Microplastic detection apparatus based on dielectric constant identification

Abstract

The invention relates to a microplastic detection apparatus based on dielectric constant identification. The microplastic detection apparatus comprises a feeder, a hopper, a material adding device, acapacitance measurement apparatus, and a collection tank; the hopper is arranged below the feeder, the feeder is connected with an end of the hopper, the capacitance measurement apparatus and the collection tank are arranged below the feeder in order, and the capacitance measurement apparatus is positioned over the collection tank. The microplastic detection apparatus has the advantages of simpleoperation, strong anti-interference capability, and high detection efficiency. The microplastic detection apparatus can be widely used in the technical fields of environment monitoring and identification detection of the microplastic in an environment medium.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring and identification and detection of microplastics in environmental media, in particular to a microplastic detection device based on dielectric constant identification. Background technique [0002] Since the invention of plastic materials, due to its good performance, it has been widely used by people. However, discarded plastic products will accumulate in the environment for a long time, and will be broken into small plastic fragments by physical and chemical effects, and can be transported over long distances. The marine environment is broken into smaller fragments by physical effects such as solar radiation, biological erosion, tidal and wave erosion. At present, people define these plastic material fibers, particles and fragments with sizes ranging from 1nm to 5mm as microplastics. Microplastics are widely distributed in the marine environment and are more likely to adsorb o...

AI Technical Summary

Problems solved by technology

At present, the methods for identifying plastic types at home and abroad mainly include traditional physical and chemical methods and new non-destructive testing methods. Traditional methods are used to identify plastic types based on appearance, density, combustion and solubility characteristics. The methods used include appearance identification, density identification, and solubility. method, pyrolysis method, combustion discrimination, and double thermal analysis method, these methods have different shortcomings, making it difficult to implement them in large quantities

The new qualitative analysis of microplastics mainly includes scanning electron microscopy, scanning electron microscopy, infrared spectroscopy, Raman spectroscopy, thermal desorption gas chromatography-mass spectrometry, etc. These devices are suitable for indoor analysis, but generally have high analysis costs and require high environmental conditions for analysis. Higher problem, difficult to be used for rapid detection of sampling site

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