Tea is rich in a variety of trace elements. In addition to essential elements such as zinc, selenium, manganese, etc., it also contains harmful elements such as lead, arsenic, mercury, etc. that are harmful to health. At present, the pretreatment methods used for the determination of elements in tea have the disadvantages of tedious operation, loss of elements by dry method and easy splashing by wet method. At the same time, the amount of samples processed is small and the process is not easy to control. Some new trace element analysis methods developed in recent years require simple and reasonable digestion treatment methods, and use the electric digestion apparatus produced by labtech company for tea digestion, with satisfactory results.
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