Underwater micro-plastic microscopic Raman in-situ measurement system

An in-situ measurement and micro-Raman technology, which is applied in the direction of measurement devices, Raman scattering, and analysis materials, achieves high application value and ingenious system structure design

CN114813492APending Publication Date: 2022-07-29OCEAN UNIV OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-07-29

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Abstract

The invention discloses an underwater micro-plastic microscopic Raman in-situ measurement system, which comprises a support frame, and a detection cabin, a filter cabin and a fluid control cabin which are arranged in the support frame, and the filter cabin is fixedly arranged below a detection window of the detection cabin and is connected with the fluid control cabin below the filter cabin through a pipeline. According to the scheme, the laser, the scanning galvanometer and the spectrograph are combined, so that Raman spectrum scanning detection on the micro-plastic is realized; the structure of the filtering cabin is specially designed to filter and enrich micro-plastic particles in water, and long-term, real-time and continuous in-situ measurement of the system is realized by adopting a mode that a small waterproof motor drives a filter screen to overturn and change a sample; besides, a detection mode of combining a microscopic Raman spectrum and an image is adopted, the morphology of the micro-plastic particles in the ocean is represented and the types of the micro-plastic particles are rapidly identified through the obtained spectrum information, and the system is ingenious in structural design and high in practical application value.
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Description

technical field

[0001] The invention belongs to the field of in-situ detection of marine water quality environment, and particularly relates to an in-situ measurement system for underwater microplastic micro-Raman. Background technique

[0002] In recent years, due to the large-scale use and discharge of plastics, these plastics have been broken into microplastic particles by environmental effects and accumulated in the ocean, causing serious harm to the marine ecosystem. A large number of studies have shown that microplastics with a particle size of less than 5 mm are ubiquitous in the marine environment. As a new marine environmental problem, a rapid analysis and detection technology is urgently needed to objectively evaluate the distribution of microplastics in the global ocean and their potential impacts.

[0003] At present, the identification and identification methods of microplastics mainly include spectroscopic analysis (FTIR, Raman) and thermal analysis (Py-GC-MS, ...

Examples

Embodiment Construction

[0030] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. Numerous specific details are set forth in the following description to facilitate a full understanding of the present invention, however, the present invention may also be practiced in other ways than those described herein, and therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] This embodiment proposes an underwater microplastic micro-Raman in-situ measurement system, such as figure 1 As shown, it includes a support frame 4 and a detection cabin 1, a filter cabin 2 and a fluid control cabin 3 arranged in the support frame 4. The filter cabin 2 is fixedly arranged under the detection window of the detection cabin 1, and passes through the pipeline and the fluid below it. The control cabin 3 is connected...