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13C CPMAS NMR spectroscopy as a versatile and quantitative tool for determination of mercury adsorption capacity in

Hsien-Ming Kao1, Lung-Ping Lee, Arudra Palani

  • 1Department of Chemistry, National Central University, Chung-Li, Taiwan 32054, ROC. hmkao@cc.ncu.edu.tw

Analytical Chemistry
|March 15, 2008
PubMed

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NMR Spectroscopy: Chemical Shift Overview01:15

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The position of the absorption signal of a sample is reported relative to the position of the signal of tetramethylsilane (TMS), which is added as an internal reference while recording spectra. The difference between the absorption frequencies of the sample and TMS (in Hz) is divided by the spectrometer operating frequency (in MHz) to obtain a dimensionless quantity called the chemical shift. It is reported on the δ (delta) scale and expressed in parts per million.
For instance, the proton...