Assessing Bottom Sediment Contamination With Heavy Metals in the Klaipėda Port Semi-Closed Bays / Klaipėdos Uosto Pusiau Uždarų Įlankų Dugno Nuosėdų Užterštumo Sunkiaisiais Metalais Vertinimas

Abstract

Journal of Environmental Engineering and Landscape ManagementPublication details, including instructions for authors and subscription information:Abstract. The present paper reports the results obtained by investigation of surface bottom sediment contamination with Cu, Zn, Ni, Pb, Cr, Cd, Hg in three largest semi-closed bays of Klaipėda Port in 2008 and 2009. The concentrations of heavy metals and organic carbon same as the percentages of 6 granular fractions were determined at 41 stations. The contamination level was established by calculating the Nemerov's pollution index. The major factors responsible for sediment contamination with heavy metals and distribution patterns of discrete pollutants and different pollution areas were determined. By comparison of the obtained results with the results of 1998, the changes of sediment contamination with heavy metals in the last ten years were evaluated. It was determined that bottom sediments not contaminated with heavy metals are dominant in the semi-closed bays of Klaipėda port. Heavy contamination with nickel, and moderate contamination with zinc and copper only occur in small areas.

Quaternary Interglacial Sediments as Possible Natural Sources of Arsenic and Molybdenum Anomalies in Stream Sediments in Lithuania

“…It depends on different origin or age of soil parent materials. In Lithuania insufficient attention has been paid to various possible natural sources of anomalies of harmful chemical elements, because the main part of geochemical investigations has been concentrated in urban territories or near, where anthropogenic sources are abundant (Vasarevičius et al 2010;Kumpienė et al 2011;Pundytė et al 2011;Stakėnienė et al 2011;zinkutė et al 2011;Galkus et al 2012). The latter is ~10000 years older and was formed QuaTErnary InTErGlacIal sEdIMEnTs as possIBlE naTural sourcEs of arsEnIc and MolyBdEnuM anoMalIEs In sTrEaM sEdIMEnTs In lITHuanIa Introduction Elevated contents of harmful chemical elements can originate not only from anthropogenic activity, but also from natural sources (Nagajyoti et al 2010).…”

Heavy metal contamination of the Curonian Lagoon bottom sediments (Lithuanian waters area)

“…Higher concentrations of some heavy metals in the lagoon could be due to the fact that mud has been accumulating and degrading in the lagoon for a long time, whereas the harbour is undergoing permanent cleaning and deepening procedures (Galkus et al 2012b). Concentration differences in the different bottom sediments can be seen by comparing the lagoon with the semi-closed bays of the Klaipėda harbour, where high contamination of the surface layer of bottom sediments with heavy metals is mainly predetermined by a short distance from the pollution sources and slow renewal of water (Galkus et al 2012a;Kriaučiūnienė, Gailiušis 2016).…”

“…The distribution and composition of sediments have been the object of investigation by a number of researchers (Gudelis 1959;Pustelnikovas 1983;Gudelis, Pustelnikovas 1983;Gulbinskas 1995;Galkus, Jokšas 1997;Pustelnikovas 1998;Jokšas 1999;Petkus et al 1999;Emelyanov 2002;Trimonis et al 2003;Jokšas et al 2003;Galkus 2004;Emelyanov et al 2015, etc.). The authors of this article already investigated heavy metal contamination of bottom sediments in the Klaipėda strait and in contaminated aquatic areas of the harbour; these studies revealed a direct dependence of sediment contamination level on the distance from the source of pollution and on water circulation peculiarities (Galkus et al 2012a;Galkus et al 2012b). This article describes contamination of the surface (0-3 cm) layer of bottom sediments of the Curonian Lagoon and is a continuation of earlier investigations carried out in the Klaipėda harbour (Galkus et al 2012b).…”