Method for detecting content of sulfur dioxide in sulfur hexafluoride gas
A technology of sulfur hexafluoride gas and sulfur dioxide, which is used in measuring devices, instruments, scientific instruments, etc., can solve the problems of undetectable, low component content, undetectable chromatographic peaks, etc., to increase accuracy and improve content , the effect of increasing the injection concentration
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[0022] Example 1
[0023] A method for detecting the content of sulfur dioxide in sulfur hexafluoride gas, including the following steps:
[0024] (1) Using sulfur hexafluoride gas containing 1μL / L sulfur dioxide as a gas sample, the gas sample is injected through the gas concentrator three-stage refrigeration concentration injection, the three-stage refrigeration concentration injection includes the following steps: 1) The gas sample passes through the second The first-stage refrigeration, the first-stage refrigeration conditions are: the cooling and trapping temperature of module M1 is -50℃, and then the M1 module is heated to 8℃, so that the sample is desorbed and transferred to module M2; 2) The gas sample undergoes the second-stage refrigeration, The second-stage refrigeration conditions are: the cooling and adsorption temperature of module M2 is -60°C, and the desorption temperature is 210°C; 3) The gas sample undergoes the third-stage refrigeration, and the third-stage refri...
Example Embodiment
[0031] Example 2
[0032] A method for detecting the content of sulfur dioxide in sulfur hexafluoride gas, including the following steps:
[0033] (1) Using sulfur hexafluoride gas containing 1μL / L sulfur dioxide as a gas sample, the gas sample is injected through the gas concentrator three-stage refrigeration concentration injection, the three-stage refrigeration concentration injection includes the following steps: 1) The gas sample passes through the second First-stage refrigeration, the first-stage refrigeration conditions are: module M1 cooling and trapping temperature is -30℃, and then M1 module is heated to 12℃, so that the sample is desorbed and transferred to module M2; 2) The gas sample undergoes the second-stage refrigeration, The second-stage refrigeration conditions are: the cooling and adsorption temperature of module M2 is -40℃, and the desorption temperature is 230℃; 3) The gas sample undergoes the third-stage refrigeration, and the third-stage refrigeration conditi...
Example Embodiment
[0040] Example 3
[0041] A method for detecting the content of sulfur dioxide in sulfur hexafluoride gas, including the following steps:
[0042] (1) Using sulfur hexafluoride gas containing 1μL / L sulfur dioxide as a gas sample, the gas sample is injected through the gas concentrator three-stage refrigeration concentration injection, the three-stage refrigeration concentration injection includes the following steps: 1) The gas sample passes through the second The first-stage refrigeration, the first-stage refrigeration conditions are: module M1 cooling and trapping temperature is -40℃, and then M1 module is heated to 10℃, so that the sample is desorbed and transferred to module M2; 2) The gas sample undergoes the second-stage refrigeration, The second-stage refrigeration conditions are: module M2 has a cooling adsorption temperature of -50°C, and a desorption temperature of 220°C; 3) The gas sample undergoes the third-stage refrigeration, and the third-stage refrigeration conditio...
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