Original title: taking photos with mobile phone, detecting pesticide residues in five minutes
Through the wechat small program to take photos, the detection of a variety of chemical pesticide residues can be completed in 5 minutes at the same time. The detection results are directly displayed on the mobile phone, and the detection data can be uploaded and shared in real time. The Chinese Academy of Agricultural Sciences (CAAS) recently announced that the Institute of agricultural quality standards and detection technology of CAAS, the “innovative team for the detection and behavior research of agricultural chemical pollutants residues”, has made this important breakthrough in the rapid detection technology of multiple pesticide residues after years of research and development. The technology can also be applied to the detection of veterinary drug residues, mycotoxins, illegal additives, environmental pollutants, allergen detection, pathogen target screening and diagnosis, such as the interpretation of the results of new coronavirus test paper.
There are more than 500 kinds of chemical pesticides allowed to be used in China, said Wang Jing, chief of the team and professor of Institute of quality standards, Chinese Academy of Agricultural Sciences. For the common pesticides in market monitoring, the team has successfully developed colloidal gold rapid detection test strips for imidacloprid, carbofuran, tebuconazole, acetamiprid, procymidone, chlorpyrifos, carbendazim and other pesticides based on immunochromatographic test strips and artificial intelligence image recognition algorithm, standardized the processing parameters of test strips, and identified each test strip with barcode , developed a multi-channel strip carrying platform for image recognition; developed intelligent strip reading software based on image recognition, which can realize strip image recognition, interception, deviation correction, analysis and result judgment at the same time; on this basis, the team developed wechat application applet, which has been tested, and the main brands of smart phones can be used for colloid The results of gold strip test are semi quantitative, and different light source conditions have little influence. The accuracy of the detection system is basically consistent with that of the professional strip reader, and the whole system can be applied to the actual detection. The detection system software has obtained the national software copyright registration.
(editor in chief: Zhao Chao, LV Qian)