Rapid domestic fruit and vegetable pesticide residue detection instrument

Abstract

The invention discloses a rapid domestic fruit and vegetable pesticide residue detection instrument, and relates to the technical field of agriculture product detection. Organophosphorus and carbamate pesticide residues in vegetables and fruits can be detected on site. The instrument consists of a detection panel, a detection instrument body and an enzyme biologic sensor, and further comprises a pocket with a reagent prepared at a certain ratio and an enzyme membrane for fixing acetylcholin esterase. According to the detection principle, on the basis of a cyclic voltammetry method, the concentration of the pesticide is measured by measuring the change of current generated from an electrode which is modified by acetylcholin esterase before and after contacting the pesticide. Weak current signals generated from an enzyme electrode are acquired, amplified and converted through an amplifier, and output to a data processing device, a display and a mini printer are arranged at a data acquisition terminal, whether the pesticide exceeds the standard or not can be displayed, and the result can be printed and output. The instrument is applicable to an occasion for on-site rapid detection on pesticide residues.

Description

technical field [0001] The present invention relates to the technical field related to rapid detection of organophosphorus and carbamate pesticides in fruits and vegetables and the technical field of trace detection; the principle involved is a pesticide residue detector based on the principle of an enzyme sensor, and the biosensor detection method is simple, fast and specific. The advantages of strong sex and the intuitiveness of electronic technology are combined, and it is developed after further research on my country's national conditions and market needs. The purpose is to quickly detect the pesticide residues in the tested samples, which belongs to the category of pesticide detection technology. Background technique [0002] my country is the country that uses the largest amount of pesticides in the world. The actual annual output of pesticides is about 400,000 tons, second only to the United States and ranks second in the world. In addition to symptoms, long-term expos...

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Problems solved by technology

[0010] At present, when using the acetylcholinesterase sensor to detect pesticide residues, the general detection method is to directly transmit the signal output by the acetylcholinesterase sensor to the large-scale electrochemical workstation in the laboratory or detection center, which greatly improves the flexibility of the test and the utilization of time. Therefore, in further research on my country's national conditions and market needs, and in order to provide a new technical means for rapid on-site detection of pesticide residues, it is urgent to research and develop a set of fast and portable detection instruments to meet the needs of ensuring people's food safety and improving people's lives. quality needs

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