WO2024063175A1 - Dispositif d'échantillonnage de microplastiques et de répartition par taille - Google Patents

Dispositif d'échantillonnage de microplastiques et de répartition par taille Download PDF

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Publication number
WO2024063175A1
WO2024063175A1 PCT/KR2022/014181 KR2022014181W WO2024063175A1 WO 2024063175 A1 WO2024063175 A1 WO 2024063175A1 KR 2022014181 W KR2022014181 W KR 2022014181W WO 2024063175 A1 WO2024063175 A1 WO 2024063175A1
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WO
WIPO (PCT)
Prior art keywords
microplastic
cassette
size distribution
distribution device
filter
Prior art date
Application number
PCT/KR2022/014181
Other languages
English (en)
Korean (ko)
Inventor
윤여준
주성현
이지훈
계호민
이준호
김지윤
임채휘
Original Assignee
연세대학교 원주산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 연세대학교 원주산학협력단 filed Critical 연세대학교 원주산학협력단
Priority to PCT/KR2022/014181 priority Critical patent/WO2024063175A1/fr
Publication of WO2024063175A1 publication Critical patent/WO2024063175A1/fr

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Classifications

    • 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
    • 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
    • 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
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples

Definitions

  • This application relates to microplastic sampling and size distribution devices.
  • Microplastic samples in existing water samples were collected using methods used to collect marine samples, such as mantatrol and plankton nets.
  • the conventional method of collecting microplastic samples in a sample had the problem of only being able to collect microplastic samples of relatively large sizes of 100 ⁇ m or more.
  • the purpose of this application is to solve the problems of the prior art described above, and to provide a microplastic sampling and size distribution device that is compatible between fluids and capable of collecting microplastic samples by improving the existing multi-stage housing sampling device. Do it as
  • a microplastic sample collection and size distribution device includes a filter provided to enable collection of a microplastic sample present in an object; A cassette for fixing the filter; And it may include a housing provided to enable fixation and close contact with the cassette.
  • the housing includes a base member disposed on the floor and provided to enable the cassette to be placed on the upper side, and an upper member provided to enable the cassette to be fixed and in close contact with the base member, wherein the upper member is provided with the micro It may include an inlet through which an object containing a plastic sample flows in, and the base member may include an outlet through which an object from which at least most of the microplastic sample is collected is discharged.
  • microplastic sample collection and size distribution device may be equipped to arrange a plurality of the cassettes in order to collect the samples by size.
  • microplastic sample collection and size distribution device may further include a height adjustment device for adhesion and fixation according to the number and height of the cassette when the cassette is interposed between the base member and the upper member. there is.
  • At least one of the plurality of cassettes includes a cross member or an internal donut member, and the cassette including the cross member or the internal donut member reduces the flow of the filter more than a cassette without the cross member or the internal donut member. It can be equipped to reduce it.
  • the cassette and the housing may be made of a material other than plastic.
  • the object may include air or liquid in which microplastics exist.
  • the microplastic sample collection and size distribution device includes a filter, thereby enabling the collection of microplastic samples present in the object to the size desired by the user. of microplastic samples can be provided.
  • the cassette includes a cross member in the middle position, thereby preventing the filter from collapsing due to the flow of the object and minimizing the flow of the filter due to the flow of the object. You can.
  • the cassette includes an internal donut member, thereby expanding the effective area and allowing a larger amount of sample to be collected, and lowering the resistance of the filter to the fluid through the internal circle. The phenomenon of crumpling can be minimized.
  • the microplastic sample collection and size distribution device includes a height adjustment device, so that the cassette can be interposed in multiple stages between the upper member and the base member of the housing. By applying various filters with different pore sizes on the cassette, microplastic samples can be collected by size.
  • the cassette and the housing are made of a material other than plastic, thereby minimizing interference in microplastic sample collection and minimizing the impact on microplastic sample analysis.
  • Figure 1 is a schematic conceptual diagram (front view) of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • Figure 2 is a schematic conceptual diagram (plan view) of a cassette of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • Figure 3 is a schematic conceptual diagram of a cassette including an internal donut member of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • Figure 4 is a schematic conceptual diagram (front view) of the housing of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • Figures 5 and 6 are diagrams for explaining an implementation example of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • 'this device' a microplastic sample collection and size distribution device (hereinafter referred to as 'this device') according to an embodiment of the present application will be described.
  • Figure 1 is a schematic conceptual diagram (front view) of a microplastic sample collection and size distribution device according to an embodiment of the present application
  • Figure 2 is a schematic diagram of a cassette of a microplastic sample collection and size distribution device according to an embodiment of the present application
  • Figure 3 is a schematic conceptual diagram (front view) of a cassette of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • the device 1000 includes a housing 100, a cassette 200, and a filter.
  • This device 1000 can be used to collect and analyze samples of microplastics present in an object, but is not limited to this.
  • the filter of this device 1000 may be equipped to enable collection of microplastic samples present in the object.
  • the object may be a fluid containing gas (atmosphere) or liquid (water) in which microplastics exist. However, it is not limited to this, and the object may include soil and sediment.
  • the size of the pores of the filter mesh network may be set to a standard that allows collection of microplastic samples, and the size of the pores of the filter mesh network may be set to a standard that is obvious to a person skilled in the art.
  • the cassette 200 of the device 1000 can hold a filter.
  • the filter may be positioned on the upper surface of the cassette 200 (12 o'clock direction, based on FIG. 1) so that the filter can be fixed to the device 1000, but the filter is not limited to this.
  • a gap may be formed along the inner circumferential direction of the upper surface of the cassette 200 into which the filter may be inserted and fixed.
  • a filter may be located on the top of the cassette 200, and a circular silicone seal may be placed on top of the filter. Due to this, the filter can be naturally fixed due to the structure of the upper side of the cassette 200 and the lower side of the cassette 200 on which the filter is raised.
  • the cassette 200 may have a circular plan view shape, but is not limited thereto.
  • the cassette 200 may be formed as a donut-shaped plate to allow an object to pass through an internal hole.
  • at least one of the plurality of cassettes 200 of the device 1000 may include a cross member 210, and the cross member 210 is the cross member of the cassette 200. It may be provided in a position corresponding to the central part of the inner hall.
  • the cassette 200 including the cross member 210 may be provided to reduce the flow of the filter compared to the cassette 200 without the cross member 210.
  • the device 1000 may include a cassette 200 without a cross member 210.
  • Figure 3 is a schematic conceptual diagram including an internal donut member of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • At least one of the plurality of cassettes 200 may include an internal donut member 220.
  • the filter replacement frequency can be lowered to prevent loss or contamination that may occur during the filter replacement process, and the amount of sample per single filter can be increased.
  • an internal donut member 220 is included. can do.
  • the cassette 200 including the inner donut member 220 has a double circular structure, has a large effective area, and can collect a larger amount of sample, and filters the fluid through the middle circle (inner circle). By lowering the resistance, the phenomenon of filter crumpling can be minimized.
  • cassette 200 including the internal donut member 220 can be advantageous during analysis because it can allow the microplastic samples to be collected as close to the center as possible when separating microplastic samples.
  • the cassette 200 which is provided with a general donut-shaped plate that does not include the cross member 210 and the internal donut member 220, can be used when the sampling speed is slow and constant, such as air samples, and the cross member 220 is not included.
  • the cassette 200 containing (210) can be applied to a filter with a diameter of 47 mm and used for size separation for analysis of environmental samples with little contamination.
  • the cassette 200 including the internal donut member 220 can be applied to, for example, a 90 mm diameter filter and used for size separation for analysis of highly polluted environmental samples, but is limited to this. It is not guaranteed and can be applied in various ways depending on need.
  • the cassette 200 may be made of a material other than plastic.
  • the cassette 200 may be made of a metal material such as aluminum or stainless steel, but is not limited to this.
  • the cassette 200 may be made of various materials known to those skilled in the art, rather than plastic. You can. Accordingly, the problem of existing commercial cassettes being unsuitable for collecting microplastic samples as they are made of acetal (polyoxymethylene; POM), a type of plastic, can be solved.
  • the cassette 200 containing a metal material can minimize its impact on the analysis of microplastic samples through this manufacturing process.
  • Figure 4 is a schematic conceptual diagram (front view) of the housing of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • the housing 100 may be provided to enable fixation and close contact with the cassette 200.
  • Housing 100 may include a base member 120 and an upper member 110.
  • the housing 100 may be made of a material other than plastic.
  • the housing 100 may be made of a metal material such as aluminum or stainless steel, but is not limited thereto.
  • the housing 100 may be made of a material other than plastic, which is obvious to those skilled in the art.
  • the cassette 200 may be manufactured in a structure compatible with the cassette of an existing low-capacity air sampling device, but is not limited thereto.
  • the cassette 200 may be manufactured in a structure that is interchangeable with a cassette of a fluid sampling device, such as water quality.
  • the upper member 110 may be provided to enable the cassette 200 to be fixed and adhered to the base member 120.
  • Cassette 200 may be interposed between the upper member 110 and the base member 120.
  • the cassette 200 may be placed on the upper surface of the base member 120, and the upper member 110 may be placed on the upper side of the cassette 200 disposed on the upper surface of the base member 120. Accordingly, the cassette 200 can be fixed and adhered to the housing 100.
  • the base member 120 may include a silicone seal, and accordingly, the cassette 200 is fixed to the upper side of the base member 120, and the base member ( 120), the cassette 200, and the upper member 110 are tightened, adhered and fixed, and the silicone seal is compressed to maintain watertightness of the overall structure.
  • the base member 120 may include a silicone seal, and accordingly, the cassette 200 is fixed to the upper side of the base member 120, and the base member ( 120), the cassette 200, and the upper member 110 are tightened, adhered and fixed, and the silicone seal is compressed to maintain watertightness of the overall structure.
  • the base member 120 may include a silicone seal
  • the upper member 110 may include an inlet 111 through which an object containing a microplastic sample flows.
  • the inlet 111 may be provided on the upper side of the upper member 110, and may extend and penetrate to the lower surface of the upper member 110 to introduce an object containing a microplastic sample.
  • the upper member 110 may allow the object introduced through the inlet 111 to flow to the filter and cassette 200 located below the upper member 111.
  • the base member 120 may be disposed on the floor and the cassette 200 may be disposed on the upper side.
  • the floor may be the ground in the dictionary sense, but is not limited to this, and as another example, rather than the dictionary meaning, it may be the top surface of a table (desk). In other words, it is preferable to interpret the floor as a space in which the base member 120 of the housing 100 can be placed widely encompassing the space.
  • the base member 120 may include a support portion that is supported while being spaced apart from the floor, and the support portion may be provided on the lower side of the base member 120.
  • the base member 120 may include an outlet 121 through which the object from which at least most of the microplastic samples are collected is discharged.
  • the outlet 121 may be an outlet.
  • the discharge port 121 may be provided on the lower side of the base member 120, and may extend and penetrate to the upper surface of the base member 120 to discharge the object from which at least most of the microplastic sample has been collected.
  • Figures 5 and 6 are diagrams for explaining an implementation example of a microplastic sample collection and size distribution device according to an embodiment of the present application.
  • the apparatus 1000 may be equipped with a plurality of cassettes 200 to collect microplastic samples by size.
  • the device 1000 may be equipped with a filter according to a desired standard in order to collect microplastic samples by size.
  • the device 1000 can be selectively equipped with filters with different filter pore sizes to collect microplastic samples by size.
  • the uppermost cassette 200 is used to measure the size of the pores of the mesh network. It is equipped with the largest filter, and the cassette 200 disposed at the bottom can be equipped with a filter with the smallest mesh pore size. Accordingly, the apparatus 1000 can arrange the pores of the filter mesh network in a plurality of cassettes 200 with different sizes, allowing microplastic samples to be collected by size in the order of filtration.
  • the filter may be provided so that the pores of the mesh network have sizes of 100 ⁇ m, 20 ⁇ m, 5 ⁇ m, and 1 ⁇ m, and the arrangement order accordingly may be arranged in the order of 100 ⁇ m, 20 ⁇ m, 5 ⁇ m, and 1 ⁇ m from the top.
  • the arrangement order accordingly may be arranged in the order of 100 ⁇ m, 20 ⁇ m, 5 ⁇ m, and 1 ⁇ m from the top.
  • it is not limited to this.
  • the device 1000 includes at least one cassette 200 including a cross member 210 when the plurality of cassettes 200 are interposed between the base member 120 and the upper member 110.
  • at least one cassette 200 including an internal donut member 220 may be provided. Accordingly, when the object flows through the inlet 111 of the device 1000 and a flow is generated, the cassette 200 including the cross member 210 and the cassette 200 including the inner donut member 220 ) can minimize the flow due to the flow of the object and prevent the filter from collapsing.
  • the device 1000 can be selectively equipped with filters with diameters of 25 mm, 47 mm, or 90 mm depending on the state of the raw material, and depending on the selective installation of the diameter of these filters, the state of the sample. Depending on this, it can be made selectively available. For example, if the contamination of the environmental sample is not severe, a filter with a diameter of 47 mm may be used, and as another example, if the contamination of the environmental sample is severe, a filter with a diameter of 90 mm may be used.
  • the device 1000 adheres to the cassette 200 according to the number and height of the cassette 200.
  • the height adjustment device 300 may include a screw and a wing nut, but is not limited thereto, and may be provided with various height-adjustable members that will be apparent to those skilled in the art.
  • the height adjustment device 300 adjusts the height according to the number and height of the cassettes 200 interposed in multiple stages to adjust the upper member. (110) can fix and adhere the plurality of cassettes (200) to the base member (120).
  • the cassette 200 when the cassette 200 is interposed between the base member 120 and the upper member 110, the cassette 200 is placed on the upper side of the base member 120 without a binding structure, and the height
  • the upper member 110 can fix and adhere the cassette 200 to the base member 120, allowing simple attachment and detachment without the attachment structure of the housing of the existing sample collection device. You can.
  • acetone can be used to remove microplastics, and ethanol can be used to rinse them.
  • acetone may not be able to remove some microplastics.
  • the cassette 200 can be prepared by setting the number and diameter according to the sample of the object (for example, a microplastic sample).
  • the diameter can be set differently depending on the degree of contamination of the sample containing microplastics. For example, if the degree of contamination of the sample is high, the diameter can be set to be wide. Additionally, the number of stages can be set depending on the degree of separation of the sample.
  • this device 1000 can be fixed using a height adjustment device 300 after coupling the cassette 200 to the housing 100.
  • the device 1000 can be connected to a reduced pressure filtration set by connecting a silicone hose to the outlet (lower outlet) of the base member 120, and the inlet (upper inlet) of the upper member 110 of the device 1000. ) can be used by connecting a silicone hose for sample suction.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Est divulgué un dispositif d'échantillonnage de microplastiques et de répartition par taille. Dans un mode de réalisation de la présente demande, ce dispositif peut comprendre : un filtre disposé pour permettre l'échantillonnage de microplastiques présents dans un objet ; une cassette fixant le filtre ; et un boîtier permettant le verrouillage de la cassette et un contact étroit avec celle-ci.
PCT/KR2022/014181 2022-09-22 2022-09-22 Dispositif d'échantillonnage de microplastiques et de répartition par taille WO2024063175A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2022/014181 WO2024063175A1 (fr) 2022-09-22 2022-09-22 Dispositif d'échantillonnage de microplastiques et de répartition par taille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2022/014181 WO2024063175A1 (fr) 2022-09-22 2022-09-22 Dispositif d'échantillonnage de microplastiques et de répartition par taille

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WO2024063175A1 true WO2024063175A1 (fr) 2024-03-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3322595B2 (ja) * 1996-03-28 2002-09-09 テルモ株式会社 フィルター装置および生体微細組織の分離・回収方法
KR102031180B1 (ko) * 2017-10-30 2019-10-11 한국해양과학기술원 코드엔드가 부착된 수중입자 크기별 채집장치
CN210243305U (zh) * 2019-08-01 2020-04-03 江苏迈尚环保科技有限公司 一种多通道空气颗粒物采样器及其分流装置
TWM594011U (zh) * 2020-01-03 2020-04-21 國立高雄科技大學 水體中塑膠微粒收集過濾裝置
KR102422951B1 (ko) * 2022-03-08 2022-07-20 주식회사 지이테크 미세플라스틱 시료채취장치를 이용한 시료채취방법
KR20230027869A (ko) * 2021-08-20 2023-02-28 연세대학교 원주산학협력단 미세플라스틱 시료 채취 및 크기 분배 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3322595B2 (ja) * 1996-03-28 2002-09-09 テルモ株式会社 フィルター装置および生体微細組織の分離・回収方法
KR102031180B1 (ko) * 2017-10-30 2019-10-11 한국해양과학기술원 코드엔드가 부착된 수중입자 크기별 채집장치
CN210243305U (zh) * 2019-08-01 2020-04-03 江苏迈尚环保科技有限公司 一种多通道空气颗粒物采样器及其分流装置
TWM594011U (zh) * 2020-01-03 2020-04-21 國立高雄科技大學 水體中塑膠微粒收集過濾裝置
KR20230027869A (ko) * 2021-08-20 2023-02-28 연세대학교 원주산학협력단 미세플라스틱 시료 채취 및 크기 분배 장치
KR102422951B1 (ko) * 2022-03-08 2022-07-20 주식회사 지이테크 미세플라스틱 시료채취장치를 이용한 시료채취방법

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