Setting a protective threshold value for silver toward freshwater organisms

Autor: Karel A.C. De Schamphelaere, Jelle Mertens, Patrick Van Sprang, Charlotte Nys, Katrien Arijs
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Aquatic Organisms
Silver
Species sensitivity distributions
Health
Toxicology and Mutagenesis
RAINBOW-TROUT
Fresh Water
02 engineering and technology
BIOAVAILABILITY MODELS
010501 environmental sciences
Ecotoxicology
01 natural sciences
FATHEAD MINNOWS
chemistry.chemical_compound
Nitrate
Freshwater toxicology
Aquatic plant
Brachionus calyciflorus
Dissolved organic carbon
Environmental Chemistry
media_common.cataloged_instance
European union
LIFE-CYCLE TEST
0105 earth and related environmental sciences
media_common
Lemna minor
biology
Chemistry
Water quality criteria
PSEUDOKIRCHNERIELLA-SUBCAPITATA
021001 nanoscience & nanotechnology
biology.organism_classification
SODIUM-CHLORIDE
Environmental Toxicology
TROUT ONCORHYNCHUS-MYKISS
DAPHNIA-MAGNA
CHRONIC TOXICITY
Environmental chemistry
Earth and Environmental Sciences
Environmental toxicology
Metal toxicity
NOSTOC-MUSCORUM
Ecotoxicity
0210 nano-technology
Water Pollutants
Chemical
Zdroj: ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Environmental Toxicology and Chemistry
ISSN: 0730-7268
1552-8618
Popis: Driven by Regulation (EC) No. 1272/2008 and the European Water Framework Directive 2000/60/EC, we have re‐evaluated the available chronic freshwater ecotoxicity data for ionic silver (Ag) using strict data quality criteria. In addition, we generated new chronic ecotoxicity data for species potentially sensitive to Ag (the rotifer Brachionus calyciflorus, the cyanobacteria Anabaena flos‐aquae, and the aquatic plant Lemna minor) using Ag nitrate as the test substance. The 10% effect concentrations for the most sensitive endpoint per test species were 0.31 µg dissolved Ag/L for B. calyciflorus (population size), 0.41 µg dissolved Ag/L for A. flos‐aquae (growth rate), and 1.40 µg dissolved Ag/L for L. minor (root length). We included these values in the set of reliable chronic freshwater data, subsequently covering a total of 12 taxonomic groups and 15 species. Finally, we applied a species sensitivity distribution approach to the data set using various models. The best‐fitting model (Rayleigh distribution) resulted in a threshold value protective for 95% of the species of 0.116 µg dissolved Ag/L. This value is considered reliable and conservative in terms of species protection and can be used as a solid basis for setting thresholds for Ag in freshwater after application of an appropriate assessment factor. Furthermore, this value represents reasonable worst‐case conditions for bioavailability in European Union surface waters (low hardness and low dissolved organic carbon). Environ Toxicol Chem 2021;40:1678–1693. © 2021 European Precious Metals Federation. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
Databáze: OpenAIRE
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