Distribution of heavy metals in water, particulate matter and sediments of Gediz River (Eastern Aegean) |
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Authors: | F Kucuksezgin E Uluturhan H Batki |
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Institution: | (1) Institute of Marine Sciences & Technology, Dokuz Eylul University, Inciralti, 35340 Izmir, Turkey;(2) Izmir Metropolitan Municipality IZSU, Izmir, Turkey |
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Abstract: | The present paper is the first document of heavy metal levels in surficial sediment, water and particulate matter of the Gediz
River collected from five different sites in August, October 1998, February, June 1999. The present work attempts to establish
the status of distribution and environmental implications of metals in the sediment, water and particulate matter and their
possible sources of derivation. The concentrations of mercury ranged 0.037–0.81, 120–430; lead 0.59–1.5, 190–8,100; copper
0.24–1.6, 30–180; zinc 0.19–2.9, 10–80; manganese 30–170, 20–490; nickel 0.39–9.0, 100–510; iron 1.3–687, 100–6,200 μg/l in
water and particulate matter, respectively. The maximum values in water were generally obtained in summer periods due to industrial
and agricultural activities at Muradiye. The particulate metal concentrations also generally showed increased levels from
the upper Gediz to the mouth of the river. Calculation of metal partition coefficients shows that the relative importance
of the particulate and the water phases varies in response to water hydrochemistry and suspended solid content, but that most
elements achieve a conditional equilibrium in the Gediz River. The metals ranged between Hg: 0.25–0.49, Cr: 59–814, Pb: 38–198,
Cu: 15–148, Zn: 34–196, Mn: 235–1,371, Ni: 35–175, and Fe: 10,629–72,387 mg/kg in sediment. The significant increase of metals
found in Muradiye suggested a pollution effect, related to anthropogenic wastes. Also, relatively high concentrations of Ni
and Mn occurred in sampling site upstream, due to geochemical composition of the sediments. Maximum values of contamination
factor for metals were noticed for sediment of Muradiye. The sampling stations have very high degree of contamination indicating
serious anthropogenic pollution. |
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Keywords: | Heavy metals Water quality Contamination factor Degree of contamination Gediz River |
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