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Sediment interstitial water in-situ sampling method and apparatus

A technology for interstitial water and sediments, which is applied in the direction of sampling devices, etc., can solve the problems of differences in interstitial water, different results, and data deviations, and achieves the effect of simple structure.

Inactive Publication Date: 2006-12-13
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned traditional interstitial water collection methods are all indirect extraction of interstitial water. Different treatment methods or even the same treatment method adopt different processing parameters, and the results are likely to be different. The final collected water samples are different from the actual interstitial water. Differences, in-situ interstitial water cannot be collected directly, resulting in deviations in processed data

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  • Sediment interstitial water in-situ sampling method and apparatus
  • Sediment interstitial water in-situ sampling method and apparatus
  • Sediment interstitial water in-situ sampling method and apparatus

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Embodiment 1

[0018] The in-situ sampling method of sediment interstitial water of the present invention adopts the following method steps:

[0019] (1) Adopt a water exchange device 1, this water exchange device 1 comprises a copper pipe 2, has a plurality of through holes 3 on the pipe wall of the copper pipe 2, and a layer of glass fiber filter paper 4 and an outer layer of the pipe wall are wrapped outside the pipe wall. A layer of stainless steel mesh 5, which can well isolate particles and soil from entering, and water can freely enter and exit; the copper tube 2 plays a supporting role and ensures a certain space and prevents the growth of microorganisms; the stainless steel mesh 5 mainly protects the glass fiber filter Paper 4; one end of the copper tube 2 is closed, and the other end has a top cover 6, and the solid-phase microextraction device 7 in the copper tube 2 is fixed on the top cover 6 by matching the screw cap 16 with the threaded hole provided on the top cover.

[0020] ...

Embodiment 2

[0023] The in-situ sampling method of sediment interstitial water of the present invention adopts the following method steps:

[0024] (1) Adopt a water exchange device 1, this water exchange device 1 comprises a copper pipe 2, has a plurality of through holes 3 on the pipe wall of the copper pipe 2, and a layer of glass fiber filter paper 4 and an outer layer of the pipe wall are wrapped outside the pipe wall. A layer of stainless steel mesh 5, which can well isolate particles and soil from entering, and water flows in and out freely; the copper pipe 2 plays a supporting role and ensures a certain space and prevents the growth of microorganisms; the stainless steel mesh 5 mainly protects the glass fiber filter Paper 4; one end of the copper pipe 2 is closed, and the other end has a top cover 6, the top cover 6 is sealed with a water pipe 8, and the water pipe 8 can communicate with the copper pipe 2 and can extend out of the ground surface.

[0025] (2) The above-mentioned wa...

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Abstract

The invention relates to a method and a device for sampling deposits interstitial water. The method comprises steps of: (1) installing a solid-phase micro-extraction device in the cavity of a water exchanging device, or connecting one end of the water exchanging device with a water pipe which is connecting with the cavity and sealed matching with the water exchanging device; (2) embedding the water exchanging device into deposits per requirement, making the water pipe extend out the ground, employing a water pump to pump the interstitial water via the water pipe or getting out the water exchanging device to get the interstitial water via the micro-extraction.

Description

[Affiliated technical field] [0001] The invention belongs to a sampling method and device for interstitial water in sediments. [Background technique] [0002] Sediment interstitial water affects various important parameters of the bio-Earth cycle. Sedimentary materials release various nutrients into interstitial water. The composition of interstitial water changes with increasing depth. This change reflects the rate and stoichiometry of mineralization reactions. . Studying the dynamics of substances in surface sediments helps to understand their behavior in the entire water environment system, such as sediment-water interface exchange, chemical forms of substances in surface sediments and their diagenetic models, understanding bottom mineralization and nutrition The burial process of substances requires accurate determination of the chemical composition and content of interstitial water. [0003] At present, there are mainly centrifugation method, squeezing method, osmosis...

Claims

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Application Information

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IPC IPC(8): G01N1/10
Inventor 曾永平
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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