Metals and metalloids in Antarctic krill and water in deep Weddell Sea areas

Mar Pollut Bull. 2022 May;178:113624. doi: 10.1016/j.marpolbul.2022.113624. Epub 2022 Apr 6.

Abstract

The study on the concentration of trace elements in Antarctic krill and in water in the deep areas of the Atlantic sector of the Antarctic was performed. Concentrations of 22 trace elements were studied to determine their spatial distribution in krill, and to assess the accumulation ability of the krill against 8 of them. The trace elements concentration in krill diminished in the following order: Fe > Cu > Zn > Bа > B > Se > As > Cr > Ni > Ag > Li > Mn > V > Mo > Cd > Co > Hg > Be. Concentrations of Pb, Ti, Tl, Sb were below their detection limits. Concentration factors of trace elements by krill varied from n × 102 to n × 104. The Cu and As concentrations in dry krill exceeded their MPC. Concentrations of all trace elements in wet mass of krill were not exceeded established regulative values.

Keywords: Accumulation ability; Antarctic krill Euphausia superba; Atlantic sector of the Antarctic; Maximum permissible concentrations; Metals and metalloids; Water environment.

MeSH terms

  • Animals
  • Euphausiacea*
  • Metalloids*
  • Metals
  • Trace Elements* / analysis
  • Water

Substances

  • Metalloids
  • Metals
  • Trace Elements
  • Water