NMR: Difference between revisions
From Pumping Station One
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** Y-Axis is intensity. Simple enough. The taller a peak, the more of something there is. If you take the area underneath a peak and add it up (integrate it), you can now say something about how much of something exists and begin to quantify it. | ** Y-Axis is intensity. Simple enough. The taller a peak, the more of something there is. If you take the area underneath a peak and add it up (integrate it), you can now say something about how much of something exists and begin to quantify it. | ||
** X-Axis has quirks: | ** X-Axis has quirks: | ||
*** It technically represents the amount the frequency of whatever is being analyzed is shifted from the signal from TMS | *** It technically represents the amount the frequency of whatever is being analyzed is shifted from the signal from [https://en.wikipedia.org/wiki/Tetramethylsilane Tetramethylsilane]. TMS is a commonly used for calibration and whose single peak is defined to be 0ppm. | ||
*** Also, 0 starts from the right side. Higher frequencies are to the left 0 on the X-Axis (Historical Quirks) | *** Also, 0 starts from the right side. Higher frequencies are to the left 0 on the X-Axis (Historical Quirks) | ||
*** Technically, we are measuring how many Hertz higher something is than where the signal for TMS is. | *** Technically, we are measuring how many Hertz higher something is than where the signal for TMS is. | ||
