заплесневелый
Содержание водорода Измерение методом ЯМР
Содержание водорода Measuring
Измерение содержание водорода топлива является важным параметром, который может предоставить полезную информацию о композиции топлива, качество, и производительность.
NMR spectroscopy provides relative quantitative information, and the accuracy of the содержание водорода determination depends on the accuracy of the calibration and the consistency of the experimental conditions. To determine the содержание водорода in a sample using NMR spectroscopy, you can follow these general steps:
Prepare the sample: Ensure that your sample is properly prepared and dissolved in a suitable deuterated solvent to avoid interference from the solvent signal.
Acquire the proton NMR spectrum: Place the sample in the NMR spectrometer and acquire the proton NMR spectrum. This spectrum will display peaks corresponding to the different hydrogen environments in your sample.
Analyze the integration values: After acquiring the spectrum, you need to analyze the integration values of the proton peaks. Integration measures the area under each peak and provides information about the relative number of hydrogen atoms contributing to each peak.
Determine the reference compound: To calculate the absolute содержание водорода in your sample, you need a reference compound with a known содержание водорода. The reference compound should have similar properties and behavior to your sample.
Калибровка: Using the reference compound, establish a calibration curve or equation that relates the integration values of the reference compound to its known содержание водорода. This calibration curve will allow you to convert the integration values of your sample to absolute содержание водорода.
Quantification: Apply the calibration curve to the integration values obtained from your sample to calculate its содержание водорода. This can be done by interpolation or using the equation derived from the calibration curve.
It’s important to note that the calibration curve should be established under similar experimental conditions to those used for your sample. Кроме того, factors such as the relaxation properties of the sample and the presence of impurities can influence the NMR signals and may require additional considerations during the analysis.
Содержание водорода Measuring by Low Field NMR
Низкий поля ядерного магнитного резонанса (ЯМР) анализ может быть использован для определения содержание водорода. В анализе с низким полем ЯМР, Образец помещается в магнитное поле и радиочастоту (РФ) энергия применяется к образцу. Ядра в образце поглощают РЧ -энергию, а затем высвобождают ее на характерной частоте. Эта частота зависит от свойств образца, включая количество атомов водорода.
