Micro-fluidic chip and application of micro-fluidic chip in pesticide detection

Abstract

The invention discloses a micro-fluidic chip and application of the micro-fluidic chip in pesticide detection. The micro-fluidic chip comprises a base material and at least one detection unit distributed on the base material. The base material can rotate around a central point. Each detection unit comprises an extraction pool, a micro-channel and a detection pool, wherein the two ends of the micro-channel are communicated with the extraction pool and the detection pool respectively. The extraction pool, the detection pool and the central point are located on the same line. The extraction pool and the detection pool are located at the near end and the far end of the central point respectively. By means of micro-fluidic control, online separation and parallel detection of multiple samples can be achieved, wastage of reagents and samples is small, and the detection limit of pesticide is greatly reduced.

Description

technical field [0001] The application belongs to the fields of environmental detection and food safety, and in particular relates to a microfluidic chip and its application in pesticide detection. Background technique [0002] Due to its strong chemical stability, pesticides are easy to remain in crops and soil or other environments. When their concentration reaches a certain value (residual amount), they will accumulate in the body after being eaten by people, causing chronic poisoning. At present, the detection of pesticide residue pollution in my country is divided into three types, organophosphorus pesticides, pyrethroids and fungicides. Organophosphorus pesticides have the characteristics of high efficiency, safety, economy, convenience, and wide application range in the control of agricultural diseases and insect pests. It is the most widely used pesticide in my country at present. Of the 10 chemical pesticides listed in the "blacklist" of China's environmental priori...

AI Technical Summary

Problems solved by technology

There have been some reports on building a microfluidic chip platform for pesticide detection. The design of these chips does not give full play to the advantages of disc chips, and the actual operation is complicated, which is not conducive to the simultaneous detection of multiple samples, and the chip has a narrow scope of application and is flexible. poor sex

There has not been a substantial breakthrough in the application of high-resolution and high-sensitivity pesticide detection on chips

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