Double-optical signal trace pesticide residue rapid detection system

Abstract

The invention provides a double-optical signal trace pesticide residue rapid detection system. The double-optical signal trace pesticide residue rapid detection system comprises a double-optical signal generating device, a trace liquid detection reaction chamber, a spectrograph and a micro-sample feeding device, wherein the double-optical signal generating device is composed of a fluorescence excitation light source module and a double-light absorption light source module; the trace liquid detection reaction chamber is composed of a sample feeding pool, a sensing array guide plate, a sensing array substrate, a rotating table, a single diaphragm coupler and a stepping motor which are sequentially arranged from top to bottom; the micro-sample feeding device is composed of a micro-sample feeder, a three-way electromagnetic valve and a trace agricultural residue sample feeding pipe; the fiber probe I, the chamber and the fiber probe II of the spectrograph correspond to one another in a vertical direction. According to the double-optical signal trace pesticide residue rapid detection system, guide grooves communicated with a storage chamber are distributed in a spokewise mode, so that feeding samples into chambers one by one can be avoided; meanwhile, through cooperation with the double-optical signal generating device, the light source does not need to be driven by machines such asthe stepping motor or a slider, so that the size of the double-optical signal trace pesticide residue rapid detection system can be reduced, and the overall precision and the detecting efficiency ofthe double-optical signal trace pesticide residue rapid detection system can be improved.

Description

technical field [0001] The invention relates to a rapid detection system for trace pesticide residues, in particular to a rapid detection system for trace pesticide residues with dual light signals. Background technique [0002] While pesticides are necessary to protect our nutrition from insects and other pests, they also pose a huge threat to the environment and public health. Inappropriate pesticide use, including incorrect selection, high concentrations, and excessive use of pesticides on crops and seeds, may be linked to cancer risk among farmers and consumers. In addition, they are associated with endocrine disturbances and reproductive dysfunction. In addition, pesticides have many negative effects on the environment and natural cycles. Pesticides and their degradation products can contaminate the food chain through edible oil, crops, water, fruits and other related products, which are extremely harmful to human health because humans are at the top of the food chain...

AI Technical Summary

Problems solved by technology

[0004] Although some small-scale application development methods based on pesticide detection platforms have been reported, such as paper or readers based on enzyme activity inhibition, they can only detect one pesticide, and all of them only use a single signal, which cannot comprehensively detect trace amounts. Accurate detection of pesticide residues

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