Metal concentrations in water, sediment and three fish species from the Danube River, Serbia: a cause for environmental concern
2016
Ivanović, Jelena | Janjić, Jelena | Baltić, Milan | Milanov, Raša | Bošković, Marija | Marković, Radmila V. | Glamočlija, Nataša
The aim of this study was to investigate the presence of metal contamination in water, sediments and three different fish species. All samples were taken from the Danube River in Belgrade Region, a location upstream from Grocka. Concentrations of Cd, Hg and Pb in water samples were not detected, while concentrations of Zn, Fe, Cu and As were in the range of 0.004–0.41 mg L⁻¹. Iron was the most deposited metal in sediment samples (17,530.00 mg kg⁻¹). For the purpose of heavy metal determination in fish tissue, silver carp, common carp and wels catfish were collected. Concentrations of Pb, Cd and As were determined in muscle, digestive tract and liver by inductively coupled plasma-optical emission spectrophotometry (IPC-OES). The highest concentration of Pb was in the digestive tract of all three fish species, while Cd was mostly deposited in the liver. The highest concentration of Hg was in the muscle tissue of wels catfish, and these values are above the maximum residual levels prescribed by the European Union and the maximum allowed concentrations (MACs) for Serbia. Concentration of As was mostly deposited in the liver, but under the MAC.
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