论文信息 - Quantitative determination of carboxylic acids and their salts and anhydrides in asphalts by selective chemical reactions and differential infrared spectrometry

Quantitative determination of carboxylic acids and their salts and anhydrides in asphalts by selective chemical reactions and differential infrared spectrometry

A method for determining the concentration of carboxylic acids and anhydrides in asphalts and asphalt fractions has been developed. In addition, carboxylate salts are determined independently from the free acids. The method is based on the selective interaction of triphenyltin hydroxide with free carboxylic acids, the hydrolysis of acids and anhydrides with sodium hydroxide, and the silylation of free acids and their salts. Differential spectra are used to make the quantitative determinations.

J. C. Petersen | Henry. Plancher | H. Plancher | J. Claine Petersen

[1] J. C. Petersen,et al. Molecular interactions of asphalt. Infrared study of the hydrogen-bonding basicity of asphalt , 1974 .

[2] J. C. Petersen. Quantitative method using differential infrared spectrometry for the determination of compound types absorbing in the carbonyl region in asphalts , 1975 .

[3] K. Nakamura,et al. Wavelength-modulated derivative spectrometer capable of an automatic analyser of environmental air pollutants , 1981 .

[4] J. C. Petersen,et al. Direct evidence of ketones in oxidized asphalts , 1974 .

[5] R. Jones,et al. The Intensities of Carbonyl Bands in the Infrared Spectra of Steroids1 , 1952 .

[6] R. Anderson,et al. Theory of the Derivative Spectrometer , 1970 .

[7] P. Brovetto,et al. Principles of Self-Modulating Derivative Optical Spectroscopy , 1964 .

[8] J. C. Petersen,et al. Identification of dicarboxylic anhydrides in oxidized asphalts , 1975 .