Method for measuring content of maleic acid by using nuclear magnetic resonance
The invention relates to a method for measuring content of maleic acid by using nuclear magnetic resonance, mainly aiming at solving the technical problem of long time consumption of high performanceliquid chromatography. The method for measuring the content of the maleic acid by using nuclear magne...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a method for measuring content of maleic acid by using nuclear magnetic resonance, mainly aiming at solving the technical problem of long time consumption of high performanceliquid chromatography. The method for measuring the content of the maleic acid by using nuclear magnetic resonance is characterized by comprising the following steps: firstly, preparing a deuterated dimethyl sulfoxide (DMSO) solution of maleic acid and dimethyl terephthalate with a molar concentration of 1 to 1, carrying out ultrasonic treatment on the deuterated DMSO solution, and then enabling the solution to enter a nuclear magnetic resonance spectrometer; carrying out spectrogram detection, then carrying out Fourier transformation and phase adjustment, and carrying out calibration and integration on a spectral diagram to obtain an integral number Au of the maleic acid; calculating according to a formula WT%=(Wu*ns*Au*Mu)/(Ws*nu*As*Ms) so as to obtain the content of the maleic acid.
本发明涉及种利用核磁共振测定马来酸含量的方法。主要解决高 |
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