TEST MODEL FOR THE ASSESSMENT OF CUMULATIVE TOXICITY OF SOIL CONTAMINATED WITH SALTS OF ZINC
Abstract
The integral toxic effect of zinc nitrate on the quantitative population-based test model was evaluated. In the model experiment, a biomarker and a bioindicator for evaluating the biological effect of the contaminant are substantiated. It was shown that zinc salts in the studied concentration range inhibited the dehydrogenase activity of test cultures, while the dependence was negative with a strong correlation. The toxic effect of zinc nitrate led to an increase in the lag-phase test cultures population duration in the periodic system, with a strong positive correlation. The coefficients of determination of these parameters were the highest for the test model of Rhodococcus sp. СG 4, which confirms the adequacy of the test model, which can be used to predict the content of zinc in the soil by changing bioindikators and biomarkers.
About the Authors
N. V. Dudchik
Scientific and Practical Center of Hygiene, Minsk
Belarus
Belarus
D. Sc. (Biol.), Assistant Professor, Head of the Laboratory
8, Akademicheskaya Str., 220012
S. I. Sychik
Scientific and Practical Center of Hygiene, Minsk
Belarus
Belarus
Ph. D. (Med.), Assistant Professor, Director
8, Akademicheskaya Str., 220012
O. A. Emeliyanova
Scientific and Practical Center of Hygiene, Minsk
Belarus
Belarus
Ph. D. (Biol.), Senior researcher
8, Akademicheskaya Str., 220012
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