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在pH5.0～5．5的TZSAB体系中，以氟离子选择性电极测定茶叶中氟，具有准确性、简便、快速、选择性好等优点，可用于茶叶中氟的定量测定。检测下限为0．02μg／ml，线性范围为0．02μg～190μg／ml。
In the TZSAB system with pH5.0 ~ 5.5, the determination of fluoride in tea by fluoride ion selective electrode has the advantages of accuracy, simplicity, rapidity, good selectivity and the like, and can be used for the quantitative determination of fluorine in tea. The detection limit was 0.02μg / ml, the linear range was 0.02μg ~ 190μg / ml.