A device for measuring micro-sediment in water by Raman spectroscopy and its application method

Abstract

The invention relates to a device for measuring trace sediment in water by Raman spectroscopy and a method for using the device. The device includes a container, the lower part of the container is conical in shape with a thick top and a thin bottom, and a heating mechanism is arranged on the outside of the upper part of the container. A cooling mechanism is provided in the middle of the container, and the water sample to be tested is filled in the container. The heating mechanism and the cooling mechanism make the water sample to be tested convective, promote the formation of sediment, and gather at the bottom of the container, the container The lower end is connected with the probe of the Raman spectrometer to realize the online analysis and detection of the sediment in the water sample to be tested. Compared with the prior art, the device has the advantages of simple structure, low cost, good safety, and good mobility, and can be directly used in combination with a portable Raman spectrometer, starts quickly when used, and can be applied to accident site sampling, detection and analysis.

Description

technical field [0001] The invention relates to the technical field of detecting micro-sediment in water, in particular to a device for measuring micro-sediment in water by Raman spectroscopy and a method for using the same. Background technique [0002] With the development of the chemical industry, chemicals have greatly improved human production levels and quality of life. At the same time, it also brings risks and hazards to human beings. The impact of pollutants on the environment and health has aroused widespread attention. All kinds of chemical accidents occur from time to time in the production, operation, storage, transportation, use and disposal of chemicals, posing a threat to the safety of the ecological environment and people's health. The technical requirements for the detection of trace harmful sediments in water are also getting higher and higher. [0003] Water is an indispensable substance in people's production and life, and the quality of the water envir...

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Problems solved by technology

[0006] Chinese patent CN204241432U discloses a solid-phase extraction and drying combination device in the determination of trace plasticizer pollutants in water, including a first high-level liquid adder, a second high-level liquid adder, a solid-phase extractor, a dehydration dryer, a waste The liquid tank and the collection tank, the liquid outlets of the first high-level liquid adder and the second high-level liquid adder are respectively connected to the liquid inlet of the solid-phase extractor through pipelines, and the liquid outlet of the solid-phase extractor is connected to the inlet of the dehydration dryer. The outlet of the dehydration dryer is connected to the liquid inlet of the collection tank, and a branch pipeline is connected to the pipeline between the solid phase extractor and the dehydration dryer. However, this device mostly uses electrical equipment, and the structure of the device is complicated and inconvenient. use

The collected samples cannot be directly used in gas chromatography and gas chromatography analyzers, and the samples are vulnerable to secondary pollution

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