Sedimentation of trace metals in the Gulf of Bothnia

Leivuori, Mirja; Niemistö, Lauri

doi:10.1016/0045-6535(95)00257-9

Cited by 42 publications

(23 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…None of the parameters correlated clearly with depth. This result is in contrast to previous studies from the Gulf of Bothnia where such a trend was found (Leivuori and Niemistö 1995).…”

Section: Resultscontrasting

confidence: 86%

“…The focus of these studies have mainly been the following: (1) deposition trends and behaviour of pollutants in the deeper and mainly anoxic parts (Andrén et al 2000;Vallius and Kunzendorf 2001), (2) deposition of pollutants close to river outlets (Vallius and Leivuori 1999;Nordmyr et al 2007) and (3) studies on the large-scale spatial distribution of chemical elements in surface sediments (Boström et al 1978;Borg and Jonsson 1996). Previous sediment studies in the Bothnian Sea and Gulf of Finland, adjacent to the Archipelago Sea, have shown that concentration of some anthropogenic elements increases with water depth (Leivuori and Niemistö 1995). There is also a clear decrease of anthropogenically derived elements with distance from polluting river mouths Electronic supplementary material The online version of this article (doi:10.1007/s12665-010-0561-z) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Geochemistry of surface sediments in the Archipelago Sea, SW Finland: a multiparameter and multivariate study

et al. 2010

View full text Add to dashboard Cite

This study investigates the geochemistry of soft, organic-rich brackish-water surface sediments in the Archipelago Sea (SW Finland). The area is one of the world's largest archipelagos, and, although it is scarcely populated, frequent ship and boat traffic along with fish farming occurs. From 76 sites, 47 chemical elements were determined after aqua regia digestion. Other parameters determined were grain size, water, organic and nitrogen contents. At sampling, the sediments were visually classified into groups representing oxic, anoxic and fluctuating (intermediate) oxic seafloor conditions. The results show that the element concentrations are quite similar to other studies in the region but with clear signs of lower anthropogenic loading. Point source pollution was identified in one sample taken nearby a fish farm and a cable ferry. This site was strongly enriched in Cu, Zn and Sn derived from chemicals used in either, or both, activities at the site. Overall, the sediments can be divided into two groups that separate chemically and geographically. One group contains more fine-grained sediments that occur near shore, while the other group contains more anoxic, organic and sulfur-rich sediments occurring more offshore. The second group is interpreted to reflect material reworked from previous deposits as a result of shoaling of the area due to glacio-isostatic land uplift. The visual classes were included in both partial least squares regression (PLSR) and PLS discriminant analysis. These analyses showed that the oxic and anoxic seafloor sediments can be predicted from the chemical variables and grain-size distribution.

show abstract

“…None of the parameters correlated clearly with depth. This result is in contrast to previous studies from the Gulf of Bothnia where such a trend was found (Leivuori and Niemistö 1995).…”

Section: Resultscontrasting

confidence: 86%

Section: Introductionmentioning

confidence: 98%

Geochemistry of surface sediments in the Archipelago Sea, SW Finland: a multiparameter and multivariate study

et al. 2010

View full text Add to dashboard Cite

show abstract

“…including the Bothnian Bay) is 7 mm per year. This uplift leads to significant erosion and lateral transport of material from shallow areas into the deep basins of the Bothnian Sea [42]. A major proportion of the organic matter is thus relatively refractory.…”

Section: Discussionmentioning

confidence: 99%

Coupled Dynamics of Iron and Phosphorus in Sediments of an Oligotrophic Coastal Basin and the Impact of Anaerobic Oxidation of Methane

et al. 2013

View full text Add to dashboard Cite

Studies of phosphorus (P) dynamics in surface sediments of lakes and coastal seas typically emphasize the role of coupled iron (Fe), sulfur (S) and P cycling for sediment P burial and release. Here, we show that anaerobic oxidation of methane (AOM) also may impact sediment P cycling in such systems. Using porewater and sediment profiles for sites in an oligotrophic coastal basin (Bothnian Sea), we provide evidence for the formation of Fe-bound P (possibly vivianite; Fe3(PO4)2 .8H2O) below the zone of AOM with sulfate. Here, dissolved Fe2+ released from oxides is no longer scavenged by sulfide and high concentrations of both dissolved Fe2+ (>1 mM) and PO4 in the porewater allow supersaturation with respect to vivianite to be reached. Besides formation of Fe(II)-P, preservation of Fe-oxide bound P likely also contributes to permanent burial of P in Bothnian Sea sediments. Preliminary budget calculations suggest that the burial of Fe-bound P allows these sediments to act as a major sink for P from the adjacent eutrophic Baltic Proper.

show abstract

“…(Algan et al 2004;Al-Ghadban and El-Sammak 2005;Aloupi and Angelidis 2001;Aloupi and Angelidis 2002;Everrarts 1989;Everrarts and Fischer 1992;Frignani and Belluci 2004;Herut 1997;Herut and Halicz 2004;Jordanova et al 1999;Kiratli and Ergin 1996;Lakhan et al 2003;Langston et al 1999;Leivuori 1998;Leivuori and Niemisto 1995;Loring et al 1998;Pempkowiak et al 1999;Petronio et al 2000;Piani et al 2005;Ravanelli et al 1997;Ridgway et al 2003;Rivaro et al 2004;Sari and Catagay 2001;Savvides et al 1995;Secrieru and Secrieru 2002;Tkalin et al 1996;Topcuoglu et al 2002;Topcuoglu et al 2004;Trefry et al 2003;Vallius 1999). However, no previous studies have been conducted on surface sediments from the studied locations of the Algerian Mediterranean coasts.…”

mentioning

confidence: 84%

“…The range of Zn in the studied sediments was 5.3-45.7 μg/g with the lowest value at site 4 and the highest at site 13. Previous studies showed that Zn concentrations in polluted sediments is up to 4,000 μg/g (Aloupi and Angelidis 2002;Everrarts and Fischer 1992;Leivuori 1998;Leivuori and Niemisto 1995;Spencer and MacLeod 2002) and in unpolluted sites it ranged from 9 to 162 μg/g (Algan et al 2004;Ridgway et al 2003;Sari and Catagay 2001).…”

Section: Zinc (Zn)mentioning

confidence: 98%

Determination of heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, Zn) by ICP-OES and their speciation in Algerian Mediterranean Sea sediments after a five-stage sequential extraction procedure

Alomary

Belhadj

2007

Environ Monit Assess

View full text Add to dashboard Cite

Surface sediment samples (n = 18) were collected from the Algerian Mediterranean coasts and analyzed for seven metals using inductively coupled plasma-optical emission spectrometry in order to asses the distribution and bioavailability of metals and to study the anthropogenic factors affecting their concentrations. Sediment samples were size-fractionated into three sizes: 1,080-500 (coarse), 500-250 (medium), and <250 mm (fine). Bulk sediments were subjected to both sequential extraction and total digestion to evaluate the reliability of the sequential extraction procedure (SEP), while the fractions have been only sequentially extracted for metals speciation. The metals were sequentially extracted into five phases namely exchangeable (P1), carbonates (P2), Fe-Mn oxides (P3), organic (P4) and residual (P5). Metal recoveries in sequential extractions were +/-20% of the independently measured total metal concentrations; the high recovery rates indicate the good reliability of the SEP used in this study. Correlation coefficients indicated that the grain size has an effect on the distribution of metals in the investigated samples. The order of metal levels in the fractions was medium > fine > coarse for all the metals. The average total extractable metal concentrations for Cd, Cr, Cu, Fe, Ni, Pb, and Zn were 1.1, 8.8, 4.7, 1,291.3, 13.9, 5.7 and 20.4 mug/g, respectively. The northeastern shelf had the lowest metal levels while the highest were in northwestern part mainly due to the significant tourism activities in the northwestern part. Comparison of our results to Earth's crust values and to previous studies points out that our samples were relatively unpolluted with respect to the heavy metals investigated; most of the metals are not from anthropogenic sources. Enrichment factors as the criteria for examining the impact of the anthropogenic sources of heavy metals were calculated, and it was observed that the investigated samples were not contaminated with Cr, Cu, and Fe, moderately contaminated with Ni, Pb, and Cd, and contaminated with Cd in some sites. The P5 phase had the highest percents of Cr, Cu, Fe, Ni, and Zn. Cadmium and lead were predominant in the P4 phase, while Cu, Fe and Zn were distributed in the order P5 > P3 > P4 > P2 > P1. The following order of bioavailability was found with the heavy metals Pb > Cr > Cd > Ni > Zn > Cu > Fe.

show abstract

Sedimentation of trace metals in the Gulf of Bothnia

Cited by 42 publications

References 3 publications

Geochemistry of surface sediments in the Archipelago Sea, SW Finland: a multiparameter and multivariate study

Geochemistry of surface sediments in the Archipelago Sea, SW Finland: a multiparameter and multivariate study

Coupled Dynamics of Iron and Phosphorus in Sediments of an Oligotrophic Coastal Basin and the Impact of Anaerobic Oxidation of Methane

Determination of heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, Zn) by ICP-OES and their speciation in Algerian Mediterranean Sea sediments after a five-stage sequential extraction procedure

Contact Info

Product

Resources

About