[Analysis of the mutagenic activity of aqueous and buffer extracts from oil-polluted soil samples].

The Ames test on Salmonella typhimurium TA 100 and TA 98 strains were used to study the mutagenic activity of aqueous (pH 7.4) and buffer (pH 4.5) extracts from soil samples containing different oil levels (from 16 to 3526 mg per kg soil), which had been taken from different areas of a town, and buffer extracts from model soil samples added by crude West-Siberian oil (160-15625 mg/kg).

[Hygienic evaluation of the effect of petroleum hydrocarbons on the soils of megapolises].

The paper gives the results of studying the quantity of petroleum hydrocarbons in the Moscow soil, as well as the latter's hygienic evaluation by the changes in acidity (pH) and redox potential and by the sanitary state (the levels of Escherichia coli and viable helminthic eggs). The study has ascertained that the petroleum-polluted soils show changes in medium pH and redox conditions that determine the biological activity of the substances and the trend in their disintegration processes and revealed a relationship of thy sanitary state of Moscow soils to their level of petroleum hydrocarbons.

[Oil pollution of a number of Moscow residential and recreational areas].

The soils of residential areas were studied in different Moscow districts differing in the level of a man-caused load. Oil pollution was estimated by the soil content of oil hydrocarbons. A correlation was established between the levels of hydrocarbons and the sanitary ill-being of the city's soils.

[The environmental-and-hygienic risk of industrial waste and consumption].

How to safely handle production and consumption residues is a relatively recent problem. According to the data of the United Nations Organization, 25 to 33% of the diseases notified in the world are directly related to the poor human environment. In Russia and foreign countries, there has been no list of chemicals so far.

[Topical problems of society's waste handling].

The fact that the volume of waste steadily grows, makes its handling one of the most topical scientific, technical, and socioeconomic problems in the world. The article covers important ecological and hygienic problems of waste handling and the effects of waste of human health.