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Simultaneous sampling device and method for layered pore water and surface water

A technology of simultaneous sampling and pore water, applied in sampling devices and other directions, can solve the problems of short length and inability to achieve stratified sampling, and achieve the effects of relatively low cost, simple structure and low cost.

Active Publication Date: 2016-01-20
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this sampler is that the length of the sampler is relatively short, and the water body in the pipe can flow up and down, resulting in the inability to realize vertical layered sampling and simultaneous sampling of pore water and surface water

Method used

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  • Simultaneous sampling device and method for layered pore water and surface water
  • Simultaneous sampling device and method for layered pore water and surface water
  • Simultaneous sampling device and method for layered pore water and surface water

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Embodiment Construction

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0021] figure 1 A simultaneous sampling device 100 for layered pore water and surface water according to the present invention is shown. The sampling device 100 includes a substantially rectangular tube body 1 . One end of the tube body 1 is provided with an operating handle 8, so as to facilitate insertion and extraction of the sampling device 100 during operation. The other end of pipe body 1 is configured as solid conical end 11 (see figure 2 ), the tapered end 11 can ensure the structural stability of the sampling device 100 when it is inserted into the river bed.

[0022] The tube body 1 is mainly composed of a first sampling part 20 and a second sampling part 21 connected in shape matching with each other....

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Abstract

The invention relates to a synchronous sampling device and method for stratified pore water and surface water. The synchronous sampling device comprises a pipe body and a positioning plate, wherein the pipe body is formed by a first sampling part and a second sampling part which are connected with each other and have matched shapes, collecting chambers which are uniformly distributed at intervals are arranged inside the pipe body, the positioning plate is arranged outside the pipe body and is used for being jointed with the surface of a river bed, a first group of collecting chambers which are positioned above the positioning plate are used for collecting the surface water, a second group of collecting chambers which are positioned below the positioning plate are used for collecting the pore water, and SPME glass optical fibers which pass through all the collecting chambers in the groups are respectively arranged in all the groups of collecting chambers so as to realize the synchronous sampling of the pore water and the surface water. After permeating into the collecting chambers through a protective screen, a water body is sufficiently contacted with the SPME glass optical fibers in the collecting chambers, and the flowing of the water body among the collecting chambers is blocked through the intervals between the adjacent two collecting chambers, so that the vertical stratified sampling can be completed.

Description

technical field [0001] The invention belongs to the technical field of water quality environment, and in particular relates to a layered synchronous sampling device and method for pore water and surface water. Background technique [0002] There are many hydrophobic organic pollutants in river water, which have chemical characteristics such as persistence, high bioaccumulation, and low water solubility. Among them, hydrophobic organic pollutants are mostly adsorbed on sediment particles and suspended particles, and only the part desorbed rapidly from the adsorbate has potential toxicity to the ecosystem. Therefore, accurate determination of the concentration of dissolved hydrophobic organic matter in water plays an important role in the correct assessment of biological hazards. [0003] Solid-phase microextraction (SPME) technology is to place the glass fiber coated with a specific substance coating in the solution or gas to be tested, and use the absorption or adsorption m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/10
Inventor 方红卫何国建陈明洪
Owner TSINGHUA UNIV
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