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In-situ passive sampler for wetland

A passive sampler, in-situ technology, applied in sampling devices and other directions, can solve the problem of lack of information on the horizontal and vertical spatial distribution of target monitoring objects, and achieve flexible sampling periods, simple and easy preparation methods, and extensive in-situ monitoring. Effect

Inactive Publication Date: 2016-08-17
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing in-situ passive balanced sampling techniques often only perform in-situ sampling for a certain point, and lack information about the horizontal and vertical spatial distribution of target monitoring objects in the sampling area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Preparation of Cube Series Passive Sampler

[0011] Use a plexiglass plate with a thickness of 0.5 cm to make the sampling bottom plate, the size of the bottom plate is 19.4cm×8.9cm×0.5cm, and drill screw holes on the edge of the bottom plate; make another sampling bottom plate, cut out 0.5cm×0.5cm in the middle area of ​​the bottom plate A cube of ×0.5cm is used as a sampling unit, and each sampling unit is filled with an equal amount of agarose gel, and the sampling network chamber is formed after the concatenation; take another sampling bottom plate, and open a window in the middle of the bottom plate, and the window size is 18.0cm× 5.6cm×0.5cm, as the sampling window panel; cut a 0.3mm thick silica gel pad into 19.0cm×6.5cm as a sealing gasket; take a fiber filter membrane with a pore size of 0.45 μm, and cut it into a 19.0cm×6.5cm filter membrane piece; The above-mentioned sampling base plate, sealing gasket, sampling mesh chamber, filter membrane and sa...

Embodiment 2

[0012] Embodiment 2: the preparation of rectangular parallelepiped passive sampler

[0013] Use a plexiglass plate with a thickness of 0.5 cm to make the sampling bottom plate, the size of the bottom plate is 19.4cm×8.9cm×0.5cm, and drill screw holes on the edge of the bottom plate; make another sampling bottom plate, cut out 5.5cm×0.2 cm in the middle area of ​​the bottom plate A rectangular parallelepiped of ×0.5cm is used as a sampling unit, and each sampling unit is filled with an equal amount of agarose gel, and the sampling network chamber is formed after the concatenation; take another sampling bottom plate, and open a window in the middle of the bottom plate, and the window size is 18.0cm× 5.6cm×0.5cm, as the sampling window panel; cut a 0.3mm thick silica gel pad into 19.0cm×6.5cm as a sealing gasket; take a filter membrane with a pore size of 0.45 μm, and cut it into a 19.0cm×6.5cm filter membrane piece; The above-mentioned sampling bottom plate, sealing gasket, samp...

Embodiment 3

[0014] Embodiment 3: the preparation of partition isolation type passive sampler

[0015] In the middle area of ​​the bottom plate of the plexiglass plate with a size of 19.4cm×8.9cm×0.5cm, a partition type sampling net room board is made. The net room is divided into 4 areas, and the size of each area is 8.2cm×2.1cm×0.5cm. Each sampling partition chamber is filled with sampling medium, which can be hydrogel or water; below the sampling chamber, prepare a bottom plate with a size of 19.4cm×8.9cm×0.5cm, and drill screw holes on the edge of the bottom plate; Take a plexiglass bottom plate, open a window in the middle of the bottom plate as a sampling window panel, the size of the sampling window window is 18.0cm×5.6cm×0.5cm; cut a 0.3mm thick silica gel pad into 19.0cm×6.5cm as a sealing gasket; take A filter membrane with a pore size of 1 μm, or a fiber filter membrane with other pore sizes, is cut into a filter membrane of 19.0cm×6.5cm; the above-mentioned sampling bottom plat...

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PUM

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Abstract

The invention relates to an in-situ passive sampler for wetland. The sampler comprises a sampling network chamber which is composed of small sampling units, and each sampling unit is filled with sampling medium; the bottom part of the sampling network chamber is connected to a piece of base plate, a layer of sealing gasket is clamped between the sampling network chamber and the base plate, in order to isolate the sampling medium and an external solution; a layer of porous filter membrane is paved on the sampling network chamber, and a sampling window panel is placed and pressed on the porous filter membrane; screws are installed in reserved threaded holes on the base plate, the sampling network chamber and the edge of the sampling window panel, and the base plate, the sealing gasket, the sampling network chamber, the porous filter membrane and the sampling window panel are combined into a set of sampling apparatus. The sampling apparatus can be used for realizing in-situ monitoring of multidimensional spatial distribution of targeted monitoring objects in wetland deposits and soil.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a wetland in-situ passive sampler. Background technique [0002] The real-time monitoring of pollutant forms and concentrations in wetland sediments provides an important scientific basis for constructing efficient environmental pollution prevention and control strategies. The accuracy of environmental monitoring depends to a large extent on whether the quality of samples in the sampling process is sufficiently guaranteed. However, wetland sampling and monitoring quality control have long been one of the technical bottlenecks that have not been fully resolved in the research field of environmental pollution prevention and control at home and abroad. [0003] The traditional sampling method is usually to destructively collect sediment or matrix samples on site, transport them back to the laboratory for further centrifugation, filtration, etc., and then analyze th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/18
Inventor 胡朝华唐晓达张又弛罗文邃
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI