CN106969941B - Micro- plastics acquisition device and its acquisition method in a kind of superficial water - Google Patents
Micro- plastics acquisition device and its acquisition method in a kind of superficial water Download PDFInfo
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- CN106969941B CN106969941B CN201710242699.6A CN201710242699A CN106969941B CN 106969941 B CN106969941 B CN 106969941B CN 201710242699 A CN201710242699 A CN 201710242699A CN 106969941 B CN106969941 B CN 106969941B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Hydrology & Water Resources (AREA)
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses plastics acquisition device micro- in a kind of superficial water and its acquisition methods, feature be include the identical upper wooden frame of frame face shape size and lower wooden frame, upper wooden frame is fixedly connected with lower wooden frame and is provided with steel wire between upper wooden frame and lower wooden frame, upper wooden frame is surrounded by four cross bars, the center of at least a pair of symmetrical cross bar is provided with the counterweight tank for placing mass, the gravity of micro- plastics acquisition device entirety and the gravity of mass and the buoyancy just generated in a liquid equal to lower wooden frame, the aperture of steel wire are 1-2mm2Quadrangle, advantage is quickly and effectively to acquire the Surface water sample of water body.
Description
Technical field
The present invention relates to a kind of micro- plastics acquisition device, more particularly, to plastics acquisition device micro- in a kind of superficial water and its
Acquisition method.
Background technique
Micro- plastics are a kind of plastic grain of the diameter less than 5 millimeters, are a kind of main carriers for transmitting pollutant.Micro- modeling
Expect small in size, this means that (specific surface area refers to surface possessed by porosu solid substance unit mass to higher specific surface area
Product), specific surface area is bigger, and the ability of the pollutant of absorption is stronger.Firstly, having existed a large amount of Polychlorinated biphenyls, double in environment
(these organic pollutants are often hydrophobic to the persistence organic pollutants such as phenol A, that is they are less susceptible to be dissolved in water
In, it is more likely to be adsorbed on hydrophobic surface), once micro- plastics and these pollutants meet, it is organic just to assemble formation one
Pollute sphere.Micro- plastics are concentrated mainly on most surface water, and deeper concentration is smaller under normal conditions, and water sample generally used now is adopted
Storage can not all collect the Surface water sample (micro- plastics enrichment region) of water body well using place and depth as parameter.Therefore it needs
Want a kind of novel water sampler that can more accurately be measured water surface.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of tables of Surface water sample that can quickly and effectively acquire water body
Micro- plastics acquisition device and its acquisition method in layer water.
The technical scheme of the invention to solve the technical problem is: micro- plastics acquisition device in a kind of superficial water,
Including the identical upper wooden frame of frame face shape size and lower wooden frame, the upper wooden frame and the fixed company of the lower wooden frame
It connects and is provided with steel wire between the upper wooden frame and the lower wooden frame, the upper wooden frame is enclosed by four cross bars
At the center of at least a pair of symmetrical cross bar is provided with the counterweight tank for placing mass, and micro- plastics are adopted
The sum of the gravity of acquisition means entirety and the gravity of mass are just equal to what the lower wooden frame generated in a liquid
Buoyancy, the aperture of the steel wire are 1-2mm2Quadrangle.
The upper wooden frame is fixedly connected with the lower wooden frame using steel nail.
Four lifting ropes are provided with above the upper wooden frame, the lower end of lifting rope described in four is fixed on the overwood
On four angles of frame and the upper end, which is converged, to be fixedly connected.
Lifting rope described in four converges the length phase of junction from four angles of the upper wooden frame to the lifting rope
Together.
The steel wire is made of stainless steel；It is made of nylon material that the lifting rope, which uses,.
According to formula MMatch=r1*VUnder* g-MAlways, calculate and obtain mass weight, mass is taken to be placed in counterweight tank, then will
Micro- plastics acquisition device is put into seawater the sum of the gravity for making micro- plastics acquisition device entirety and gravity of mass and is just equal to
The buoyancy that lower wooden frame generates, steel wire, which is attached to water surface up-sampling, makes micro- plastics of superficial water by capillary phenomenon effect and table
Layer water is risen to together in steel wire mesh, lifts micro- plastics acquisition device rapidly, then utilizes purging by surface layer collected
Water is blown into basin, is packed into sampling bottle, and record completes primary sampling, and wherein r1 is density of sea water, VUnderFor lower wooden frame volume, MAlways
For the overall weight of micro- plastics acquisition device, g is that gravity constant is 9.8N/kg.
Compared with the prior art, the advantages of the present invention are as follows: present invention firstly discloses micro- plastics in a kind of superficial water to adopt
Acquisition means and its acquisition method, counterweight tank are adjusted weight quality, acquisition device are made to make lower layer in the different liquid of density
The buoyancy that wooden frame generates is equal to the gravity of acquisition device and mass entirety, is attached to steel wire on liquid level, ensure that simultaneously
Then the stabilization that metal mesh is contacted with liquid level can be leaked water using the surface tension of water in the moment absorption that metal mesh contacts liquid level
Surface water sample, the micro- plastics for largely swimming in water surface are also drawn into mesh, after the water on acquisition device is collected, just
The water sample for having a large amount of micro- plastics can be obtained, can preferably estimate micro- plastics concentration on the water body surface layer.
Detailed description of the invention
Fig. 1 is micro- plastics acquisition device structural schematic diagram in superficial water of the present invention；
Fig. 2 is micro- plastics acquisition device use state diagram one in superficial water of the present invention；
Fig. 3 is micro- plastics acquisition device use state diagram two in superficial water of the present invention；
Fig. 4 is micro- plastics acquisition device use state diagram three in superficial water of the present invention；
Fig. 5 is micro- plastics acquisition device use state diagram four in superficial water of the present invention；
Fig. 6 is micro- plastics acquisition device use state diagram five in superficial water of the present invention；
Fig. 7 is this collector and common hydrophore sample effect schematic diagram.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Specific embodiment one
Micro- plastics acquisition device in a kind of superficial water, as shown in Figure 1, including the identical upper wooden frame 1 of frame face shape size
With lower wooden frame 2, upper wooden frame 1 is fixedly connected with lower wooden frame 2 and is provided with steel wire between upper wooden frame 1 and lower wooden frame 2
Net 3, upper wooden frame 1 are surrounded by four cross bars 4, and the center of at least a pair of symmetrical cross bar 4 is provided with for placing mass
Counterweight tank 5, the sum of gravity and the gravity of mass of micro- plastics acquisition device entirety are just equal to lower wooden frame 2 and produce in a liquid
Raw buoyancy, the aperture of steel wire 3 are 1-2mm2Quadrangle.Mesh is excessive herein is difficult to collect in surface water, and mesh is too small
Then it is difficult to purge and trap, 1-2mm2Quadrangle (including square, rectangular row and parallelogram etc.) be proper
Size.
In this particular embodiment, upper wooden frame 1 is fixedly connected with lower wooden frame 2 using steel nail 6.Upper 1 top of wooden frame
Four lifting ropes 7 are provided with, the lower end of four lifting ropes 7 is fixed on four angles of wooden frame 2 and the upper end is converged and is fixedly connected.
The length that four lifting ropes 7 converge junction to lifting rope from four angles of upper wooden frame 1 is identical.Above-mentioned steel wire 3 uses stainless steel
Material is made；It is made of nylon material that lifting rope 7, which uses,.
Specific embodiment two
It is specific to walk using the method for the micro- plastics of acquisition of micro- plastics acquisition device in superficial water in above-mentioned specific embodiment one
Suddenly as shown in Fig. 2-Fig. 6, according to formula MMatch=r1*VUnder* g-MAlways, calculate and obtain mass weight, mass is placed in counterweight tank 5
In, then micro- plastics acquisition device, which is put into seawater, makes the sum of gravity and gravity of mass of micro- plastics acquisition device entirety
Just it is equal to the buoyancy that lower wooden frame 2 generates, steel wire 3, which is attached to water surface up-sampling, makes micro- plastics in superficial water by capillary
Phenomenon effect is risen to together with superficial water in 3 mesh of steel wire, lifts micro- plastics acquisition device rapidly, then will using purging
Superficial water collected is blown into basin, is packed into sampling bottle, and record completes primary sampling, and wherein r1 is density of sea water, VUnderFor lower wood
Frame volume, MAlwaysFor the overall weight of micro- plastics acquisition device, g is that gravity constant is 9.8N/kg.
Fig. 7 is this collector and common hydrophore sample effect schematic diagram.Largely it is present in since micro- plastics are very small
Water surface, only a small amount of publication is in water body different depth.And common hydrophore water inlet acquires different water below device
Deep water sample is very convenient, but largely existing superficial water can not be acquired effectively for micro- plastics, and this acquisition device can be effective
Acquire superficial water.
Above description is not limitation of the present invention, and the present invention is also not limited to the example above.The art it is common
Within the essential scope of the present invention, the variations, modifications, additions or substitutions made also should belong to protection of the invention to technical staff
Range.
Claims (5)
1. micro- plastics acquisition method in a kind of superficial water, micro- plastics acquisition device of use includes on frame face shape size is identical
Wooden frame and lower wooden frame, the upper wooden frame be fixedly connected with the lower wooden frame and the upper wooden frame with it is described
Lower wooden frame between be provided with steel wire, the upper wooden frame is surrounded by four cross bars, at least a pair of symmetrical described
The center of cross bar is provided with the counterweight tank for placing mass, the gravity of micro- plastics acquisition device entirety and described
The sum of gravity of mass is just equal to the buoyancy that the lower wooden frame generates in a liquid, and the aperture of the steel wire is
1-2mm2Quadrangle, it is characterised in that specific step is as follows: according to formula MMatch=r1*VUnder*g-MAlways, calculate and obtain mass weight
Amount, takes mass to be placed in counterweight tank, and then micro- plastics acquisition device, which is put into seawater, makes micro- plastics acquisition device entirety
The sum of gravity of gravity and mass is just equal to the buoyancy that lower wooden frame generates, and steel wire, which is attached to water surface up-sampling, makes surface layer
Micro- plastics of water are acted on by capillary phenomenon and being risen in steel wire mesh together with superficial water, lift micro- plastics acquisition dress rapidly
It sets, then superficial water collected is blown into basin using purging, be packed into sampling bottle, record completes primary sampling, and wherein r1 is
Density of sea water, VUnderFor lower wooden frame volume, MAlwaysFor the overall weight of micro- plastics acquisition device, g is that gravity constant is 9.8N/kg.
2. micro- plastics acquisition method in a kind of superficial water according to claim 1, it is characterised in that: the upper wooden frame
It is fixedly connected with the lower wooden frame using steel nail.
3. micro- plastics acquisition method in a kind of superficial water according to claim 2, it is characterised in that: the upper wooden frame
Top is provided with four lifting ropes, and the lower end of lifting rope described in four is fixed on four angles of the upper wooden frame and the upper end
Converge and is fixedly connected.
4. micro- plastics acquisition method in a kind of superficial water according to claim 3, it is characterised in that: lifting rope described in four
The length for converging junction to the lifting rope from four angles of the upper wooden frame is identical.
5. micro- plastics acquisition method in a kind of superficial water according to claim 4, it is characterised in that: the steel wire is adopted
It is made of stainless steel material；It is made of nylon material that the lifting rope, which uses,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710242699.6A CN106969941B (en) | 2017-04-14 | 2017-04-14 | Micro- plastics acquisition device and its acquisition method in a kind of superficial water |
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| CN201710242699.6A CN106969941B (en) | 2017-04-14 | 2017-04-14 | Micro- plastics acquisition device and its acquisition method in a kind of superficial water |
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| CN106969941A CN106969941A (en) | 2017-07-21 |
| CN106969941B true CN106969941B (en) | 2019-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107957490B (en) * | 2017-11-17 | 2020-04-03 | 中国水产科学研究院黄海水产研究所 | Experimental device for seawater micro-plastic ecological niche in-situ research and using method |
| CN107617262A (en) * | 2017-11-20 | 2018-01-23 | 山东省海洋资源与环境研究院 | The device of micro- plastic grain in a kind of removable sea-farming workshop water body |
| CN107670391B (en) * | 2017-11-20 | 2023-04-07 | 山东省海洋资源与环境研究院 | Device capable of removing micro plastic particles in water body of ditch water inlet type mariculture pond |
| CN107843460B (en) * | 2017-12-07 | 2023-07-21 | 山东省科学院海洋仪器仪表研究所 | Micro-plastic sampling system and method in seawater |
| CN108426738B (en) * | 2018-04-11 | 2024-06-21 | 中国环境科学研究院 | Bidirectional reciprocating marine microplastic synchronous acquisition and separation device with middle filter screen |
| CN109187096B (en) * | 2018-09-27 | 2020-09-18 | 常州大学 | Hierarchical sampling device of little plastic contaminant in sewage |
| CN109253907B (en) * | 2018-10-17 | 2020-11-13 | 大连理工大学 | Method for rapidly and auxiliarily detecting micro-plastic in water environment sample by using Nile red dyeing |
| CN109724848B (en) * | 2018-11-21 | 2021-09-21 | 华东理工大学 | Rapid collection device and collection method for micro-plastics in shallow water in river and lake system |
| CN110108514A (en) * | 2019-04-22 | 2019-08-09 | 中国水产科学研究院东海水产研究所 | The micro- plastics acquisition device of the water surface |
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