Trace metals (Cu, Mn, Ni, Zn, Fe) Contamination in Marine Sediment and Zooplankton Samples from Izmir Bay. (Aegean Sea, Turkey)

Abstract

Metal (Cu, Mn, Ni, Zn, Fe) concentrations in marine sediment and zooplankton were investigated in Izmir Bay of the Eastern Aegean Sea, Turkey. The study aimed to assess the levels of metal in different environmental compartments of the Izmir Bay. Metal concentrations in the sediment (dry weight) ranged between 4.26-70.8 μg g −1 for Cu, 233-923 μg g −1 for Mn, 14.9-127 μg g −1 for Ni, 25.6-295 μg g −1 for Zn, 12,404-76,899 μg g −1 for Fe and 38,226-91,532 μg g −1 for Al in the Izmir Bay. Maximum metal concentrations in zooplankton were observed during summer season in the inner bay. Significant relationships existed between the concentrations of certain metals (Al, Fe, Mn and Ni) in sediment, suggesting similar sources and/or similar geochemical processes controlling such metals. Higher concentrations of Cu, Zn and percent organic matter contents were found in the middle-inner bays sediments. Based on the correlation matrix obtained for metal data, organic matter was found to be the dominant factor controlling Cu and Zn distributions in the sediment. In general, mean Cu and Zn levels in the bay were above background concentrations in Mediterranean sediments.Zooplankton metal concentrations were similar to sediment distributions.

A case study of trace metals in suspended particulate matter and biota before wastewater treatment plant from the Izmir Bay, Turkey

“…The highest Zn/Fe ratios were calculated at station 24 (in winter) and station 28 (in summer) in the middle-inner bays. Also, similar high-enrichment factors were observed in the inner bay sediments for Zn (Kontas 2008). This was considered to indicate that an important proportion of Zn was delivered from non-crustal (biota and/or pollution).…”

“…A number of studies have been carried out for determination of trace metal concentrations in marine organisms (Demirkurt et al 1990; Kucuksezgin and Balci 1994;Kucuksezgin et al 2002), in sediments (Kucuksezgin 2001;Kontas 2008) and mercury cycling (Kontas 2006) in the Izmir Bay. However, the distribution of trace metals in SPM in the Izmir Bay is poorly investigated.…”

The alteration of vertical distribution of metals in sediment from Flood Canals of Semarang

“…Cu concentration in both sediment cores was comparable with Cu in sediment from Deception Island, Antarctica (42-65 mg/kg) (Brady et al, 2014) and in Santou Bay, China (48.52 mg/kg) (Qiao et al, 2013). The concentration of Ni along the sediment cores from Semarang Flood Canal was lower than sediment from Izmir Bay, Turkey (73.7 mg/kg) (Kontas, 2007). Pb concentration in both cores was relatively lower than sediment from Shandong Peninsula (Yellow Sea) (19-42.2 mg/kg) (Li et al, 2013).…”

The Combined Toxic and Genotoxic Effects of Chromium and Volatile Organic Contaminants to Pseudokirchneriella subcapitata

“…However, taking into account that aquatic organisms are not exposed to a single chemical substance, but rather to mixtures of organic and inorganic chemicals, it is clear that an analysis of the effect of the chemical mixtures is necessary to better define the risk for living organisms and environment (Shehata et al 1999; Barata et al 2006;Kontas 2008). Specifically, the speciation due to the interactions between heavy metals and organic chemicals in natural waters is important in the toxicity to aquatic organisms and for water quality criteria (Burton et al 2002;Kontas 2008). Analyses of chemical mixtures indicate that the toxicity may be equal to the sum of the fractional toxicities of individual components, or higher/lower than the sum due to synergistic/antagonistic interactions (Altenburger et al 2000;Suk and Olden 2005).…”