A recent history of metal accumulation in the sediments of Rijeka harbor, Adriatic Sea, Croatia

Cukrov, Neven; Frančišković-Bilinski, Stanislav; Hlača, Bojan; Barišić, Delko

doi:10.1016/j.marpolbul.2010.08.020

Cited by 100 publications

(61 citation statements)

References 24 publications

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“…To gauge the degree of contamination and to distinguish natural and anthropogenic inputs, EFs, I geo , E i , and RI are computed (Cukrov et al 2011;Hakanson 1980;Muller 1969). EFs are calculated (Cukrov et al 2011;Iqbal and Shah 2011;Luoma and Rainbow 2008;Tessier et al 2011) by comparing the measured metal levels to the preindustrial levels (Lide 2005).…”

Section: Pollutant Indicators and Risk Assessmentmentioning

confidence: 99%

“…EFs are calculated (Cukrov et al 2011;Iqbal and Shah 2011;Luoma and Rainbow 2008;Tessier et al 2011) by comparing the measured metal levels to the preindustrial levels (Lide 2005). In order to avoid the overestimation or underestimation of the enrichment; geochemical normalization based on the concentration of a conservative element is commonly employed.…”

Section: Pollutant Indicators and Risk Assessmentmentioning

confidence: 99%

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Occurrence, risk assessment, and source apportionment of heavy metals in surface sediments from Khanpur Lake, Pakistan

Iqbal

Shah

2014

J Anal Sci Technol

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Background: The present study was carried out to assess the seasonal variations, source apportionment, and risk assessment of heavy metals (Cd, Cr, Cu, Fe, Mn, Pb, and Zn) in the surface sediments from the Khanpur Lake, Pakistan. Methods: Composite samples are collected and processed to measure the concentrations of heavy metals in Ca(NO 3 ) 2 extract and acid extract of the sediments using flame atomic absorption spectrophotometry.

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Section: Pollutant Indicators and Risk Assessmentmentioning

confidence: 99%

Section: Pollutant Indicators and Risk Assessmentmentioning

confidence: 99%

Occurrence, risk assessment, and source apportionment of heavy metals in surface sediments from Khanpur Lake, Pakistan

Iqbal

Shah

2014

J Anal Sci Technol

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“…Recently, a study on evaluating of metal pollution in sediments of Rijeka harbor was performed by Cukrov et al (2011). One of their sampling stations was located near our sampling stations RI-01-RI-03, so they could be compared.…”

Section: Resultsmentioning

confidence: 99%

Rječina River sediments (Croatia): from captured spring to polluted prodelta

Frančišković-Bilinski

Juračić

Tibljaš

2011

Environ Earth Sci

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Surface sediments (fraction \63 lm) from the source to the mouth of the Rječina, short (18.3 km) karst allogenic river in Croatia, which is an important source of drinking water, were studied to investigate their mineral (by XRD) and chemical (by ICP-MS) composition to check possible anthropogenic influence at the lower course due to paper industry and mills, and in the prodelta area from untreated municipal sewage and the large harbor of Rijeka town. In all analyzed sediment samples and in the sandstone source, rock quartz is a major mineral, while feldspar and mica group minerals are less abundant. Chlorite is a minor or trace mineral in all samples. Calcite and dolomite are abundant in the river prodelta, reflecting changes in bedrock lithology from flysch to carbonates. In river sediments, Fe is the most abundantly analyzed element, while Ca is the most abundant in prodelta sediments. Concentrations of Al, Mn, Ni, Cr, Co, La and Nd decrease downstream, while Mg, S, Na, B, Pb, Zn, As, Sn, U, Mo, Hg and Ag have relatively higher concentration in prodelta sediments. The results are compared with sediments of other rivers in the area: Raša, Rižana and Dragonja, as well as with those of the Rosandra Creek (Italy). Sediments in the Raša River showed similar behavior as those in the Rječina, as the highest concentration of metals was found in the restricted upper part of the estuary, characterized by rapid deposition of clay particles and terrestrial sedimentary organic matter. The comparison also showed that the most contaminated were the sediments from the Rižana, followed by those from the Rječina and Rosandra Creek, which had similar results. Among the studied elements, As was present in all sediment samples at concentrations [6 ppm that might have the lowest toxic effects. At the lower Rječina and in prodelta sediments, Pb was also present at slightly elevated concentrations ([31 ppm) that could cause such effects. Concentrations of Zn in the prodelta correspond to those occurring in moderately polluted sediments (90-200 ppm). In the prodelta sediments, Hg is slightly below toxicity threshold (1 ppm), while Ag is present at toxicity threshold (0.5 ppm) or close to it. Rječina River could act as a good illustrative example for behavior of toxic metals in allogenic karstic rivers, in which accumulation of anthropogenically introduced pollutants usually occurs in their estuaries, as a result of transport and deposition of fine particles.

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“…The first significant input of 137 Cs was caused by French atmospheric nuclear testing in Sahara at the beginning of 1960s (Norris and Arkin 1998) and the second by a nuclear accident in Chernobyl in April 1986. Using the positions of these two 137 Cs peaks in sediment columns, sedimentation rates were estimated (Cukrov et al 2011(Cukrov et al , 2009). …”

Section: Analytical Methods and Techniquesmentioning

confidence: 99%

“…Atmosphere-derived radionuclides such as 137 Cs (t 1/2 = 30.2 a), originating from above-ground testing of nuclear explosives carried out from 1945 to 1972, and some accidents in nuclear power plants, are widely used for sediment core dating (Cukrov et al 2011). In this study, the distribution of 137 Cs dated sediment cores are used to assess the sedimentation rates in different depositional sub-environments within the delta.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of stream sediments within the reclaimed coastal floodplain as indicator of anthropogenic impact (River Neretva, Croatia)

Kralj

Romić

et al. 2015

J Soils Sediments

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Purpose This study used multi-element signatures of stream sediments to assess both natural and human-induced impact on fluvial system in the River Neretva delta receiving environment over time. The river basin actually comprises several sub-catchments, and the geochemical features of major elements, trace metals radiometric and mineralogical characterisation of river bed sediments were used to assist the interpretation of the environment of deposition and its subsequent modifications caused by various anthropogenic pressures within the river basin. Materials and methods Five sites were chosen for sediment sampling at key locations within the study area with assumed undisturbed, continuous sedimentation process. At each of the sites, three representative cores were taken by scuba divers. Sample sites were selected in order to reflect the influence of different sub-catchments they belong to and the land-use pattern of the surrounding area. Samples were analysed for pH, redox-potential, granulometry, mineralogy, thermogravimetry, major and trace element concentrations and radionuclide activities. The univariate and multivariate statistics were applied. The geochemical normalisation of data was done using Al, the procedure based on calculation of the regression line of the metal on the normaliser followed by testing the ratios metal/ normaliser on all data-points. Results and discussion All studied sediments are classified as silt, ranging from clayey silt to silt and sandy silt. Mineralogically, the sediments were dominated by carbonates and quartz. The chemical contaminant data are generally of good quality, mostly below guideline levels. Sedimentation rates were estimated using vertical distribution of 137 Cs activities. Normalisation of TMs done by using Al shows strong R 2 adj values for the regressions of Al and V, Al and Cr, and Al and Ni. However, Al cannot fairly explain the fluctuation of the concentrations of Cd, Cu, Pb and Zn in sediment cores from all of the sampling sites. Generally, inorganic scavengers such as clay minerals followed by Fe and Mn oxides and S (pyrite and gypsum) seem to be dominant factors controlling TMs in studied sediments. Conclusions Although the River Neretva delta occupies a rather small area, the geochemical features of major and trace elements and 137 Cs activities show complex sediment provenances. Each of the sampling sites reflect exactly different effects of anthropogenic intervention that particularly refer to the changes in river morphology and ecology, along with the altered flow regimes within the catchment on sediment loads and quality.

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A recent history of metal accumulation in the sediments of Rijeka harbor, Adriatic Sea, Croatia

Cited by 100 publications

References 24 publications

Occurrence, risk assessment, and source apportionment of heavy metals in surface sediments from Khanpur Lake, Pakistan

Occurrence, risk assessment, and source apportionment of heavy metals in surface sediments from Khanpur Lake, Pakistan

Rječina River sediments (Croatia): from captured spring to polluted prodelta

Geochemistry of stream sediments within the reclaimed coastal floodplain as indicator of anthropogenic impact (River Neretva, Croatia)

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