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A soil sediment dgt sampling device and method

A sampling device and sediment technology, applied in the direction of sampling device, etc., can solve the problem that the DGT sampler cannot realize field sampling, etc., and achieve the effects of avoiding insufficient dripping water, being convenient to carry, and reducing water evaporation.

Active Publication Date: 2022-08-05
NAT RESERACH CENT OF GEOANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a soil sediment DGT sampling device and sampling method, in order to solve the problem that existing DGT samplers cannot realize field sampling

Method used

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  • A soil sediment dgt sampling device and method
  • A soil sediment dgt sampling device and method
  • A soil sediment dgt sampling device and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A specific embodiment of the present invention discloses a soil sediment DGT sampling device, which is used to collect soil or sediment samples in the field, such as Figure 1 to Figure 4 As shown, the soil sediment DGT sampling device includes:

[0052] The dripping mechanism includes a dripping pipeline and a container 2. The container 2 is used to store pure water. The container 2 is connected to the dripping pipeline. The pure water in the container 2 drips continuously to the soil surface of the sampling point through the dripping pipeline, so that the soil of the sampling point is continuously dripped. The surface layer 9 remains wet;

[0053] DGT sampler 1, the DGT sampler 1 is placed on the soil surface layer 9 in a wet state, and is used for adsorption sampling from the soil in a wet state.

[0054] During implementation, place the DGT sampler 1 on the soil surface of the field sampling point, make the adsorption end of the DGT sampler 1 contact the soil, fill...

Embodiment 2

[0075] Another specific embodiment of the present invention discloses a soil sediment DGT sampling device. The difference from Embodiment 1 is that the flow control mechanism 7 is improved in this embodiment. The water outlet of the container 2 is connected, and the water outlet of the flow rate control mechanism 7 is connected to the water inlet of the water supply box 4, so that it can be unattended without electricity.

[0076] Specifically, as Figure 7 As shown, the flow rate control mechanism 7 includes an adjustment box 11, and a lever water control assembly is arranged in the adjustment box 11. The lever water control assembly includes a vertical rod 12, a swing rod 13, a floating ball 14, an L-shaped pipe 15, and a rubber plug 16. The rod 12 is vertically arranged in the adjustment box 11, a rotating shaft is installed at the top of the vertical rod 12, and the swing rod 13 is connected with the vertical rod 12 through the rotating shaft. The end is connected with a ...

Embodiment 3

[0085] Another specific embodiment of the present invention discloses a soil sediment DGT sampling method, using the soil sediment DGT sampling device of Embodiment 1, comprising the following steps:

[0086] Step 1: Put the DGT sampler 1 on the soil surface layer 9 of the field sampling point, and the adsorption end of the DGT sampler 1 is in contact with the soil;

[0087] Step 2: Fix the dripping mechanism on the top of the DGT sampler 1;

[0088] Step 3: Turn on the drip switch of the drip mechanism, and the pure water in the container 2 drips continuously to the soil surface layer 9 of the sampling point through the drip pipe, so that the soil surface layer 9 of the sampling point is kept in a moist state; DGT sampler 1 is carried out in the soil in a moist state. Adsorption sampling.

[0089] A preferred implementation of this embodiment, before step 3, further includes the following steps:

[0090] Dig a pit on one side of the sampling point, insert the water retainin...

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Abstract

The invention relates to a soil sediment DGT sampling device and method, belongs to the technical field of soil sampling, and solves the problem that the existing DGT sampler cannot realize field sampling. The soil sediment DGT sampling device includes a DGT sampler and a dripping mechanism. The dripping mechanism includes a dripping pipeline and a container. The container is connected to the dripping pipeline. The pure water in the container drips continuously to the soil surface of the sampling point through the dripping pipeline, so that the soil surface layer Keep the wet state; DGT sampler is placed on the wet soil surface for adsorption sampling from the wet soil. The invention has the advantages of simple structure and convenient operation. By setting the dripping mechanism to continuously drip water, the soil of the sampling point is kept in a moist state, and field sampling is realized, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of soil sampling, in particular to a soil sediment DGT sampling device and method. Background technique [0002] DGT refers to the gradient diffusion thin film technology (Diffusive Gradients in Thin-films, DGT), which can effectively determine the bioavailable state of heavy metals in nature. Compared with other traditional speciation analysis techniques, it can better reflect the heavy metals absorbed by organisms. , the gradient diffusion thin film technology introduces a dynamic concept, which can study the bioavailability of heavy metals by simulating the absorption process of heavy metals by plants or other organisms. Therefore, the obtained results not only reflect the static process (soil particles and soil solution), but also include the dynamic process, which is the difference of DGT technology. key to other measurement methods. [0003] Traditional DGT is mainly used in water bodies (rivers, lak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/04G01N1/10
CPCG01N1/04G01N1/10
Inventor 赵九江郭威袁继海范晨子
Owner NAT RESERACH CENT OF GEOANALYSIS
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