Atmospheric precipitation (rain-water) as a source of contamination of the Sevastopol coastal waters by detergents and microalgae

Katunina, E.V.; Smirnova, L.L.

Авторы: Katunina E.V., Smirnova L.L.
Сборник: Geographic information technologies and prediction of extreme events
Серия: Collection of articles of the III International Сonference
Год издания: 2015
Место издания: Publishing house SSC RAS Rostov-on-Don
Первая страница: 70
Последняя страница: 79
Аннотация: Sevastopol bays play the main role in the recreational potential of city. And eco-medical condition of the coastal seawaters determined the health of humans. Presently synthetic surface-active substances (detergents) are main organic pollutants of environment. In the marine environment, movement and transformation of detergents lead to increased foaming of sea water and can cause dermatitis in humans. Moreover, mussels Mytilus galloprovincialis, which are cultivated in Sevastopol bays for human food consumption, can accumulate in soft tissues detergents from 0,4 to 1,0 mg / 100g of wet weight. It was noted that rainfalls are one of the ways of detergents supply into seawater. Rain drops passing through the atmosphere dissolve and adsorb some components of aerosols, including detergents, spores and cells of microorganisms. During 2012-2014 we investigated the variations of detergent concentrations in rain-waters and sea surface microlayers of the Kazachya and the Sevastopol Bays. In rain-water samples detergents, pH value, dominant groups of microalgae were determined. Results of research have shown a connection between the level of contamination of rain-water by detergents and its accumulation in sea surface microlayer. Spring and autumn were the seasons of a visible increase in the detergents content in rain-water. The maximum observed was 0,40 – 0,46 mg/l in May. It was noted, that pH values in rain-water varied from 4,2 to 8,6. High pH values (7,8 – 8,2) were observed in rain-water containing some groups of microalgae. There are representatives of Clorophyta (genera Coelastrum, Closterium) and Cyanophyta (genera Synechococcus, Calothrix). The obtained data are useful when modeling ways and mechanisms of marine pollution by detergents.
Добавил в систему: Катунина Елена Викторовна

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Atmospheric precipitation (rain-water) as a source of contamination of the Sevastopol coastal waters by detergents and microalgaeстатья

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