Author(s)

Y. Koray Kucuk¹, Akasya Topcu^2*

¹Ministry of Transport, Maritime Affairs and Communications, Ankara, Turkey.
²Department of Aquaculture and Fisheries Engineering, Agricultural Faculty, Ankara University, Ankara, Turkey.

A seasonal-spatial distribution and ecological risk assesment of the surface sediment are provided for Trabzon Harbour, located in the Eastern Black Sea Region. Sediments were collected from three stations, one of which was a control station, and a total of nine heavy metals were analyzed. In the sediment samples, concentrations of iron (Fe: 57.972 ± 1.226 − 116.250 ± 0.554 μg⋅g⁻¹ DW), copper (Cu: 5.790 ± 0.250 − 14.770 ± 0.270 μg⋅g⁻¹ DW), cadmium (Cd: 0.070 ± 0.016 − 0.232 ± 0.005 μg⋅g⁻¹ DW), lead (Pb: 55.100 ± 0.540 − 4.652 ± 0.066 μg⋅g⁻¹ DW), chrome (Cr: 9.232 ± 0.046 − 28.640 ± 0.377 μg⋅g⁻¹ DW), zinc (Zn: 4.592 ± 0.300 − 54.322 ± 0.437 μg⋅g⁻¹ DW), arsenic (As: 2.702 ± 0.233 − 6.332 ± 0.186 μg⋅g⁻¹ DW), manganese (Mn: 21.175 ± 0.374 − 41.465 ± 0.410 μg⋅g⁻¹ DW), nickel (Ni: 9.272 ± 0.042 − 54.230 ± 0.158 μg⋅g⁻¹ DW), total phosphorus (TP: 0.160 ± 0.003 − 0.250 ± 0.001 μg⋅g⁻¹ DW), total nitrogen (TN: 0.111 ± 0.001 − 0.161 ± 0.001 μg⋅g⁻¹ DW), organic matter (OM: 0.767 ± 0.010 − 1.750 ± 0,009 μg⋅g⁻¹ DW), total organic carbon (TOC: 1.450 ± 0.001 − 4.407

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