title: Mineral phases of metals in industrial sediments of St. Petersburg rivers with extreme pollution
metadata.name: dc.contributor.author
metadata.value: Opekunov, Anatoly Yu.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Janson, Svetlana Yu.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Opekunova, Marina G.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2021-08-20T19:00:29Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2021-08-20T19:00:29Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2021-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Opekunov, A. Yu., Janson, S. Yu., Opekunova, M. G., Kukushkin.S. Yu. (2021). Mineral phases of metals in industrial sediments of St. Petersburg rivers with extreme pollution. Vestnik of Saint Petersburg University. Earth Sciences, 66 (2), 267–288.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2021.205
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/32804
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The aim of the research was to determine the patterns of distribution of metals and their main
  mineral phases in technogenic bottom sediments of St. Petersburg watercourses in conditions
  of extreme pollution. The objects of research were the Yekaterinofka, Okhta, Krasnen'kaya,
  Smolenka, Karpovka and Chernaya Rechka Rivers. Bottom sediments of urbanized rivers
  are characterized by abnormally high concentrations of metals and metalloids (TMM). The
  maximum metal content established in river sediments corresponds to ore concentrations:
  Cu — 0.487 %, Pb — 5.54 %, Co — 0.129 %, Cd — 0.0439 %, Ba — 6.32 % and Zn — 0.818 %.
  According to the Geoaccumulation Index (Igeo), TMMs are characterized from moderate
  and severe pollution (Cr, Co, Ni, Zn, As) to extremely severe (Cu, Cd, Sb, Hg). The rivers
  have their own geochemical specialization of bottom sediments: the Okhta River is characterized
  by the highest concentrations of Ba, As, Sb, Zn and Hg; the Ekaterinofka River —
  Cr, Co, Mn, Pb, Cd; Smolenka River — Cu; Red — Fe, V, Sc; Chernaya Rechka River — Ni.
  Based on the method of the main components of factor analysis, paragenetic associations are identified that indicate the main sources of pollution: the production of batteries using
  Sb-Cd-Pb-Co-Mn (Yekaterinofka River) and Ni (Karpovka River), paints and varnishes using
  Ba-Hg-As-Zn (Okhta River) and metal processing Cu-Cr (Yekaterinofka, Smolenka and Chernaya
  Rechka Rivers). Scanning electron micrographs studies showed a variety of authigenic
  minerals, among which barite, hematite, magnetite, goethite are of primary importance. The
  amount of barite formed is proportional to the concentration of Ba in the sediments. There
  are metal sulfides, framboidal pyrite, sphalerite, chalcopyrite, galena. An important feature of
  early diagenetic changes in the composition of sediments under extreme pollution conditions
  of the studied rivers is shown — the formation of native metals (Fe, Pb) and aggregates of
  complex composition (Fe, Pb, Zn, Cu). This is probably one of the significant mechanisms of
  the flow of metals under conditions of sustainable technogenesis.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This study was supported by the Russian Foundation for Basic Research (Moscow, Russia), grant
  No. 19-05-00508.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Earth Sciences;Volume 66; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: metals and metalloids
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: paragenesis of metals
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: sedimentation rate
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: authigenic minerals
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: mineral aggregates
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Mineral phases of metals in industrial sediments of St. Petersburg rivers with extreme pollution
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 267-288.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/32804/1/267-288.pdf
resources.format: Adobe PDF
resources.size: 7,37 MB