1H NMR. The 1H NMR spectra were recorded on a Varian
300 Plus spectrometer operating at 299,862 MHz. Each oil
sample, weighing 0.2 g, was mixed with 400 μL of deuterated
chloroform and a small proportion of tetramethylsilane
as internal reference; this mixture was introduced into a 5-
mm-diameter tube. The acquisition parameters were: spectral
width, 5000 Hz; relaxation delay, 3 s; number of scans, 32;
acquisition time, 3.744 s; and pulse width, 90°, with a total
acquisition time of 3.37 min. The experiment was carried out
at 25°C. Signals assignments were done as in previous studies
(22). The area of the signals was determined by using the
equipment software, and integrations were done three times
to obtain average values.
1H NMR. The 1H NMR spectra were recorded on a Varian300 Plus spectrometer operating at 299,862 MHz. Each oilsample, weighing 0.2 g, was mixed with 400 μL of deuteratedchloroform and a small proportion of tetramethylsilaneas internal reference; this mixture was introduced into a 5-mm-diameter tube. The acquisition parameters were: spectralwidth, 5000 Hz; relaxation delay, 3 s; number of scans, 32;acquisition time, 3.744 s; and pulse width, 90°, with a totalacquisition time of 3.37 min. The experiment was carried outat 25°C. Signals assignments were done as in previous studies(22). The area of the signals was determined by using theequipment software, and integrations were done three timesto obtain average values.
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