We tested the quantity of fluoride in tea leaves by separately using fluorinion selective electrode and the ion chromatographys.
我们分别采用离子色谱法和氟离子选择电极法对茶叶中氟化物的含量进行测定。
2
METHOD: Fluorideion selective electrode assay was adopted.
方法：采用氟离子选择电极法进行测定。
3
Methods Fluorideion (f) -selective electrode method was used to determine fluorin content of capsicum, tea, corn, rice, toothpaste, tap water and mineral water.