Bulletin of Chinese Academy of Sciences (Chinese Version)


high resolution mass spectrometry (MS); Web-GIS; tri-element integrated technology; pesticide residue; monitor; visualization

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Against the background of big data age, it is important in the research of pesticide residue to find out how to get a huge mass of pesticide residue data and visualize them on the map in real time. After 10 years of in-depth study, a high-throughput high resolution mass spectrometry technique for screening of 1200 pesticide residues by gas chromatography quadrupole time of flight mass spectrometry (GC-QTOF/MS) combined with liquid chromatography quadrupole time of flight mass spectrometry (LC-Q-TOF/MS) was developed based on the accurate database and spectral library of 485 and 525 pesticides by GC-Q-TOF/MS and LC-Q-TOF/MS, respectively. This has improved the detection efficiency of pesticide residue dramatically, and also laid the foundation for obtaining massive pesticide residues detection results accurately and reliably. In this study, a pesticide residue visualization system is established by combining the massive results of pesticide residue with internet and geographic information technology (GIS). The system contains two parts:online cartography system and printed atlas. Online cartography system presents the situations of pesticide residues in China in multi-forms, multi-perspectives, and multi-levels, combining WebGIS technology with applied data statistical analysis methods, and innovatively create a web cartography system integrated using expressions such as thematic maps, statistical charts, and so on. Printed atlas illustrates the multi-dimensional information such as the spatial distribution of pesticide residues, pesticide categories, fruit and vegetable types, residues, toxicities, and excessive situation. At present, the pesticide residue visualization system has been applied to the screening results of pesticide residue of 22, 278 fruit and vegetable samples collected from 638 sampling points in 284 counties within 31 provincial capitals/municipalities across the country from 2012 to 2015. It is turned out that the visualization system based on the tri-element integrated technology could show massive pesticide residue data intuitively in real time. This would be a potential and powerful tool for monitoring the risk of food safety in China. And even more important, this research will provide technical support and basic data for the implementation of the state programs of "Zero Increase of Pesticide Use" and "Boosting the Construction of Healthy China" in 13th Five-Year Plan.

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Bulletin of Chinese Academy of Sciences


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