[Accumulation of polycyclic arenes in Baltic Sea algae].

The paper presents data on the level of benzo(a)pyrene (BP) and some other polycyclic arenes in alga and phanerogam specimens from different gulfs of the Baltic Sea. Algae were shown to absorb BP from sea water. The mean concentration of BP in sea water was under 0.

[Distribution of various polycyclic aromatic hydrocarbons in reservoir water of Estonia].

The paper presents experimental data on different polycyclic aromatic hydrocarbons (PAH) in water, bottom sediments and algae as well as evidence available in literature on their content in exhausts of automobiles, oil shale industry and power station. Attempts are made to reveal differences in sources of the environment pollution with allowance for different PAH/benzo(a)pyrene percentage ratio, but as the PAH ratios are relatively similar in different pollution sources this attempt was a failure.

[Is benzo(a)pyrene an indicator of carcinogenic pollution?].

High-pressure liquid chromatography was used in the measurement of level of polycyclic aromatic hydrocarbons (PAH) in 60 environmental specimens (water, bottom sediments and soil in fresh- and sea-water basins, solid wastes of fuel combustion). Concentrations of benzo(a)pyrene considered to be an indicator of carcinogenic PAH, varied significantly: 0.05-13.

[Patterns of distribution of benzo(alpha)pyrene in fishes].

The paper presents comparative data on the levels of benzo(a)-pyrene (BP) in the muscular tissue of 326 specimens of various fishes: marine, brackishwater, migratory, semi-migratory and freshwater. The highest level of BP was found in migratory fish. It is probably due to the abundance of fat species among them.

[Benz(a)pyrene accumulation, distribution and excretion in fish].

The data are reported on the level of benz(a)pyrene /BP/ in muscular tissue and various organs of carp, drown trout, seatrout and rainbow-trout. It has been found that the average content of BP in fish was, as a rule, less than 1 mg/kg. The amount of BP in various organs was nearly the same as in the muscular tissue.