CN114486705A - Device for simulating atomization of micro-plastic in various outdoor environments and application thereof - Google Patents
Device for simulating atomization of micro-plastic in various outdoor environments and application thereof Download PDFInfo
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- CN114486705A CN114486705A CN202210102801.3A CN202210102801A CN114486705A CN 114486705 A CN114486705 A CN 114486705A CN 202210102801 A CN202210102801 A CN 202210102801A CN 114486705 A CN114486705 A CN 114486705A
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
The invention discloses a device for simulating weathering of micro-plastics in various outdoor environments, which comprises a weathering box, a power line, lamp holders, switches, ultraviolet lamps, culture dishes, air vents and fans, wherein the weathering box comprises a box cover and a box body, the power line is directly connected with the lamp holders and the switches, the ultraviolet lamps are vertically and suspendedly arranged at the lower parts of the corresponding lamp holders, the culture dishes are horizontally arranged under the ultraviolet lamps, the distance between the culture dishes and the ultraviolet lamps is kept at 30cm, the micro-plastics to be weathered are placed in the culture dishes, the air vents are arranged at the left side of the box body, and the fans are arranged at the right side of the box body horizontally corresponding to the air vents. According to the invention, by simulating an ultraviolet light irradiation environment in actual solar radiation, the weathering effect of the micro plastic in a natural environment can be effectively explored, and a research basis is provided for the weathering research of the micro plastic. The invention has the characteristics of simple structure, low cost, simple and convenient operation and the like, and is beneficial to popularization and application.
Description
Technical Field
The invention belongs to the technical field of micro-plastic weathering, and particularly relates to a device for simulating weathering of micro-plastic in various outdoor environments and application thereof.
Background
At present, plastic pollution has been classified as a major global environmental problem, and the destruction of ecology by micro-plastics as a novel pollutant has received wide attention on a global scale. At present, plastics particles with a particle size of less than 5mm are generally defined internationally as microplastics. The micro plastic in the environment mainly has two sources, firstly, the large plastic fragments are cracked step by step to finally form the micro plastic with the particle size less than 5mm, and common types comprise Polyethylene (PE), polyvinyl chloride (PVC), Polystyrene (PS) and the like; and the directly used plastic micro-beads are discharged, including the use of ground and clean cosmetics and the like in plastic product processing places. In offshore environments, micro-plastic contamination is increasing due to random stocking of plastic waste, aquaculture activities and the development of the offshore tourism industry. The micro plastic as a carrier has a remarkable enriching effect on organic chemical pollutants and the like. And the low density will migrate with the way of air, water flow and food chain, and the higher density may be retained in the water or settled.
In natural environment, the micro plastic is gradually weathered by the influence of sunlight irradiation and other environmental factors, but the micro plastic is not clear in the related research. However, in actual environments, weathering of the micro plastic is inevitable in long-distance migration and transition processes, and the change of physicochemical properties of the micro plastic after weathering is not negligible, so that research on weathering process simulation of the micro plastic is important.
The invention designs a device for simulating weathering of micro-plastic in various outdoor environments, which can be used for simulating the actual weathering environment of the micro-plastic on one hand, so that the specific process and behavior of the micro-plastic in the environment are simulated, and the premise is provided for the follow-up exploration of the interaction between the weathering micro-plastic and environmental pollutants; on the other hand, the device can simulate the weathering conditions of the micro-plastic in various outdoor environments, and provides a good experimental basis for the research of a comprehensive weathering mechanism of the micro-plastic. In addition, the existing device for simulating the weathering of the micro-plastic is fewer, and the weathering device is innovated and improved on the basis and can better solve various problems in the experimental process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device for simulating weathering of micro-plastic in various outdoor environments and application thereof. The weathering device can simulate the weathering process of the micro-plastic in various outdoor environments by simulating the actual outdoor weathering conditions of the micro-plastic, and provides a good foundation for the subsequent study on the characteristics of the weathered micro-plastic and the weathering behavior of the micro-plastic.
In order to achieve the purpose, the invention provides the following technical scheme:
the weathering box comprises a box cover and a box body, the power cord is directly connected with the lamp holder and the switch, the ultraviolet lamps are vertically suspended and mounted at the lower parts of the corresponding lamp holders, the culture dish is horizontally placed under the ultraviolet lamps, the micro plastic to be weathered is placed in a culture medium in the culture dish, and the vent holes and the fan are respectively arranged on two sides of the box body.
Preferably, the device is in a square shape, and the box body and the box cover are both made of wood.
Preferably, the total number of the lamp holders and the switches is 4, and the lamp holders and the switches are installed on the case cover in an evenly distributed manner.
Preferably, the total using number of the ultraviolet lamps is 4, and the ultraviolet lamps are respectively arranged below the corresponding lamp holders in a vertically suspended mode.
Preferably, the power of the ultraviolet lamp is 15W, and the wavelength of the emitted ultraviolet light is 254 nm.
Preferably, the culture dishes are horizontally and uniformly arranged right below the ultraviolet lamp, and the upper surface of each culture dish is 30cm away from the ultraviolet lamp.
Preferably, the culture dish is a glass culture dish, and the placing number of the culture dish, the simulated environment and the specific material can be determined according to actual requirements.
Preferably, the vent hole is located at the upper left side of the box body, and the fan is mounted at the upper right side of the box body and is kept at the same horizontal plane position with the vent hole at the left side.
Preferably, the device for simulating weathering of the micro-plastic in various outdoor environments is applied as a simulation device for the weathering process of the micro-plastic in natural environment.
Preferably, the application of the device for simulating weathering of the micro-plastic in various outdoor environments as a simulation device for simulating weathering process of the micro-plastic in natural environment comprises the following steps:
(1) weighing micro plastic samples with required mass and corresponding weight, uniformly spreading the micro plastic samples on the inner side of a dry and clean glass culture dish, and if the weathering effect of the micro plastic in different liquid environments such as seawater and the like needs to be researched, adding corresponding liquid into the culture dish and uniformly distributing the micro plastic;
(2) horizontally placing the culture dish filled with the micro-plastic sample into the bottom of a weathering box, turning on an ultraviolet lamp, and starting to simulate an outdoor solar radiation weathering environment;
(3) in the weathering process, every 24h is taken as a weathering period, and the micro-plastic needs to be turned over at least 1-2 times in one period, so as to ensure uniform irradiation. And the air is exhausted for more than 30min before the weathering box is opened every time, so that the generated ozone is removed in time, and the safety is ensured;
(4) depending on the specific purpose of the study, sampling analysis was performed at the determined times.
Due to the adoption of the scheme, the invention has the beneficial effects that: according to the invention, by simulating an ultraviolet light irradiation environment in actual solar radiation, the weathering effect of the micro-plastic in a natural environment can be effectively explored, so that the specific process and behavior of weathering of the micro-plastic in the environment are simulated, and the method has guiding significance for actual weathering and treatment of the micro-plastic. The invention has the characteristics of simple structure, low cost, simple and convenient operation and the like, and is beneficial to popularization and use.
Drawings
Fig. 1 is a perspective structural diagram of the present invention.
Fig. 2 is a schematic front structural view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic side view of the present invention.
The symbols in the figures represent: 1. a culture dish; 2. a vent hole; 3. a fan; 4. an ultraviolet lamp; 5. a lamp holder and a switch; 6. a power line.
Detailed Description
The present invention will be described in more detail below with reference to embodiments of the present invention and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided only for explaining the present invention and not for limiting the present invention.
It should be understood that the drawings are designed and described with the understanding that the present disclosure is to be considered an exemplification of the principles of the invention and is not intended to limit the scope of the invention. Any modification of the structure, change of the ratio or adjustment of the size of the structure should still fall within the scope of the present disclosure without affecting the function and the purpose of the present disclosure.
As shown in fig. 1, 2, 3 and 4, the invention relates to a device for simulating weathering of micro-plastic in various outdoor environments, which comprises a weathering box, a power line 6, a lamp holder and switch 5, an ultraviolet lamp 4, a culture dish 1, an air vent 2 and a fan 3, wherein the weathering box comprises a box cover and a box body, the power line 6 is directly connected with the lamp holder and the switch 5, the ultraviolet lamp 4 is vertically suspended and installed at the lower part of the corresponding lamp holder, the culture dish 1 is horizontally arranged right below the ultraviolet lamp 4, the distance between the culture dish 1 and the ultraviolet lamp 4 is kept at 30cm, the micro-plastic to be weathered is placed in a culture medium, the air vent 2 is arranged at the left side of the box body, and the fan 3 is installed at the right side of the box body horizontally corresponding to the air vent 2. The device is in a cube shape, and the box body and the box cover are both made of wood. The total number of the lamp holders and the switches 5 used is 4, and the lamp holders and the switches are mounted on the box cover in an evenly distributed manner. The total using number of the ultraviolet lamps is 4, and the ultraviolet lamps are respectively arranged below the corresponding lamp holders in a vertical suspension mode. The power of the ultraviolet lamp 4 is 15W, and the wavelength of the emitted ultraviolet light is 254 nm. The culture dishes 1 are horizontally and uniformly placed under the ultraviolet lamp 4, and the plane of each culture dish 1 is 30cm away from the ultraviolet lamp 4. The culture dish 1 is a glass culture dish, and the placing quantity, the simulated environment and the specific material of the culture dish 1 can be determined according to actual requirements. The vent hole 2 is positioned at the upper part of the left side of the box body. The fan 3 is arranged at the upper part of the right side of the box body and is kept horizontal with the left vent hole 2.
The device for simulating weathering of the micro-plastic in various outdoor environments is used as a simulation device for the weathering process of the micro-plastic in natural environment.
The present invention will be further described with reference to the following examples.
Example 1:
the practical application of the device for simulating weathering of micro-plastic in various outdoor environments of the embodiment comprises the following steps:
(1) weighing a certain mass of micro plastic PS and PE samples, and uniformly and flatly paving the samples on the inner side of a dry and clean glass culture dish (researching the weathering conditions of the micro plastic PS and the PE in the air under ultraviolet light respectively);
(2) covering a glass cover on a culture dish filled with a micro-plastic sample, horizontally placing the culture dish into the bottom of an ultraviolet lamp weathering box, opening the ultraviolet lamp, and starting to simulate an outdoor solar radiation weathering environment (the weathering test is divided into 6 groups in total, and the weathering time is 1 month, 2 months and 3 months respectively);
(3) in the weathering process, every 24h is taken as a weathering period, and the micro-plastic needs to be turned over at least 1-2 times in one period, so as to ensure uniform irradiation. And the air is exhausted for more than 30min before the weathering box is opened every time, so that the generated ozone is removed in time, and the safety is ensured;
(4) and taking out the PS weathered sample and the PE weathered sample from each group at corresponding time points, cleaning and filtering the samples for a plurality of times by using ultrapure water, drying the samples in a 50 ℃ oven, and collecting the samples for later use.
Example 2:
the practical application of the device for simulating weathering of the micro plastic in various outdoor environments comprises the following steps:
(1) weighing a certain mass of micro plastic PS and PE samples, uniformly and flatly paving the samples on the inner side of a dry and clean glass culture dish, adding ultrapure water, and uniformly distributing the micro plastic (researching the weathering conditions of the micro plastic PS and the PE in the pure water under ultraviolet light respectively);
(2) covering a glass cover on a culture dish filled with a micro-plastic sample, horizontally placing the culture dish into the bottom of an ultraviolet lamp weathering box, opening the ultraviolet lamp, and starting to simulate an outdoor solar radiation weathering environment (the weathering test is divided into 6 groups in total, and the weathering time is 1 month, 2 months and 3 months respectively);
(3) in the weathering process, every 24h is taken as a weathering period, and the micro-plastic needs to be turned over at least 1-2 times in one period, so as to ensure uniform irradiation. And the water loss in the culture dish needs to be observed in time and supplemented periodically. Before the weathering box is opened each time, the air needs to be exhausted for more than 30min, and the generated ozone is timely discharged, so that the safety is ensured;
(4) and taking out the PS weathered sample and the PE weathered sample from each group at corresponding time points, cleaning and filtering the samples for a plurality of times by using ultrapure water, drying the samples in a 50 ℃ oven, and collecting the samples for later use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments and the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments. Those skilled in the art should appreciate that many modifications and variations are possible in light of the above teaching without departing from the scope of the invention.
Claims (10)
1. The device for simulating weathering of the micro plastic in various outdoor environments is characterized by comprising a weathering box, a power line, a lamp holder, a switch, an ultraviolet lamp, a culture dish, an air vent and a fan, wherein the weathering box comprises a box cover and a box body, the power line is directly connected with the lamp holder and the switch, the ultraviolet lamp is vertically suspended and installed at the lower part of the corresponding lamp holder, the culture dish is horizontally placed under the ultraviolet lamp, the micro plastic to be weathered is placed in a culture medium in the culture dish, and the air vent and the fan are respectively arranged on two sides of the box body.
2. The device for simulating weathering of micro plastic in various outdoor environments of claim 1, wherein the device is square and the box body and the box cover are made of wood.
3. The device of claim 1, wherein the total number of the light holders and the switches is 4, and the light holders and the switches are mounted on the cover in a uniformly distributed manner.
4. The device of claim 1, wherein the total number of uv lamps used is 4, each mounted in a vertically suspended manner below a corresponding lamp holder.
5. The device of claim 1, wherein the ultraviolet lamp has a power of 15W and emits ultraviolet light having a wavelength of 254 nm.
6. The device of claim 1, wherein the culture dishes are horizontally and uniformly placed directly under the UV lamps, and the upper surface of each culture dish is 30cm from the UV lamps.
7. The device for simulating weathering of micro plastic in various outdoor environments of claim 1, wherein the culture dishes are glass culture dishes, and the number of the culture dishes and the simulated environment and specific materials can be determined according to actual requirements.
8. The device for simulating weathering of micro plastic in various outdoor environments of claim 1, wherein the ventilation hole is located at the upper left side of the housing, and the fan is installed at the upper right side of the housing and is kept at the same level as the ventilation hole at the left side.
9. Use of a device for simulating weathering of a micro-plastic according to claim 1 in a variety of outdoor environments as a simulation of the weathering process of a micro-plastic in natural environments.
10. Use of a device for simulating weathering of a micro-plastic in a plurality of outdoor environments according to claim 9 as a device for simulating weathering of a micro-plastic in natural environments, comprising the steps of:
(1) weighing micro plastic samples with required mass and corresponding weight, uniformly spreading the micro plastic samples on the inner side of a dry and clean glass culture dish, and if the weathering effect of the micro plastic in different liquid environments such as seawater and the like needs to be researched, adding corresponding liquid into the culture dish and uniformly distributing the micro plastic;
(2) horizontally placing the culture dish filled with the micro-plastic sample into the bottom of a weathering box, turning on an ultraviolet lamp, and starting to simulate an outdoor solar radiation weathering environment;
(3) in the weathering process, every 24 hours is taken as a weathering period, the micro plastic needs to be turned over at least 1-2 times in one period, uniform irradiation is ensured, the gas needs to be exhausted for more than 30min before the weathering box is opened every time, the generated ozone is timely discharged, and the safety is ensured;
(4) depending on the specific purpose of the study, sampling analysis was performed at the determined times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102801.3A CN114486705A (en) | 2022-01-28 | 2022-01-28 | Device for simulating atomization of micro-plastic in various outdoor environments and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210102801.3A CN114486705A (en) | 2022-01-28 | 2022-01-28 | Device for simulating atomization of micro-plastic in various outdoor environments and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583363A (en) * | 2024-01-04 | 2024-02-23 | 昆明理工大学 | Weathering method based on waste residue ultraviolet irradiation |
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| CN109520911A (en) * | 2018-11-01 | 2019-03-26 | 东南大学 | A kind of ultraviolet condensation ageing oven of intelligent remote control |
| CN210626289U (en) * | 2019-09-19 | 2020-05-26 | 常州纺检检验有限公司 | Fabric light-fast test device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520911A (en) * | 2018-11-01 | 2019-03-26 | 东南大学 | A kind of ultraviolet condensation ageing oven of intelligent remote control |
| CN210626289U (en) * | 2019-09-19 | 2020-05-26 | 常州纺检检验有限公司 | Fabric light-fast test device |
Non-Patent Citations (1)
| Title |
|---|
| 杨常富: "风化微塑料及其与典型抗生素的表界面行为研究", 中国优秀硕士学位论文全文数据库工程科技I辑 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583363A (en) * | 2024-01-04 | 2024-02-23 | 昆明理工大学 | Weathering method based on waste residue ultraviolet irradiation |
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