NDLI: More than inorganic copper is bioavailable to aquatic mosses at environmentally relevant concentrations.

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More than inorganic copper is bioavailable to aquatic mosses at environmentally relevant concentrations.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ferreira, Daniel Tousset, Nicolas Ridame, Céline Tusseau-Vuillemin, Marie-Hélène
Spatial Coverage	France
Description	Country affiliation: France Author Affiliation: Ferreira D ( Electricité de France, Division Recherche et Développement, Département Laboratoire National d'Hydraulique et Environnement, 6 Quai Watier, 78401 Chatou, France. daniel.ferreira@edf.fr)
Abstract	The present study investigates how dissolved organic matter (DOM) alters copper bioavailability at environmentally relevant concentrations (1-5 microg/L of dissolved copper, 1-4 mg/L of dissolved organic copper). A methodology combining two biological endpoints (short-term and steady-state bioaccumulation of copper by the aquatic moss Fontinalis antipyretica) and a sampling of labile copper with diffusion gradient in thin films (DGT) is proposed for batch experiments conducted with mineral water and various DOM, ethylenediaminetetra-acetic acid (EDTA), humic acid, and natural Seine River (France) extracts (hydrophobic and transphilic fractions). All types of DOM reduce the bioavailability of copper to aquatic mosses, and this reduction was more pronounced for the short-term biological endpoint, which was taken as being representative for environmental exposure. Labile copper sampled with DGT made it possible to estimate short-term bioaccumulation in the case of EDTA and natural Seine River extracts. With humic acid solutions, however, labile copper was lower than bioavailable copper. This result suggests that at realistic metal concentrations and with certain types of natural DOM, bioavailable copper might comprise not only inorganic copper but also some weak organic complexes. Hence, labile copper, in situ sampled with DGT, might not systematically overestimate bioavailable copper, as suggested previously on the basis of in vitro toxicity studies.
File Format	HTM / HTML
ISSN	07307268
Issue Number	10
Volume Number	27
e-ISSN	15528618
Journal	Environmental Toxicology and Chemistry
Language	English
Publisher	Wiley
Publisher Date	2008-10-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water Pollutants, Chemical Research Support, Non-u.s. Gov't Discipline Environmental Health Discipline Toxicology Bryophyta Edetic Acid Metabolism Journal Article Organometallic Compounds Specimen Handling Chemistry Algorithms Solutions Analysis Endpoint Determination Discipline Chemistry Fresh Water Kinetics Copper France Humic Substances
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis

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More than inorganic copper is bioavailable to aquatic mosses at environmentally relevant concentrations.

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