氟离子选择性电极测定地下水和自来水中微量的氟

The Determination of Trace Fluorine in Tap Water and Groundwater with Fluorine Ion Selective Electrode

利用氟离子选择性电极,通过工作曲线法分别对本地区地下水和自来水中微量的氟进行测定。测得本地区地下水中、自来水中氟离子含量分别为0.14 mg/L、0.12 mg/L。讨论了TISAB缓冲液及搅拌机响应时间对测定结果的影响。该法操作简单,方法可靠。

In the experiment, the working curve method is used to determine the fluoric content of the groundwater and running water by the fluorin ion selective electrode. The corresponding experimental results： the fluorin ion content of groundwater is 0.14 mg/L, and the fluorine ion content in the running water are 0.12 mg/L; the average recovery of standard addition is 91.29 %-99.99 %. And in the present paper the determination influences including different electrodes, TISAB buffer and mixer response time are discussed. And the operation of the method is simple and reliable.