Assessment of silver nanoparticle toxicity for common carp (Cyprinus carpio) fish embryos using a novel method controlling the agglomeration in the aquatic media

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39900129" target="_blank" >RIV/00216275:25310/15:39900129 - isvavai.cz</a>

Alternative codes found

RIV/61389013:_____/15:00454624 RIV/00216224:14310/15:00086677

Result on the web

<a href="http://dx.doi.org/10.1007/s11356-015-5120-4" target="_blank" >http://dx.doi.org/10.1007/s11356-015-5120-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-015-5120-4" target="_blank" >10.1007/s11356-015-5120-4</a>

Result language

angličtina

Original language name

Assessment of silver nanoparticle toxicity for common carp (Cyprinus carpio) fish embryos using a novel method controlling the agglomeration in the aquatic media

Original language description

Formation of agglomerates and their rapid sedimentation during aquatic ecotoxicity testing of nanoparticles is a major issue with a crucial influence on the risk assessment of nanomaterials. The present work is aimed at developing and testing a new approach based on the periodic replacement of liquid media during an ecotoxicological experiment which enabled the efficient monitoring of exposure conditions. A verified mathematical model predicted the frequencies of media exchanges which checked for formation of agglomerates from silver nanoparticles AgNP with 50 nm average size of the original colloid. In the model experiments, embryos of common carp Cyprinus carpio were exposed repeatedly for 6 h to AgNPs (5-50 mu m Ag L-1) either under semistatic conditions (exchange of media after 6 h) or in variants with frequent media exchanges (varying from 20 to 300 min depending on the AgNP colloid concentration and the desired maximum agglomerate size of 200 or 400 nm). In contrast to other studies, where dissolved free metals are usually responsible for toxic effects, our 144-h experiments demonstrated the importance of AgNP agglomerates in the adverse effects of nanosilver. Direct adsorption of agglomerates on fish embryos locally increased Ag concentrations which resulted in pronounced toxicity particularly in variants with larger 400 nm agglomerates. The present study demonstrates the suitability of the novel methodology in controlling the conditions during aquatic nanomaterial toxicity testing. It further provided insights into the mechanisms underlying the effects of AgNP, which rank on a global scale among the most widely used nanomaterials.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DN - Environmental impact on health

OECD FORD branch

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Project

<a href="/en/project/LO1214" target="_blank" >LO1214: Research Centre for Toxic Compounds in the Environment</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Science and Pollution Research

ISSN

0944-1344

e-ISSN

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Volume of the periodical

22

Issue of the periodical within the volume

23

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

19124-19132

UT code for WoS article

000365816000077

EID of the result in the Scopus database

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