Chemistry |
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2001, No. 4
B.A. Anphilophiev, G.B. Senitskaya, A.V. Halikova
ACCELERATION OF OIL'S DESTRUCTION IN SOILS
In the paper the influence of mineral addings containing the remnants of beer production and their mixtures on the regeneration of soil stained by oil is analyzed. It was established that the best refinement of soil is provided for nitro-phosphoric fertilizer nitroammophos. The influence of the concentration on hydrocarbon destruction velocity in soil was studied as well. It is shown that adding of water solution of nytroammophos (ω = 0,03) causes the maximum decrease of the carbon contained in the soil.
I.M. Mukhanova, L.A. Onuchak, V.P. Garkin
In present paper the specific retention volumes are experimentally determined for the nine nonmesogenes: n-hexane, n-heptane, n-octane, heptene-1, octen-1, benzene, meta-xylene, para-xylene, tetrachlormetane. The sorbtion properties of liquid crystalline stationary phase on base of 4-n-hexyloxyphenyl-4-n-decyloxybensoate (I) and 4-n-octyloxy-4-cianobiphenyl (II) (including separation factor α of xylene isomeres) are studied. The mixture of liquid crystals I and II at composition 7:3 has abnormally high separation factor (as compared with individual components). The temperature and concentration dependence of separation factor in different phases of liquid crystalline sorbent are discussed on the base of idea about the character of mix intermolecular interactions in triple systems.
V.M. Yakovlev, V.A. Terentyev
The review of the main results on the application of Lainus Pauling's thermochemical methods of investigation of the chemical bonds is presented. It is shown that electronegativity (EN), i.e. function of the element's coordinates in the periodic table and atom valence state, is the principal character in evaluation of the ionicity degree i and dissociation energy DAB of the heteropolar bonds A-B (avoiding in addition utilisation of an geometric parameters). The procedure of i calculation and additive-multiplicative expression DAB with EN presented as ion multiplier components are defined more precisely.