KR102530818B1 - Microplastics pretreatment integrated module device, microplastics extracting method and microplastics density separating method using the same - Google Patents

Abstract

A microplastic pretreatment integrated module device according to an embodiment of the present application includes a storage unit provided to form a hollow portion having an upper opening; A filter member provided to enable collection of a microplastic sample present in the subject; A filter plate including a plate member, including a filter mounting portion provided to enable the filter member to be mounted on one side of the plate member; and a sample separation unit including a connection unit provided to be connected to an upper end opening of the sample storage unit and a plate fixing unit provided to allow insertion of the filtering plate.

Description

Microplastic pretreatment integrated module device, microplastic extraction method and microplastic density separation method using the same

The present application relates to a microplastic pretreatment integrated module device, a microplastic extraction method using the same, and a microplastic density separation method.

An appropriate pretreatment method was required to separate the microplastics in the sample and increase the sensitivity of the microplastic analysis. In general, the pretreatment method includes an organic matter removal process and a density separation process.

Conventional density separation devices were used in the overflow method and the ball valve method. In the case of the overflow method, it was necessary to select the separation standard height according to the density separation time, and there was a problem that the submerged material rose again when additional reagents were injected for overflow.

In addition, in the case of the ball valve method, there is a possibility of sample loss due to the space between the upper and lower ends due to the rotation of the part where the ball enters, and the possibility of wear due to the rotation of the ball.

This conventional technique separates microplastics in a sample for precise analysis of microplastics existing in the environment, and when applying an appropriate pretreatment method necessary to increase the sensitivity of microplastic analysis, loss of the sample through minimization and modularization of the pretreatment process. A device to prevent over-contamination was required.

The background technology of the present application is disclosed in Korean Patent Registration No. 10-2178099.

The present invention is to solve the problems of the prior art described above, and to separate the microplastics in the sample, to increase the sensitivity of the microplastic analysis, and to precisely analyze the microplastics to prevent loss and contamination of the sample during the pretreatment process. It is an object of the present invention to provide a microplastics pretreatment integrated module device for microplastics, a microplastics extraction method and a microplastics density separation method using the same.

However, the technical problems to be achieved by the embodiments of the present application are not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above technical problem, a microplastic pretreatment integrated module device according to an embodiment of the present application includes a storage unit provided to form a hollow portion having an upper opening; A filter member provided to enable collection of a microplastic sample present in the subject; Doedoe provided as a plate member, a filter plate including a filter mounting portion provided to enable the mounting of the filter member on one side of the plate member; and a sample separation unit including a connection unit provided to be connected to an upper end opening of the sample storage unit and a plate fixing unit provided to allow insertion of the filtering plate.

In addition, when one side of the filtering plate is inserted into the plate fixing part and mounted, the storage part is provided to communicate with the outside, and the other side of the filtering plate where the plate member is located is attached to the plate fixing part. When inserted and mounted, the storage unit may be provided to be separated from the outside.

In addition, the filter mounting portion is provided to correspond to the shape of the filter member, and may be opened to allow the object to pass through.

In addition, the storage unit, a first storage unit for primarily storing the reagent; and a second storage unit for filtering reagents injected into the first storage unit from the filter member and storing the filtered reagents.

In addition, the storage unit may be provided with an inlet to allow reagent injection into the hollow part at a lower portion of the circumferential members of the storage unit.

In addition, the storage unit may further include a stopper having a shape corresponding to the shape of the injection port.

In addition, the connection unit of the sample separation unit may include a first connection unit connected to an upper opening of the first storage unit; And it may include a second connection portion connected to the top opening of the second storage unit.

In addition, connection of the top opening and the connecting portion may include screw coupling.

In addition, the microplastic extraction method using the integrated microplastic pretreatment module device according to an embodiment of the present application includes: (a) injecting reagents and samples into the storage unit; (b) inserting one side of the filter plate into the plate fixing part; and (c) inverting the storage unit so that the top opening faces downward to filter the reagent to partially remove foreign substances from the sample.

In addition, in the microplastics density separation method using the integrated microplastics preprocessing module device according to an embodiment of the present application, (a) after connecting the second storage unit to the sample separation unit connected to the first storage unit, the plate inserting the other side of the filter plate into a fixing part; (b) injecting the density separation solution into the second storage unit; (c) inserting one side of the filter plate from which the filter member is removed into the plate fixing part; (d) after density separation is completed, inserting the other side of the filter plate into the plate fixing part and removing the second storage part; and (e) collecting the microplastic sample by filtering the reagent stored in the first storage unit after mounting the filter member on the plate fixing unit.

In addition, in the step (a), the first storage unit is connected to the upper side of the sample separation unit with an upper opening facing downward, and the second storage unit has an upper opening at the lower side of the sample separation unit facing upward. can be placed and connected.

The above-described problem solving means are merely exemplary and should not be construed as intended to limit the present disclosure. In addition to the exemplary embodiments described above, additional embodiments may exist in the drawings and detailed description of the invention.

According to the above-described problem solving means of the present application, the integrated microplastic pretreatment module device according to an embodiment of the present application includes a filter plate inserted and mounted in the plate fixing part of the sample separator, and the filter plate includes the plate member and the filter mounting part. By being provided, if necessary, the plate member or the filter mount can be inserted into the plate fixing part so that the sample stored in the storage part can be discharged or stored.

In addition, according to the above-described problem solving means of the present application, one side of the filter plate according to an embodiment of the present invention is provided with a filter mounting portion provided so that the storage portion communicates with the outside, and the other side is provided with a plate member provided so that the storage portion is separated from the outside. By being provided, it is possible to separate or open the storage unit according to the insertion direction of one filtering plate.

In addition, according to the above-described problem solving means of the present application, by including the first storage unit and the second storage unit, the storage unit according to an embodiment of the present application accurately identifies at which floor height the density separation is performed during the density separation (ie, depth, height, etc.) can be accurately specified), and more microplastics can be recovered by separating the top and bottom, and floating of sediment that can occur during density separation can be blocked.

In addition, according to the above-described means for solving the problems of the present application, the microplastics pretreatment integrated module device according to an embodiment of the present application includes a first storage unit and a second storage unit, so that the first storage unit is used when microplastics are extracted (organic matter removal process). Unnecessary loss due to container change can be prevented by using a storage unit and then connecting the second storage unit to the first storage unit used during microplastic density separation to perform pretreatment in a single vessel, which was previously carried out in individual processes.

1 is a conceptual diagram illustrating a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
2 is a conceptual diagram illustrating a storage unit of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
3 is a conceptual diagram illustrating a sample separation unit of the integrated microplastic pretreatment module device according to an embodiment of the present disclosure.
4 is a conceptual diagram illustrating a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
5 is a conceptual diagram schematically illustrating a state viewed from above to describe a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
6 is a conceptual diagram schematically illustrating a filter member and a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
7 is a flowchart illustrating a method for extracting microplastics using an integrated microplastics pretreatment module device according to an embodiment of the present disclosure.
8 is a conceptual diagram illustrating a method for extracting microplastics using an integrated microplastics pretreatment module device according to an embodiment of the present disclosure.
9 is a flow chart illustrating a microplastic density separation method using a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.
10A and 10B are conceptual views illustrating a microplastic density separation method using a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.

Hereinafter, embodiments of the present application will be described in detail so that those skilled in the art can easily practice with reference to the accompanying drawings. However, the present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. And in order to clearly describe the present application in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout this specification, when a part is said to be "connected" to another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element in between. do.

Throughout the present specification, when a member is referred to as being “on,” “above,” “on top of,” “below,” “below,” or “below” another member, this means that a member is located in relation to another member. This includes not only the case of contact but also the case of another member between the two members.

Throughout the present specification, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Hereinafter, a microplastic pretreatment integrated module device (hereinafter referred to as 'this device') according to an embodiment of the present disclosure will be described.

1 is a conceptual diagram illustrating an integrated microplastics preprocessing module device according to an embodiment of the present disclosure, and FIG. 2 is a conceptual diagram illustrating a storage unit of the microplastics preprocessing integrated module device according to an exemplary embodiment of the present disclosure.

Referring to FIG. 1 , the device 100 includes a storage unit 110, a filter plate 130, and a sample separation unit 140. For example, the present device 100 may be a device applied to a pretreatment process in order to increase the precision of analysis of the microplastic sample 200.

Also, for example, the device 100 may be used to collect and analyze a sample of microplastic present in a subject, but is not limited thereto. For example, the object may be a fluid including gas (air) or liquid (water quality) in which microplastics are present. However, it is not limited thereto, and the subject may include soil and sediment.

Referring to FIGS. 1 and 2 , the storage unit 110 may have a hollow portion 111 having an upper opening 112 formed therein. For example, the storage unit 110 may be formed in a cylindrical shape. Also, for example, the storage unit 110 may have an open upper end and a closed lower end.

For example, the storage unit 110 may be formed so that the circumferential member of the storage unit 110 extends along the circumference of the lower member so that the hollow part 111 is formed, and the upper end is open.

Also, for example, the storage unit 110 may be provided to store reagents.

Referring to FIGS. 1 and 2 , the storage unit 110 may include an inlet 113 . The inlet 113 may be provided at the lower part of the circumferential member of the storage part 110 to allow reagent injection into the hollow part 111 . For example, the inlet 113 may be provided at a position spaced apart from the lower surface of the storage unit 110 .

In addition, the device 100 may include a stopper 150 having a shape corresponding to the shape of the injection hole 113 . For example, the shape corresponding to the shape of the inlet 113 may be a shape corresponding to the size and shape of the inlet 113 . For example, the stopper 150 may be inserted into the inlet 113 to prevent a reagent injected into the hollow part 111 from leaking out.

In addition, for example, the storage unit 110 inserts and inserts the stopper 150 into the inlet 113 to block the inlet 113, and the hollow part 111 through the upper opening 112 of the storage unit 110. Reagents may be injected into the reservoir to store the reagents.

Also, for example, when the upper opening 112 of the storage unit 110 filters reagents injected into the hollow portion 111 toward the lower side, residual reagent remaining inside the hollow portion 111 can be minimized. It may include an inclination so as to, but is not limited thereto.

Referring to FIG. 1 , the storage unit 110 may include a first storage unit 110a and a second storage unit 110b. For example, the first storage unit 110a and the second storage unit 110b may be provided in the same type, but are not limited thereto.

3 is a conceptual diagram illustrating a sample separation unit of the integrated microplastic pretreatment module device according to an embodiment of the present disclosure.

Referring to FIGS. 1 and 3 , the sample separation unit 140 of the apparatus 100 may include a connection unit 141 provided to be connected to the upper opening 112 of the storage unit 110 . For example, the connection unit 141 may be provided to connect the sample separation unit 140 and the storage unit 110 .

Also, referring to FIGS. 1 and 3 , the connection between the upper opening 112 and the connecting portion 141 may include screw coupling. For example, the upper opening 112 may have a screw thread formed on an outer circumferential surface, and the connecting portion 141 may have a screw thread formed on an inner circumferential surface.

Referring to FIG. 1 , the connection part 141 of the sample separator 140 may include a first connection part 141a and a second connection part 141b.

The first connection part 141a may be connected to the top opening 112 of the first storage part 110a, and the second connection part 141b may be connected to the top opening 112 of the second storage part 110b.

For example, referring to FIG. 1 , the sample separation unit 140 includes a first connection unit 141a and a second connection unit 141b, so that the first storage unit 110a and the second storage unit 110b are It may be connected to the sample separation unit 140.

For example, referring to FIG. 1 , the first storage part 110a may be connected with the upper opening 112 facing the lower side (6 o'clock direction in FIG. 1) so as to be connected to the first connection part 141a, , The second storage unit 110b may be connected with the upper opening 112 facing upward (12 o'clock direction in FIG. 2) so as to be connected to the second connection unit 141b.

Also, for example, the sample separation unit 140 may be provided such that the first connection unit 141a and the second connection unit 141b communicate with each other. At this time, for example, when the first storage unit 110a is connected to the first connection unit 141a and the second storage unit 110b is connected to the second connection unit 141b, the first storage unit 110a and The second storage unit 110b is connected, and the sample in the first storage unit 110a may be moved to the second storage unit 110b.

Referring to FIG. 1 , the first storage unit 110a may primarily store reagents. In addition, the second storage unit 110b filters reagents injected into the first storage unit 110b from the filter member 120 to be described later, and may store the filtered reagents.

That is, for example, the sample separation unit 140 may be provided such that the first storage unit 110a and the second storage unit 110b are connected to each other.

Also, referring to FIGS. 1 and 3 , the sample separating unit 140 may include a plate fixing unit 142 . The plate fixing part 142 may be provided to enable insertion of the filtering plate 130 .

4 is a conceptual diagram for explaining a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure, and FIG. 5 is a conceptual diagram illustrating a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure. It is a conceptual diagram schematically showing the viewed state.

Referring to FIGS. 4 and 5 , the filtering plate 130 may be provided as a plate member 131 . For example, the filtering plate 130 may be formed into a shape insertable into the plate fixing part 142 . For example, the filter plate 130 corresponds to the shape of the plate fixing part 142, such as width, height, and size, but may be provided in a form that can be inserted into the plate fixing part 142.

In addition, for example, the filtering plate 130 is longer than the length of the plate fixing part 142 (length corresponding to the 3 o'clock - 9 o'clock direction in FIG. 1), and is inserted or separated from the plate fixing part 142. The work may be easier.

6 is a conceptual diagram schematically illustrating a filter member and a filter plate of a microplastic pretreatment integrated module device according to an embodiment of the present disclosure.

Also, referring to FIGS. 4 to 6 , the filter plate 130 may include a filter mounting portion 132 . The filter mounting portion 132 may be provided to enable mounting of the filter member 120 on one side of the plate member 131 . For example, one side of the plate member 131 may be in the 9 o'clock direction based on FIGS. 4 and 5 .

Referring to FIG. 6 , the filter member 120 may be provided to enable collection of the microplastic sample 200 present in the object. For example, the size of pores in the mesh of the filter member 120 may be provided in a standard that allows the microplastic sample 200 to be collected. In addition, the size of the air gap of the mesh network of the filter member 120 may be provided in a standard that is obvious to those skilled in the art.

Referring to FIGS. 5 and 6 , the filter mounting portion 132 may be provided to correspond to the shape of the filter member 120 . For example, referring to FIG. 5 , the filter mounting portion 132 and the filter member 120 may have circular shapes in a plan view, but are not limited thereto.

For example, the filter member 120 may have a diameter of 10 mm or 25 mm, and the filter mounting portion 132 may be provided with a size that allows the filter member 120 to be mounted. However, the diameter of the filter member 120 is not limited thereto.

In addition, for example, the filter member 120 is located in the inner space of the filter mounting portion 132, and a silicon seal (with respect to the top or bottom of the filter member 120 (in the 12 o'clock direction or 6 o'clock direction in FIG. 6)) silicone gasket) may be placed. Also, as another example, a gap may be formed in the filter mounting portion 132 along an inner circumferential direction to allow the filter member 120 to be fitted and fixed.

Referring to FIG. 5 , the filter mounting portion 132 may be opened so that an object may pass therethrough. For example, the filter mount 132 may be formed alone with respect to one side of the filter plate 130 .

1 and 4, the filtering plate 130 may be provided so that the storage unit 110 communicates with the outside when one side of the filtering plate 130 is inserted into the plate fixing unit 142 and mounted. . For example, one side of the filtering plate 130 may be in the 9 o'clock direction based on FIGS. 1 and 4 . That is, for example, when one side of the filter plate 130 is inserted into the plate fixing part 142 , the filter mounting part 132 may be inserted into the plate fixing part 142 .

In addition, referring to FIGS. 1 and 4 , when the other side of the filtering plate 130 is inserted into the plate fixing part 142 and mounted, the storage part 110 may be separated from the outside. For example, the other side of the filtering plate 130 may be in the 3 o'clock direction based on FIGS. 1 and 4 . That is, for example, when the other side of the filter plate 130 is inserted into the plate fixing part 142, the plate member 131 may be inserted into the plate fixing part 142.

For example, one side of the filter plate 130 is provided with a filter mounting portion 132 opened so that the storage portion 110 communicates with the outside, and the other side has a plate member 131 so that the storage portion 110 is separated from the outside. As provided, the storage unit 110 can be separated or opened according to the insertion direction with one filtering plate 130.

For example, the present device 100 may be a device applied to a pretreatment process in order to increase the precision of analysis of the microplastic sample 200. In addition, for example, the apparatus 100 includes a storage unit 110 in which a pretreatment process is performed, a sample separation unit responsible for separating samples and connecting the first storage unit 110a and the second storage unit 110b. 140, and an inn plate 130 responsible for separating the sample and sealing the solution. In addition, for example, the device 100 may be used by connecting two storage units 110 having the same structure, and may be used flexibly according to a sample state.

Meanwhile, hereinafter, a method for extracting microplastics (hereinafter, referred to as 'the present method for extracting microplastics') using the microplastics pretreatment integrated module device according to an embodiment of the present application will be described. However, since this microplastic extraction method is a method of extracting microplastics using the device 100 described above, it shares the same or corresponding technical features as the device 100, and the configuration and The same reference numerals are used for the same or similar components, and redundant descriptions will be simplified or omitted.

7 is a flow chart illustrating a method for extracting microplastics using an integrated microplastics pretreatment module device according to an embodiment of the present invention, and FIG. 8 is a microplastics extraction method using an integrated microplastics pretreatment module device according to an embodiment of the present application. It is a conceptual diagram to explain the method.

Referring to (a) of FIGS. 7 and 8 , the microplastic extraction method may include a step of injecting reagents and samples into the storage unit 110 (step S110). For example, the method for extracting microplastics may be used to collect and analyze samples of microplastics present in a subject, but is not limited thereto.

For example, in step S110, the user inserts the stopper 150 into the inlet 113 of the storage unit 110 to block the inlet 113, and through the upper opening 112 of the storage unit 110, the hollow part Reagents and samples can be injected into (111). For example, in step S110, the reagent may be an oxidizing reagent.

For example, in step S110, the user may remove organic materials by putting the device 100 in an oven.

Referring to (a) and (b) of FIGS. 7 and 8 , the microplastic extraction method may include a step of inserting one side of the filter plate 130 into the plate fixing part 142 (step S120). . For example, one side of the filter plate 130 may be in a direction in which the filter mounting portion 132 is provided.

For example, referring to (a) and (b) of FIG. 8 , in step S120, the filter member 120 is mounted on the filter mounting portion 132 of the filter plate 130, and the filter member 120 is mounted. One side of the filtering plate 130 may be inserted into the plate fixing part 142 and mounted.

That is, for example, in step S120, after completion of the reaction in step S110, the filter member 120 may be mounted on the filter plate 130 and the filter plate 130 may be moved. At this time, when moving the filter plate 130, the storage unit 110 may be turned over, and the storage unit 110 may be slightly loosened to prevent reagents from flowing down. After the movement of the filter plate 130 is completed, the storage unit 110 may be tightened again.

In addition, referring to (b) and (c) of FIGS. 7 and 8, in this microplastic extraction method, the storage unit 110 is turned over so that the upper opening 112 faces downward to filter the reagent to remove foreign substances from the sample. A step of partially removing (step S130) may be included.

For example, referring to (b) and (c) of FIG. 8 , in step S130, the filter plate 130 equipped with the filter member 120 is inserted into the plate fixing part 142 and mounted, and stored. By turning the part 110 so that the top opening 112 faces downward, the reagent may pass through the filter member 120 to partially remove foreign substances from the sample. At this time, the filter member 120 may be provided to have a size of pores of the mesh network that allows foreign matter to pass through and prevents the microplastic sample 200 from passing through.

For example, if the reagent does not come down well (if not filtered) in step S130, a syringe, a pump, etc. may be connected to create a negative pressure in the hollow part 111 of the storage unit 110 so that the reagent is filtered.

In addition, for example, referring to (b) and (c) of FIG. 8, in step S130, the pretreatment reagent is filtered and distilled water is injected into the storage unit 110 to filter and wash the sample 2 to 3 times with distilled water. there is.

In addition, for example, referring to (d) of FIG. 8, in this microplastic extraction method, a density separation reagent is injected into the hollow part 111 of the storage part 110, and the sample is removed from the filter member 120 through ultrasonic treatment. It may include the step of separating.

Hereinafter, a microplastics density separation method (hereinafter referred to as 'this microplastics density separation method') using the integrated microplastics preprocessing module device according to an embodiment of the present application will be described. However, since this microplastic density separation method is a method of density separation of microplastics using the above-described device 100, it shares the same or corresponding technical features as the device 100, and the device 100 The same reference numerals are used for configurations identical to or similar to configurations, and redundant descriptions will be simplified or omitted.

9 is a flowchart illustrating a microplastics density separation method using an integrated microplastics preprocessing module device according to an embodiment of the present invention, and FIGS. 10A and 10B are a microplastics preprocessing integrated module device according to an embodiment of the present application. It is a conceptual diagram to explain the microplastic density separation method used.

Referring to FIGS. 9 and 10a , in this microplastic density separation method, after connecting the second storage unit 110b to the sample separation unit 140 connected to the first storage unit 110a, the plate fixing unit 142 It may include a step of inserting the other side of the filter plate 130 into (step S210).

For example, in step S210, the first storage unit 110a may be in a state in which the density separation reagent is injected.

In addition, referring to (a) of FIG. 10A, in step S210, the first storage unit 110a has the upper opening 112 on the upper side of the sample separating unit 140 (based on FIG. 10A, 12 o'clock direction) at the lower side ( 10A, 6 o'clock direction), and the second storage unit 110b has an upper opening 112 on the lower side (6 o'clock direction of FIG. 10A) of the sample separator 140 (refer to FIG. 10A). 10a, 12 o'clock direction) may be arranged and connected. For example, the upper opening 112 of the first storage unit 110a may be connected to the first connection unit 141a of the sample separation unit 140, and the upper opening 112 of the second storage unit 110b may be It may be connected to the second connection part 141b of the sample separator 140.

In addition, for example, in step S210, the other side of the filter plate 130 may be inserted into the plate fixing part 142 so that the first storage part 110a and the second storage part 110b are separated from each other.

In addition, for example, in step S210, when the filter mounting portion 132, which is one side of the filter plate 130, is not mounted on the plate fixing portion 142 and is located outside the sample separation unit 140, the filter mounting portion The filter member 120 attached to 132 can be removed.

That is, for example, in step S210, the second storage unit 110b is connected to the first storage unit 110a and the sample separation unit 140, and the first storage unit 110a and The second storage unit 110b may be separated from each other, and the filter member 120 mounted on the filter plate 130 may be removed.

Referring to (b) of FIGS. 9 and 10A , the microplastic density separation method may include a step of injecting a density separation solution into the second storage unit 110b (step S220).

For example, in step S220, the density separation solution may be injected through the inlet 113 of the second storage unit 110b, but is not limited thereto.

In addition, referring to FIGS. 9 and 10A (b), the microplastic density separation method includes the steps of inserting one side of the filter plate 130 from which the filter member 120 is removed into the plate fixing part 142 ( Step S230) may be included.

For example, in step S230, the first storage portion 110a and the second storage portion 110b are opened through the opened filter mounting portion 132 of the filter plate 130 to communicate with each other. Density separation may be performed within the device 100 .

For example, this microplastic density separation method is compared to the conventional density separation method in which solvent is poured through a separation process on one cup using the first storage unit 110a and the second storage unit 110b. , It is possible to accurately specify at which floor height the density separation takes place (that is, at what depth and height the density separation takes place), and the floating of the separated inorganic material through spatial separation with inorganic materials other than microplastics at the bottom It increases the efficiency of density separation.

In addition, referring to FIGS. 9 and 10A (c) , in this microplastic density separation method, after the density separation is completed, the other side of the filter plate 130 is inserted into the plate fixing part 142, and the second storage A step of removing the part 110b (step S240) may be included.

For example, after removing the filter plate 130 from the device 100 where the density separation is completed in step S240, the other side of the filter plate 130 is inserted again to form the first storage unit 110a and the second storage unit ( 110b) can be separated from each other. Also, for example, at this time, the connection between the first storage unit 110a and the second storage unit 110b may be released by removing the second storage unit 110b.

Referring to FIGS. 9 and 10B , the method for separating the density of microplastics is a microplastic sample by mounting the filter member 120 on the plate fixing part 142 and then filtering the reagent stored in the first storage part 110a. It may include a step of recovering (200) (step S250).

For example, in step S250 , when the other side of the filter plate 130 is inserted into the plate fixing part 142 , the filter member 120 may be mounted on the filter mounting part 132 of the filter plate 130 .

In addition, for example, in step S250 , before filtering the reagent stored in the first storage unit 110a, one side of the filtering plate 130 may be inserted into the plate fixing unit 142 . At this time, when the filtering plate 130 is moved, it is turned over and the first storage part 110a is slightly loosened so that the reagent does not flow down. Also, for example, after the movement of the filter plate 130 is completed, the first storage part 110a may be tightened again.

For example, in step S250, the apparatus 100 may filter the density separation reagent using the filter member 120 mounted on the filter plate 130.

In addition, for example, in the microplastic density separation method, the microplastic sample 200 may be washed by injecting distilled water or ethanol into the hollow part 111 of the first storage part 110a through the inlet 113. . In addition, at this time, the upper opening 112 of the first storage part 110a faces the lower side (based on (a) and (b) of FIG. 10B, the 6 o'clock direction), and the inlet 113 faces the upper side (( a) and (b) standard, 12 o'clock direction), the microplastic sample 200 attached to the inner circumferential surface of the first storage part 110a by injecting distilled water or ethanol through the inlet 113 may be moved towards the filter element 120 .

In addition, for example, in the microplastic density separation method, the microplastic sample 200 collected in the filter member 120 may be analyzed by removing the filter plate 130 from the plate fixing part 142 .

For example, the apparatus 100 may be equipped to perform an organic matter removal process and a density separation process among microplastic pretreatment procedures.

The above description of the present application is for illustrative purposes, and those skilled in the art will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present application. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present application is indicated by the following claims rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof should be construed as being included in the scope of the present application.

100: microplastic pretreatment integrated module device
110: storage unit
110a: first storage unit
110b: second storage unit
111: hollow part
112: top opening
113: inlet
120: filter member
130: filtering plate
131: plate member
132: filter mounting part
140: sample separation unit
141: connection part
141a: first connection part
141b: second connection part
142: plate fixing part
150: stopper
200: microplastic sample

Claims (11)

In the microplastic pretreatment device,
A storage unit provided to form a hollow portion having an upper opening;
A filter member provided to enable collection of a microplastic sample present in the subject;
Doedoe provided as a plate member, a filter plate including a filter mounting portion provided to enable the mounting of the filter member on one side of the plate member; and
A sample separation unit including a connection unit provided to be connectable to an upper end opening of the storage unit and a plate fixing unit provided to allow insertion of the filtering plate,
the storage unit,
A first storage unit for primarily storing reagents; and
A microplastic pretreatment integrated module device comprising a second storage unit for filtering reagents injected into the first storage unit from the filter member and storing the filtered reagents. According to claim 1,
The filter plate,
When one side of the filter plate is inserted into the plate fixing part and mounted, the storage part is provided to communicate with the outside,
When the other side of the filter plate is inserted into the plate fixing part and mounted, the microplastic pretreatment integrated module device is provided so that the storage part is separated from the outside. According to claim 1,
The filter mounting part,
It is provided to correspond to the shape of the filter member, and is opened to allow the object to pass through, the microplastic pretreatment integrated module device. delete According to claim 1,
the storage unit,
The microplastic pretreatment integrated module device is provided with an inlet at the lower part of the circumferential member of the storage unit to allow reagent injection into the hollow part. According to claim 5,
the storage unit,
Further comprising a stopper provided in a shape corresponding to the shape of the injection port, the microplastic pretreatment integrated module device. According to claim 1,
The connection part of the sample separation part,
a first connection part connected to an upper opening of the first storage part; and
A microplastic pretreatment integrated module device comprising a second connection portion connected to the upper opening of the second storage portion. According to claim 1,
The connection of the upper opening and the connecting portion includes screw coupling, microplastic pretreatment integrated module device. A microplastic extraction method using the integrated microplastic pretreatment module device according to claim 1,
(a) injecting reagents and samples into the storage unit;
(b) inserting one side of the filter plate into the plate fixing part; and
(c) inverting the storage part so that the top opening faces downward and filtering the reagent to partially remove foreign substances from the sample. A microplastic density separation method using the integrated microplastic pretreatment module device according to claim 1,
(a) connecting the second storage unit to the sample separator connected to the first storage unit, and then inserting the other side of the filter plate into the plate fixing unit;
(b) injecting a density separation solution into the second storage unit;
(c) inserting one side of the filter plate from which the filter member is removed into the plate fixing part;
(d) after density separation is completed, inserting the other side of the filter plate into the plate fixing part and removing the second storage part; and
and (e) collecting the microplastic sample by filtering the reagent stored in the first storage unit after mounting the filter member on the plate fixing unit. According to claim 10,
In step (a),
The first storage unit is disposed and connected to the upper side of the sample separation unit so that the top opening faces downward,
Wherein the second storage unit is disposed and connected to the upper side of the sample separation unit so that the upper opening faces upward.

Images