Method for testing content of fluorine ions

The invention discloses a method for testing the content of fluorine ions, and relates to the technical field of fluorine ion detection.The method comprises the steps that firstly, a fluorine ion standard solution is prepared, and a standard working curve is drawn; carrying out microwave digestion on the to-be-detected sample and measuring a potential value; and comparing the standard working curve with the measured potential value to determine the concentration logarithm value of the fluorine ions in the solution, and further calculating the content of the fluorine ions. According to the method, the sample is subjected to sealed microwave digestion, so that fluorine ions in the sample are completely dissolved out without loss; the uniformity of the solution can be ensured by keeping a magnetic stirring state during testing, and the detection rate of a sample is improved; the sample is pretreated through microwave digestion sectional heating, operation is easy and safe, digestion is thorough, and it is avoide