Trace metal distribution in different chemical fractions of marine sediments along the eastern Aegean shelf

Abstract

The major objective of this study was to carry out sequential chemical extraction for the partitioning of particulate trace metals in sediment samples, collected along the eastern Aegean shelf during cruises July-August 1994, in the framework of a National Marine Measurement and Monitoring Programme for the Aegean Sea.Five metals, Cd, Pb, Cu, Zn and Cr were examined in each of sediment samples. Three chemical fractions of the sediments were separated and concentrations of the trace metals were determined by AAS techniques. The three different leaches used were hydroxylamine hydrochloride-acetic acid, hydrogen peroxide and nitric-perchloric acids.Metals were concentrated mainly in the fraction extracted by nitric-perchloric acids. Lead in the first fraction were found in the sediments of Northern part of Aegean, where the concentration of organic material was high.The total concentrations of Cd, Cu, Zn, Cr were higher in Izmir Bay than the other sampling points. The distribution of Pb concentrations was the highest in Edremit Bay and Izmir Bay.

Distribution of heavy metals in the surficial sediments of Izmir Bay (Turkey)

“…The values in the Outer Bay are similar the mean concentrations of heavy metals in the sediments from the Mediterranean and Aegean Sea [11][12][13][14][15]. The levels of metals are lower in the Inner Bay than polluted areas of Mediterranean Sea [16,17].…”

Heavy metal concentrations in surface sediments from two regions (Saros and Gökova Gulfs) of the Eastern Aegean Sea

“…Several studies have been focused on sedimentology and geochemistry of sediments in the Aegean Sea (Ergin et al 1990;Yemenicioglu et al 1998;Karageorgis et al 1998;Batkı et al 1999;Kucuksezgin 2001;Sarı and Çagatay 2001;Stamatis et al 2002;Karageorgis et al 2005;Dalman et al 2006;Gavriil and Angelidis 2006;Kucuksezgin et al 2006). However, literature about its heavy metal concentrations from the eastern side of the Aegean Sea, along the Turkish coasts is scarce or limited.…”

Recent Applications of Flame Atomic Absorption Spectrometry to Environmental Measurements

“…Batki et al [58] used a three-step sequential extraction procedure to partition the trace metals Cd, Cr, Cu, Pb, and Zn into different chemical fractions. Sediments were collected from the eastern Aegean Sea, Turkey during the period of July and August 1994.…”