Method for detecting methyl methane sulfonate by gas chromatography and tandem mass spectrometry
A technology of methyl methanesulfonate and gas chromatography, which is applied in the field of detecting methyl methanesulfonate by gas chromatography-tandem mass spectrometry, can solve the problems of difficulty in meeting detection requirements, strong matrix interference, complicated processing, etc. The effect of lower detection limit and high sensitivity
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Embodiment 1
[0041] A kind of gas chromatography-tandem mass spectrometry method of the present invention detects methyl methanesulfonate, comprises the steps:
[0042] (1) Add acetonitrile to constant volume to 10ml, vortex and mix for 1min, ultrasonically extract for 10min, pass through a 0.22μm filter membrane, inject sample to determine methyl methanesulfonate in the sample;
[0043] (2) Detection conditions: Gas chromatography-tandem mass spectrometry GC-MS / MS was used as a detection instrument to determine methyl methanesulfonate.
[0044]In step (1), take 0.05 g of the sample to be tested, accurate to 0.1 mg, put it in an empty volumetric flask, add acetonitrile to dilute to 10 ml, vortex mix for 1 min, and ultrasonically extract for 10 min.
[0045] In step (2), the data acquisition method of the gas chromatography-tandem mass spectrometer is multiple reaction monitoring MRM, and the mass-to-charge ratio M / Z=79→65 is selected as the quantitative ion pair; M / Z=80→65, M / Z=79→48, M / ...
Embodiment 2
[0071] The difference between embodiment 2 and embodiment 1 is: in step (1), add acetonitrile to settle to 15ml, vortex mix 4min, ultrasonic extraction 13min, cross 0.22μm filter membrane, inject sample to methyl methanesulfonate in the sample Determination: Take 0.30 g of the product to be tested, accurate to 0.1 mg, put it in an empty volumetric flask, add acetonitrile to dilute to 15 ml, vortex mix for 4 min, and ultrasonically extract for 13 min.
Embodiment 3
[0073] The difference between embodiment 3 and embodiment 1 is: in step (1), add acetonitrile to settle to 25ml, vortex mix 5min, ultrasonic extraction 15min, cross 0.22μm filter membrane, inject sample to the methyl methanesulfonate in the sample Determination: Take 0.50 g of the product to be tested, accurate to 0.1 mg, put it in an empty volumetric flask, add acetonitrile to make up to 25 ml, vortex mix for 5 min, and ultrasonically extract for 15 min.
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