Comparison of Chemical Speciation of Copper in the Oosterschelde and Westerschelde Estuaries, The Netherlands

Gerringa, Loes J. A.; Poortvliet, T.C.W.; Hummel, H.

doi:10.1006/ecss.1996.0041

Cited by 45 publications

(19 citation statements)

References 30 publications

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“…The relatively low geographical variation of Cu concentration in mussels (as shown by the ratio of maximal to minimal concentrations) suggests that the bivalves have the ability to partially regulate the accumulated body concentration of this metal as postulated by Phillips and Rainbow (1988) and Rainbow (1995). The low concentration of Cu in the soft tissue of Mytilus e. edulis collected from the Westerschelde was remarkable, and this is probably attributable to the high concentration of suspended organic matter with low carrying capacity for Cu in the water column (Gerringa et al 1996).…”

Section: Discussionmentioning

confidence: 88%

Comparison of trace metal bioavailabilities in European coastal waters using mussels from Mytilus edulis complex as biomonitors

Przytarska

Sokołowski

Wołowicz

et al. 2009

Environ Monit Assess

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Mussels from Mytilus edulis complex were used as biomonitors of the trace metals Fe, Mn, Pb, Zn, and Cu at 17 sampling sites to assess the relative bioavailability of metals in coastal waters around the European continent. Because accumulated metal concentrations in a given area can differ temporally, data were corrected for the effect of season before large-scale spatial comparisons were made. The highest concentration of Fe was noted in the North Sea and of Mn in the Baltic. Increased tissue concentrations of Pb were recorded in the mussels from the Bay of Biscay and the Baltic Sea. Low concentrations of metals were determined in the mussels from the Mediterranean Sea and the Northern Baltic. Relatively low geographic variations of Cu and Zn indicate that mussels are able to partially regulate accumulated body concentrations, which means Cu and Zn are, to some extent, independent of environmental concentrations.

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Section: Discussionmentioning

confidence: 88%

Comparison of trace metal bioavailabilities in European coastal waters using mussels from Mytilus edulis complex as biomonitors

Przytarska

Sokołowski

Wołowicz

et al. 2009

Environ Monit Assess

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“…In the WS, Zwolsman et al (1997) and Bordin et al (1992) showed strong seasonal variations in river flow, dissolved oxygen, pH, temperature, salinity and suspended particulate matter. Consequently, seasonal variations in dissolved heavy metals in the WS are more pronounced compared to the nearby less-polluted, tidal basin of the ES (Gerringa et al, 1996, Zwolsman et al, 1997Gerringa et al, 1998). Currently, little is known about the influence of seasonal changes on metal content in organisms in these areas.…”

Section: Introductionmentioning

confidence: 94%

“…Vertical and horizontal distribution of metals in the WS is greatly influenced by strong hydrodynamic and physico-chemical conditions prevailing in the estuary (Gerringa et al, 1996;Paucot & Wollast, 1997;Baeyens, 1998;Baeyens et al, 1998a, b, c;Garringa et al, 1998;Zwolsman & Van Eck, 1999). Physico-chemical factors are also responsible for physical and chemical partitioning behaviour and speciation of metals within and between different compartments.…”

Section: Introductionmentioning

confidence: 98%

Temporal and spatial trends in heavy metal concentrations in the marine mussel Mytilus edulis from the Western Scheldt estuary (The Netherlands)

et al. 2005

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Since the first North Sea Conference (1984, Bremen), all countries bordering the North Sea made commitments to reduce discharge of hazardous substances into the North Sea. From Belgium and The Netherlands, large reductions (upto 90%) in heavy metal emissions from land-based sources have been reported between 1985 and 2000. Recently, some studies in the Western Scheldt estuary (WS) have shown that total metal concentration in the water, sediments and suspended particles have decreased compared to levels in the 70s. However, data on aquatic organisms is still very limited and it is therefore difficult to confirm whether the reductions in pollution input and generally improving water quality in the WS have a corresponding impact on the levels of heavy metals in aquatic organisms. The current study measured metal concentrations in the soft tissues of mussels, Mytilus edulis (known to be good indicators of environmental metal pollution) during the period 1996-2002. Spatial (salinity and pollution gradients), temporal and seasonal variations were also studied. Results showed a down-stream decreasing trend for the metals studied (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) during all sampling campaigns. There was also a significant seasonal effect on tissue metal concentrations, with a peak observed around spring in both WS and the nearby less polluted Eastern Scheldt (ES). On temporal trends, a clear drop of metals in mussels was observed in the early 80s coinciding with the start of the efforts to reduce chemical pollution input into the North Sea. Since those early reductions, metal concentrations in mussels generally remained unchanged upto mid 90s. However, in recent times metal concentration in mussels have increased significantly, for example Cd in 2002 was almost 10 times the values in 1983 and similar to levels seen during the peak in the 70s. Other metals also increased in the 90s also reaching levels seen in the 70s. As there is no indication of recent increase in metal input into the estuary, we suggest that increased metal concentrations observed in mussels in recent years especially in the upper estuary are most likely a result of changes in physical and chemical speciation and metal bioavailability. Such changes may be caused by changes in some water quality parameters in the estuary (i.e. increased dissolved oxygen, concentration of organic matter), resulting in conditions that favour releases of sediment-bound metals into the water column. The relationship between metal content and season showed very similar annual profiles in the polluted WS and less polluted ES. Thus, seasonal variations in metal concentrations appear to be largely controlled by biological processes, while total body burdens are dependent on environmental levels and bioavailability.

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“…These are ion exchange and solvent extraction, ozone oxidation, and ultraviolet (UV) oxidation. Among them, the destruction of organic matter by UV irradiation at a natural pH has been used most frequently (Donat & Bruland 1990;Gerringa et al 1996). In this study, we tested the efficiency of UV irradiation to obtain 'total recoverable' metal concentrations in AMD samples.…”

Section: Effectiveness Of Ultraviolet Irradiation For Determining 'Tomentioning

confidence: 99%

In-situ electrochemical measurements of total concentration and speciation of heavy metals in acid mine drainage (AMD): assessment of the use of anodic stripping voltammetry

Jung¹,

Yun²,

Kim

et al. 2006

Environ Geochem Health

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We assessed the use of anodic stripping voltammetry (ASV) for in-situ determinations of both total concentration and speciation of dissolved heavy metals (Cd, Cu, Pb and Zn) in acid mine drainage (AMD). In the Kwangyang Au-Ag mine area of South Korea, different sites with varying water chemistry within an AMD were studied with a field portable anodic stripping voltammeter. Anodic stripping voltammetry after wet oxidation (acidification) was very sensitive enough to determine total concentration of dissolved Cd because Cd was dominantly present as 'labile' species, whilst the technique was not so effective for determining total Cu especially in the downstream sites from the retention pond, due to its complexation with organic matter. For dissolved Pb, the concentrations determined by ASV after wet oxidation generally agreed with those by ICP-AES. In the downstream samples (pH>5), however, ASV data after wet oxidation were lower than ICP-AES data because a significant fraction of dissolved Pb was present in those samples as 'inert' species associated with colloidal iron oxide particles. The determination of total dissolved Zn by ASV after wet oxidation appeared to be unsatisfactory for the samples with high Cu content, possibly due to the interference by the formation of Zn-Cu intermetallic compounds on the mercury coated electrode. In AMD samples with high dissolved iron, use of ultraviolet irradiation was not effective for determining total concentrations because humate destruction by UV irradiation possibly resulted in the removal of a part of dissolved heavy metals from waters through the precipitation of iron hydroxides.

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Comparison of Chemical Speciation of Copper in the Oosterschelde and Westerschelde Estuaries, The Netherlands

Cited by 45 publications

References 30 publications

Comparison of trace metal bioavailabilities in European coastal waters using mussels from Mytilus edulis complex as biomonitors

Comparison of trace metal bioavailabilities in European coastal waters using mussels from Mytilus edulis complex as biomonitors

Temporal and spatial trends in heavy metal concentrations in the marine mussel Mytilus edulis from the Western Scheldt estuary (The Netherlands)

In-situ electrochemical measurements of total concentration and speciation of heavy metals in acid mine drainage (AMD): assessment of the use of anodic stripping voltammetry

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