Heavy metal distribution in recent sediments of the Krka River Estuary — an example of sequential extraction analysis

Prohić, Esad; Kniewald, Goran

doi:10.1016/0304-4203(87)90015-6

Cited by 59 publications

(25 citation statements)

References 10 publications

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“…28 The advantage of using the BCR sequential extraction method is the provision of detailed information on the origin, mode of occurrence, physical-chemical and biological availability, mobilization and transport of trace metals. 17,20,28,29,30 Passos et al 19 applied the BCR method in sediments collected along the Poxim River, in the Brazilian state of Sergipe. The results showed the contribution of anthropogenic sources on the mobility and toxicity of trace metals by means of the Cd, Cr, Cu, Ni, Pb and Zn fractionations present in the sediments.…”

Section: Introductionmentioning

confidence: 99%

Trace Elements in River Waters and Sediments Before and After a Mining Dam Breach (Bento Rodrigues, Brazil)

Silva¹,

Bellato²,

Neto³

et al. 2018

Quim. Nova

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, the Fundão dam ruptured which caused the spill of a large quantity of tailings from the extraction of iron ores to the Gualaxo do Norte, Carmo and Doce Rivers. Seven months prior to the rupture, our group had collected water and sediment samples at 13 points along the Tripuí Creek and the entire length of the Carmo River. Six months after deposition of the mud, new samples were collected in the Carmo River. Thus, the present study sought to evaluate the concentrations of trace elements in the waters and their distribution and mobility in sediment by BCR sequential extraction before and after the deposition of the tailings mud. Arsenic concentrations in the water samples were between 10.4 and 50.4 µg L -1 , which exceeded 10 ug L -1 (maximum limit permitted by Brazilian environmental regulations for water destined for human consumption) . The tailing mud layer on the sediments caused concentration increases of As (20%), Cd (13%), Co (5%), Cr (9%), Cu (11%), Ni (4%), Pb (7%) and Zn (19%) in the easily remobilized fractions. The presence of the elements in these fractions was indicative of high ecotoxicological risk and potential harm to the health of the local population.

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Section: Introductionmentioning

confidence: 99%

Trace Elements in River Waters and Sediments Before and After a Mining Dam Breach (Bento Rodrigues, Brazil)

Silva¹,

Bellato²,

Neto³

et al. 2018

Quim. Nova

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“…Among mineral phases, calcite and aragonite, as well as quartz, illite and mica were found (Kralik et al 2006). The results of the aqua regia-soluble chemical composition are presented in Tables 1 and 2. As expected from other investigations in the region (Prohič and Kniewald 1987;Š urija and Branica 1995), more than half of the geochemical background is CaCO 3 with a rather low Mg content. The digestion method applied will leave Al-Fe-Mg-K-Na, as well as Ba-Li-Cr among the trace elements, partially within insoluble residues.…”

Section: The Coastal and Harbour Sediment Samplesmentioning

confidence: 57%

Environmental impact of historical harbour city Zadar (Croatia) on the composition of marine sediments and soils

Sager

Králík

2011

Environ Geochem Health

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Sediment samples and soils along the coast line of the Adriatic Sea were sampled along a transect near the coast line at Zadar/Croatia, ranging from north-western suburbs via the historical centre and the industrial area to south-east suburbs. The sediments were dominated by carbonates and clay minerals, and contaminations with Cd-Cu-Pb-Zn-TOC (total organic carbon) at the historical centre and the industrial site were detected, as well as P and Mo input at the mouth of a small creek, probably from agriculture. No trends between the composition of surface and subsurface sea sediments were seen. At the historic harbour site, total element concentrations versus grain size showed a minimum in the fine silt fraction for most of the elements analysed. The soil samples behind the shoreline were not carbonaceous, but dominated by Fe-Al- oxides, some contained high levels of Be-Cd-Cu-Sn-Zn. Surprisingly, high TOC values within the soils might be assigned to human impacts, not to humus. Contrary to data from street dust samples from Seoul city/Korea, which were measured within our laboratory at the same time, Pt-Ir-Au were at ambient levels due to the limited use of catalysts in cars in the Zadar area at the time of sampling.

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“…There is a notable difference however between the significance of the carbonate phase presented in this paper, with that of some other workers. Prohic (1987), for example, working on surficial sediments from the Krka river and estuary, found that the carbonate phase was quantitatively the most important phase for Cu, Pb and Zn, and Abaychi and Douabul (1986) state that in Arabian Gulf sediments, the carbonate phase is quantitatively the second most important phase for Cu and Zn after the residual phase, and the third in importance for Pb. It is interesting to note that in both cases, the environments were said to be free from significant anthropogenic pollution.…”

Section: Resultsmentioning

confidence: 97%

Copper, lead and zinc in salt marsh sediments of the Severn Estuary, UK: The potential for their early diagnetic mobility

Rae¹

1989

Environ Geochem Health

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Heavy metal distribution in recent sediments of the Krka River Estuary — an example of sequential extraction analysis

Cited by 59 publications

References 10 publications

Trace Elements in River Waters and Sediments Before and After a Mining Dam Breach (Bento Rodrigues, Brazil)

Trace Elements in River Waters and Sediments Before and After a Mining Dam Breach (Bento Rodrigues, Brazil)

Environmental impact of historical harbour city Zadar (Croatia) on the composition of marine sediments and soils

Copper, lead and zinc in salt marsh sediments of the Severn Estuary, UK: The potential for their early diagnetic mobility

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