Propionic Acid Nuclear Magnetic Resonance (NMR) Spectroscopy
Use a nuclear magnetic resonance spectrometer for propionic acid detection. Taking the analysis of propionic acid structure in chemical synthesis products as an example, first prepare the sample into a solution of appropriate concentration, typically using deuterated reagents such as deuterated chloroform to avoid interference from the solvent peak on the sample peak. Place the NMR tube containing the sample solution into the probe of the NMR spectrometer. The instrument emits radiofrequency pulses to induce nuclear energy level transitions in the atoms of the sample molecules. Nuclei in different chemical environments absorb and emit radiofrequency signals differently, resulting in distinct peaks in the NMR spectrum. By analyzing the chemical environment of each hydrogen atom in the propionic acid molecule, along with information such as peak position (chemical shift) and peak splitting (coupling constant), the structure of propionic acid can be confirmed. Quantitative analysis of its content can also be performed to a certain extent. However, NMR spectroscopy is generally less precise for quantitative analysis compared to other methods, but it offers unique advantages for structural analysis.
Shandong Pulisi Chemical Propionic Acid info@pulisichem.cn
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Post time: May-12-2026