Methods Fluoride ion(F)-selective electrode method was used to determine fluorin content of capsicum, tea, corn, rice, toothpaste, tap water and mineral water.

• 方法对该市不同地点抽取的市售辣椒、茶叶、玉米、大米、牙膏、自来水和矿泉水,采用氟离子选择电极法测定氟含量。