An Evaluation of Vanadium Enrichment in the Eastern Shelf Sediments of the Turkish Black Sea

Year 2017, , 128 - 138, 15.05.2017

Selma Ünlü , Bedri Alpar

https://doi.org/10.30897/ijegeo.312661

Cited By: 1

Abstract

This paper presents an
evaluation of the spatial distribution of vanadium level, its enrichment and
possible sources in the bottom sediment along the shelf of the Turkish Black
Sea. In April 2006, vanadium concentrations were measured along the measurement
profiles (20, 50 and 100 m) using ICP-MS. The vanadium levels ranged from 40 to
315 µg g^-1, usually within the range of typical and background
values (Cf<1), except the one
offshore the Yeşilırmak River (315.2 µg g^-1), revealing significant
riverine inputs and geographical conditions (Cf>3). The concentrations decrease gradually with water depth,
implying the dominance of anthropogenic sources such as industrial wastes,
agricultural effluents, sewage discharge, and port activities. The vanadium
levels had not significant correlations with the physicochemical parameters
(sediment texture, water content, TOC) and TPH level in the sediment. At the
eastern basin, a serious vanadium enrichment (Cf>6-9) was observed in
October 2010, implying some important regional and seasonal contributions;
which may be natural or anthropogenic. Biogeochemical processes,
eutrophication, wave-based erosion, abnormal current circulations, bottom
morphology and influence of other substances in the environment may be other
regulating factors to this enrichment. Continuous monitoring and further
studies are required for a detailed description of vanadium mobility and for
assessment of the main controlling processes associated with vanadium
enrichment in the eastern Black Sea basin.

Keywords

Vanadium, Petroleum Hydrocarbon, Marine Sediment, Contamination Factor, Black Sea

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