Portable seawater microplastic sampling and pretreating device and method

A microplastic and portable technology, applied in the field of marine environmental monitoring, can solve the problems of real-time observation of microplastics in unsuitable seawater, cumbersome steps, and easy contamination

Active Publication Date: 2018-03-16
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used sampling method for seawater microplastics in marine monitoring is the trawling method, but this method has cumbersome steps and complicated operations. The sample collection, separation, digestion, and enrichment processes need to be carried out separately, and the samples are exposed to the open environment for a long time. , highly susceptible to contamination, not suitable for real-time observation of seawater microplastics

Method used

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  • Portable seawater microplastic sampling and pretreating device and method
  • Portable seawater microplastic sampling and pretreating device and method
  • Portable seawater microplastic sampling and pretreating device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A portable seawater microplastic sampling and pre-processing device includes a housing 1, a water inlet 15 arranged at the upper end of the housing 1, a first screen 4, a second screen 5, a water outlet 8 arranged at the lower end of the housing 1, and a spray The head 10, the exhaust port 9, the electrothermal ultrasonic generating device 2 arranged in the housing 1 and connected to the water inlet 15, a pressure and flow control device 3 arranged outside the housing 1 and connected to the water inlet 15.

Embodiment 2

[0032] Compared with Embodiment 1, the electrothermal ultrasonic generating device 2 includes an inner shell 203, a second power source 205, an ultrasonic vibrator 201, a heating wire 202 and a switch 204. The heating wire 202 has a ring shape, and the ultrasonic vibrator 201 is located inside the ring structure formed by the heating wire. The electrothermal ultrasonic generating device 2 is a thermostatic heating ultrasonic device with a constant temperature of 60°C.

Embodiment 3

[0034] Compared with Embodiment 1, the pressure and flow control device 3 includes a first power source 303, a flow controller 301, and a pressure alarm 302. The water inlet 15 in the housing 1 is provided with a first switch sheet 6 and the shower head 10 is provided with a second switch sheet 7. The first switch sheet 6 and the second switch sheet 7 are made of polytetrafluoroethylene. The first screen 4 is a stainless steel material, and the second screen 5 is a polytetrafluoroethylene material. The pressure and flow control device 3 is connected to the water pump 16. A first valve 14 is provided at the water inlet 15 and a second valve 13 is provided at the water outlet 8. The spray head 10, the syringe 11 and the pressure pump 12 are connected by a three-way valve 20 . The water inlet 15 has a threaded structure and can be threadedly connected with the pressure and flow control device 3 or the water pump 16.

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Abstract

The invention belongs to the technical field of microplastic sampling, and discloses a portable seawater microplastic sampling and pretreating device and method. The portable seawater microplastic sampling and pretreatment device comprises a housing, a water inlet formed in the upper end of the housing, a first screen, a second screen, a water outlet formed in the lower end of the housing, a sprayhead, an exhaust opening, an electrothermal ultrasonic generator arranged in the housing and connected with the water inlet, and a pressure and flow control device arranged outside the housing and connected with the water inlet. The portable seawater microplastic sampling and pretreating method comprises the following steps: (1) device deployment; (2)sample collection; (3) inverted flushing and collecting; and (4) fine cleaning, collection, carrying and analysis. According to the technical scheme, innovative microplastic sampling and separating devices are adopted, the operation is simple andconvenient, time is saved, the system is closed to avoid contamination, and the portable seawater microplastic sampling and pretreating device and method are suitable for field quick acquisition andseparation of seawater microplastic samples and real-time analysis of the sample.

Description

Technical field [0001] The invention relates to microplastic sampling technology, belongs to the field of marine environment monitoring, and online monitoring of marine microplastics, in particular to a portable seawater microplastic sampling and pre-processing device and method. Background technique [0002] The size of microplastics is usually a collective term for different forms of plastics less than 5.0 mm, including plastic pellets, microfibers, plastic particles, foams, and films. In recent years, microplastics have become a new type of pollutant that has attracted much attention in the global ocean and estuary and coastal environments. In the hydrodynamic environment, microplastics can cause potential threats to marine life and human health through multiple physical, chemical, and biological processes such as drift, sedimentation, resuspension, biological migration, and organic pollutant adsorption. Biology produces physical hazards, and can release its own toxic chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/02G01N1/34G01N1/44
CPCG01N1/02G01N1/34G01N1/44
Inventor 高楠王茜孙中梁孔祥峰张艳敏褚东志袁达吕婧吴丙伟张颖张颖颖曹煊刘岩
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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