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Pb uptake by the marine mussel Mytilus sp. Interactions with dissolved organic matter Sánchez-Marín, P.; Bellas, J.; Mubiana, V.K.; Lorenzo, J.I.; Blust, R.; Beiras, R. (2011). Pb uptake by the marine mussel Mytilus sp. Interactions with dissolved organic matter. Aquat. Toxicol. 102(1-2): 48-57. dx.doi.org/10.1016/j.aquatox.2010.12.012 In: Aquatic Toxicology. Elsevier Science: Tokyo; New York; London; Amsterdam. ISSN 0166-445X; e-ISSN 1879-1514

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 217988 [ download pdf ]

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Trefwoorden

Analytical techniques > Stripping analysis Anodic stripping voltammetry Bioavailability Chemical elements > Metals > Heavy metals > Lead Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine molluscs Humic substances Organic matter > Dissolved organic matter Mytilus edulis Linnaeus, 1758 [WoRMS] Marien/Kust

Author keywords

Metal bioavailability; Lead; Mussel; Humic substances; DOM; Anodic stripping voltammetry

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Auteurs		Top
Sánchez-Marín, P. Bellas, J. Mubiana, V.K.	Lorenzo, J.I. Blust, R. Beiras, R.

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Abstract

It is well known that dissolved organic matter binds metal ions and buffers them in natural waters. Although it is believed that a decrease in metal ion concentration should lead to a decrease in metal bioavailability, previous work has shown that Pb uptake by Mytilus edulis gills is greatly enhanced in the presence of humic acids. In the present work, the effect of more soluble organic matter (fulvic acids and DOM extracted from river) on Pb uptake by mussels and their gills is studied. Pb complexation by these organic substances was measured by anodic stripping voltammetry (ASV) and it is proven that Pb uptake by mussel gills in the presence of fulvic acids can be successfully predicted according to ASV-labile Pb concentrations. However, Pb uptake by whole mussels in the presence of river DOM is slightly higher than predicted on the basis of ASV measurements. The possible reasons leading to different effects of DOM on Pb uptake by mussels are discussed according to physicochemical properties of DOM.

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