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Functional groups in complex organic molecules

Vibrational spectroscopy is the method of choice for the characterizing functional groups in complex organic molecules. Infrared transmission spectroscopy has been used on dried humics pressed into KBr pellets to determine the relative carboxylate content of humic materials (14-16). However, interferences arise from the presence of water bands and possible alterations of the samples under the high pressures used to form the pellets. Diffuse-reflectance techniques can avoid some of the difficulties associated with the KBr pressed-pellet method (9,17-18). To obtain a spectrum analogous to an absorption spectrum, the data are transformed from reflectance units to Kebulka-Munk (K-M) units. However, K-M units are related to... [Pg.96]

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Complex functions

Functional groups in molecules

Functional groups in organic

Functional molecules

Molecule function

Molecules complex

Molecules functional groups

Molecules in groups

Molecules organization

Organ function

Organic complexation

Organic complexing molecules

Organic functional groups

Organic functionalization

Organic groups

Organic molecules, functional groups

Organization functional

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