| abstract |
The invention discloses a method for detecting carbon tetrafluoride in a column circuit breaker for a 1100kV filter, comprising the following steps: 1) taking the gas in the column circuit breaker for a 1100kV filter as a sample to be tested; In the quadrupole time-of-flight tandem mass spectrometer, obtain the peak area of CF in the sample to be tested in the ion chromatogram; 2) according to the chromatographic analysis external standard method, step 1 ) obtains the peak area and CF 4 of the standard substance Comparing the standard curves, the content of CF 4 in the measured 1100kV filter post circuit breaker is obtained. This method has strong pertinence and high sensitivity, and is suitable for the detection of CF 4 content in column circuit breakers for 1100kV filters, and the lower limit of quantification is 0.13 μL/L. |