the circular hole of the partition via a silicone tube and extends to below the partition, and is used for acquiring hydrogen phosphide gas released by soil; and the other one sampling port extends to above the partition via a silicone tube, and is used for acquiring hydrogen phosphide gas released by plants. The soil hydrogen phosphide stratified sampling device can research the contribution rates of different hydrogen phosphide discharge ways, is simple in structure and convenient to operate, is efficient and durable, and is suitable for popularized implementation.

Description

technical field [0001] The invention relates to the technical field of soil science, in particular to a soil phosphine gas layered sampling device and a sampling method thereof. Background technique [0002] Various material cycles in ecosystems are of great significance, and phosphorus is an important limiting factor in various ecosystems, especially in wetland ecosystems. The complex ecological environment and hydrological conditions in the wetland system will affect the biogeochemical cycle of phosphorus, which includes the exchange of phosphorus in water and sediment, the absorption of plants and the transport to the surrounding ecosystem. These processes will directly affect the phosphate metabolism of the wetland system, and when the phosphate content in the wetland system is too high, it will lead to eutrophication of the wetland. Phosphine is a trace gas widely present in the atmosphere. The presence and role of phosphine must therefore be taken into account in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22G01N1/26G01N1/24
CPCG01N1/2294G01N1/24G01N1/26G01N2001/242
Inventor 牛晓君陈伟仡
Owner SOUTH CHINA UNIV OF TECH
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