Application of tannic acid in calibration solution for electrospray ionization mass spectrum analysis
A technique of electrospray ionization and mass spectrometry, applied in the field of analytical chemistry mass spectrometry, can solve problems such as damage to the mass spectrometer detector, shorten the service life of the mass spectrometer, etc., and achieve the effects of simple preparation and accurate mass calibration
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Embodiment 1
[0022] The solvent used for the sodium formate calibration solution in embodiment 1 is: to V 异丙醇 :V 水 =The mixed solvent formed after adding anhydrous formic acid to the solvent of 1:1, the formic acid content in this mixed solvent is 0.2v / v%;
[0023] N-benzylhexadecanamide was purchased from Wuhan Huashite Industrial Biotechnology Development Co., Ltd., analytically pure. β-cyclodextrin was purchased from Sigma Aldrich, analytically pure. Mono-[6-(diethylenetriamine)-6-deoxy]-β-cyclodextrin was purchased from Shandong Binzhou Zhiyuan Biotechnology Co., Ltd.
[0024] The solvents used for N-benzylhexadecanamide solution, β-cyclodextrin solution and mono-[6-(diethylenetriamine)-6-deoxy]-β-cyclodextrin solution are: 乙醇 :V 水 =The mixed solvent formed after adding anhydrous formic acid to the solvent of 1:1, the formic acid content in this mixed solvent is 0.05v / v%.
[0025] The mass spectrometry conditions when using electrospray ionization mass spectrometry in Examples 1 a...
Embodiment 2
[0032] Example 2 Carry out electrospray ionization mass spectrometry analysis with tannic acid ethanol solution as calibration solution
[0033] In view of the advantages of the mass spectrogram of tannic acid obtained by positive ion scanning mass spectrometry in Example 1, the ethanol solution of tannic acid prepared in Example 1 was used as a calibration solution, and the concentration was analyzed by electrospray ionization mass spectrometry in positive ion mode. 1.0×10 -3 mol L -1 N-benzylhexadecanamide solution, the concentration is 1.0×10 -3 mol L -1 β-cyclodextrin solution and concentration of 1.0 x 10 -3 mol L -1 Mono-[6-(diethylenetriamine)-6-deoxy]--β-cyclodextrin solution. As a control, the above-mentioned N-benzylhexadecanamide solution, β-cyclodextrin solution and mono-[6-(diethylenetriamine)-6-deoxygenate were analyzed with the sodium formate calibration solution in Example 1. ]-β--cyclodextrin solution, the result is as Figure 2-4 shown.
[0034] Respe...
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