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INFLUENCE OF GRAIN-SIZE DISTRIBUTION OF SEDIMENTS ON THE MOBILITY AND TOXICITY OF HEAVY METALS IN THE COASTAL ZONE OF THE GULF OF FINLAND

Published in «Water: chemistry and ecology» № 1 / 2017 , p. 11-18.
Heading:

 

Polyak Yu.M.
Shigaeva T.D.
Kudryavceva V.A.
Konakov V.G.

Summary:
High anthropogenic pressure on the coastal zone of the Gulf of Finland leads to the accumulation of heavy metals in sediments and higher content of their mobile, bioavailable forms. The maximum content of mobile forms of metals (up to 6.8 μg/g) was found in the monitoring stations located in close proximity to major sea ports (Primorsk, Luga Bay, Lomonosov). Metals mobility is largely dependent on the particle size distribution of sediments. A signifi cant connection between the mobile forms of copper and zinc and content of clay fractions was established. Copper and lead — metals that are the main contributors to the pollution of the bay, have a toxic eff ect on the enzyme activity of sediments. Long anthropogenic interference contributes to the adaptation of the microbial community to heavy metals.

Keywords: enzymatic activity, grain-size distribution, labile metals, sediments

Bibliographic link:
Polyak Yu.M., Shigaeva T.D., Kudryavceva V.A., Konakov V.G. INFLUENCE OF GRAIN-SIZE DISTRIBUTION OF SEDIMENTS ON THE MOBILITY AND TOXICITY OF HEAVY METALS IN THE COASTAL ZONE OF THE GULF OF FINLAND // Water: chemistry and ecology. — 2017. — № 1. — c. 11-18. — http://watchemec.ru/en/article/28310/

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