Environmental Risk for the Freshwater Ecosystem of the Yenisei River with Consequences for Human Health Risks
Journal Title: Grassroots Journal of Natural Resources - Year 2018, Vol 1, Issue 2
Abstract
The long-term monitoring of the state of the freshwater ecosystem of the River Yenisei revealed the statistically reliable content of heavy metals (Fe, Zn, Cd, Cu, U, etc.) in the water, bottom sediments, phyto- and zoo-plankton, and muscle mass of commercial fish (benthos eaters, predators and herbivorous fish) consuming different types of food. The values of the indices of the ecological state of the Yenisei River were estimated to vary from 2.38 to 2.85. The total index of risk for the water, considering the reference doses, amounts to 0.16 for the water, and to 0.47 for the flesh of commercial fish. The total index of risk for the population consuming freshwater and fish from the Yenisei River amounts to IR=0.63. The obtained value of the index is, in general, of no danger for the population health. Though the carcinogenic substances were not accurately revealed, non-carcinogenic substances were estimated to the level of non-threshold risks. The non-threshold risks of non-carcinogenic substances was found 0.017, far lower than permissible limit 0.050. The ratio of reflectory-olfactory effects and total non-carcinogenic risk was found, respectively, 0.01 and 0.34. The integrated indictor was 0.35, which did not exceed the regulatory level (II≤1). Conclusively, the risks associated to various analyzed indicators did not exceed the permissible levels and did not require additional measures of monitoring the water quality.
Authors and Affiliations
Serhii Lydia Bondareva, Natalya Fedorova, Hasrat Arjjumend
Keywords
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- EP ID EP692542
- DOI https://doi.org/10.33002/nr2581.6853.01023
- Views 173
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