Education in analytical chemistry in the U.S.S.R.

Analytical Chemistry is taught at over 600 schools of higher education in the U.S.S.R. Contents of general and special courses are described in this article. The main problems and objectives of education at universities are mentioned.     

Solvent effects in u.v. absorption spectra. I. Phenol in cyclohexane ethanol mixtures

The u.v. and i.r. absorption spectra of phenol in a series of solvent systems have been studied and the changes in the spectra, particularly the loss of fine structure in the u.v. spectra, have been qualitatively interpreted in terms of hydrogen bonding effects. The systems studied were chosen to favour either self bonding of the phenol or bonding between the phenol and the minor component of the solvent system. In the latter case the solvent systems were such that the phenol could act either as a proton donor (with an aliphatic ether) or as a donor and acceptor (with ethanol).     

Zur Polemik Prof. Dr. Georg Wiegner's in Zürich mit Prof. Dr. R. Gans in Berlin

Ohne Zusammenfassung     

Elektroosmose in Mehrschichtendiaphragmen 1. Mitt.

Ohne Zusammenfassung     

Stickoxid in Gasgemischen, z. B. in Dieselauspuffgasen

Ohne Zusammenfassung     

Proton N.M.R. lineshape in nematic microdroplets

The dependence of the proton N.M.R. absorption spectrum on nematic director configuration and molecular self-diffusion in nematic submicrondroplets is analysed. The lineshape is evaluated numerically for radial and bipolar director configuration. The motional averaging is taken into account by means of a numerical simulation of the molecular diffusion which induces slow molecular reorientations due to non-uniform orientational ordering in the droplet. This diffusion process strongly affects the absorption spectra of the radial configuration, whereas spectra of the bipolar configuration are only slightly influenced. The possibility of determinating the submicrometre nematic droplet structures using the proton N.M.R. lineshape is discussed.