防龋健齿口胶中微量氟的测定

Determination of Micro Fluorine in the Chewing-Gum for Preventing Decayed Tooth

采用氧瓶燃烧法．利用氟离子选择电极测定了茶叶及防龋健齿口腔中氟离子的含量，并做了回收率实验，实验证明，本法准确度高．回收率好，简便易行。

A potentiometric determination of micro fluorine in tea and chewing-gum for preventingdecayed tooth by oxygen flask combustion method and fluorine ion selective electrode is re-ported- The result shows that this method is simple, rapid and accurate, and the average re-covery is 99. O%.