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A new method to detect pesticide residues in tea

A rapid and effective SERS detection method is proposed by the team led by Prof. Ni Dejiang from the Department of Tea Science in HZAU. Collaborating with China Jiliang University, they provide a method for qualitative and quantitative testing of organochlorine pesticides to improve the safety of tea and to reduce the risks of tea for consumers. The relevant research results will be published in Journal of Hazardous Materials, a leading international journal.
Tea is a popular drink whose safety attracts wide attention. The pesticide residue in tea is not only the most sensitive safety indicator, but also the most stringent risk control item. At present, the traditional detection methods are complex, time-consuming and of high-cost. Therefore, efficient risk-control measures are needed in the tea garden.
Recently, the team, based on nanomaterial and spectroscopy technology, develop a new technology which includes special nanomaterial preparation and fingerprint spectrum algorithm. Further studies on sampling and comparing the drug usage show that the technology can effectively detect the targeted pesticide residues. Compared with the other methods, it has a great application prospect. The team plans to further integrate the new technology with related light equipment to better serve the food safety of the horticultural industry.

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