High-throughput microfluidic device for organic pesticide detection, and water sample detection method of same

Abstract

The invention discloses a high-throughput microfluidic device for organic pesticide detection, and a water sample detection method of the same, which relate to the technical field of organic pesticide detection and analysis. The high-throughput microfluidic device comprises a water sampling module, an organic pesticide microfluidic module and a Raman spectrum analysis module, wherein the water sampling module acquires a water sample and conveys the water sample to the organic pesticide microfluidic module, the water sample is fully collided and organically combined with the metal nano particles, and the mixture is further conveyed to the Raman spectrum analysis module for data analysis. In the device and the method provided by the invention, the microfluidic technology and the SERS (Surface Enhanced Raman Scattering) technology are combined, by the control on the flow of the to-be-tested water sample, the nano particles and the buffer solution, Raman spectrum detection on micro water sample can be realized, the environment requirement of the water sample detection is lowered, the detection speed is fast, and the accuracy is high. Meanwhile, the microfluidic device provided by the invention is compact in structure, besides being arranged in a test room, the microfluidic device also can be arranged in other work environment.

Description

technical field [0001] The invention relates to the technical field of organic pesticide detection and analysis, in particular to a microfluidic device for automatically detecting organic pesticides in water samples and a detection method thereof. Background technique [0002] The problem of environmental protection is a prominent problem in the construction of an environment-friendly society in our country. With the acceleration of industrialization and urbanization, the scale of cities continues to expand, and water consumption increases sharply. Untreated industrial wastewater is discharged beyond the standard, untreated domestic sewage directly enters water bodies, and a large amount of pesticides and fertilizers are unreasonably applied. And other ways to enter rivers, lakes, reservoirs, eventually leading to the widespread pollution of rivers and lakes in our country. According to statistics, 75% of the lakes in the country have varying degrees of eutrophication, and ...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is a method of irradiating the measured particles with a double-pulse laser, taking multi-frame images with a microscope, and then calculating the velocity distribution of the microfluidic channel, which has the advantages of high optical detection sensitivity and high displacement adjustment accuracy, but the system mainly uses For laboratory research, not suitable for special needs of field operations

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