An interlaboratory comparison of nanosilver characterisation and hazard identification: Harmonising techniques for high quality data

Autor: Anita Jemec, Anne Kahru, Annegret Potthoff, Damjana Drobne, Margit Heinlaan, Steffi Böhme, Mark Geppert, Sara Novak, Kristin Schirmer, Rohit Rekulapally, Shashi Singh, Villem Aruoja, Mariliis Sihtmäe, Katre Juganson, Aleksandr Käkinen, Dana Kühnel
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Environment International, Vol 87, Iss , Pp 20-32 (2016)
Druh dokumentu: article
ISSN: 0160-4120
DOI: 10.1016/j.envint.2015.10.014
Popis: Within the FP7 EU project NanoValid a consortium of six partners jointly investigated the hazard of silver nanoparticles (AgNPs) paying special attention to methodical aspects that are important for providing high-quality ecotoxicity data. Laboratories were supplied with the same original stock dispersion of AgNPs. All partners applied a harmonised procedure for storage and preparation of toxicity test suspensions. Altogether ten different toxicity assays with a range of environmentally relevant test species from different trophic levels were conducted in parallel to AgNP characterisation in the respective test media. The paper presents a comprehensive dataset of toxicity values and AgNP characteristics like hydrodynamic sizes of AgNP agglomerates and the share (%) of Ag+-species (the concentration of Ag+-species in relation to the total measured concentration of Ag). The studied AgNP preparation (20.4 ± 6.8 nm primary size, mean total Ag concentration 41.14 mg/L, 46–68% of soluble Ag+-species in stock, 123.8 ± 12.2 nm mean z-average value in dH2O) showed extreme toxicity to crustaceans Daphnia magna, algae Pseudokirchneriella subcapitata and zebrafish Danio rerio embryos (EC50
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