Culture medium mediated aggregation and re-crystallization of silver nanoparticles reduce their toxicity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F18%3A00508571" target="_blank" >RIV/67985939:_____/18:00508571 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/18:73589922 RIV/00216224:14310/18:00106149

Result on the web

<a href="http://hdl.handle.net/11104/0299463" target="_blank" >http://hdl.handle.net/11104/0299463</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apmt.2018.05.004" target="_blank" >10.1016/j.apmt.2018.05.004</a>

Result language

angličtina

Original language name

Culture medium mediated aggregation and re-crystallization of silver nanoparticles reduce their toxicity

Original language description

Due to their wide uses in both domestic and industrial applications it is important to consider possible releases of silver nanoparticles (AgNPs) into the environment and the possible consequences. Thus, the potential toxicity of AgNPs to aquatic organisms has been intensively studied recently. However, culture media composition and stability of AgNPs seriously affect dose-response relationship. In present study the chronic toxicity of AgNPs to Daphnia magna in undiluted and 2-fold diluted media was examined. Both gelatin-stabilized and non-stabilized AgNPs were synthesized and their stability was assessed by transmission electron microscopy and UV/Visible spectroscopy. The half maximal effective concentrations (EC50 values) for D. magna reproduction of non-stabilized AgNPs in undiluted medium, non-stabilized AgNPs in 2-fold diluted medium and AgNPs stabilized with 0.0001% (w/v) gelatin in 2-fold diluted medium were found to be 0.96, 0.32 and 0.16 mg/L, respectively. AgNPs stabilized with 0.005% gelatin did not aggregate and marked toxicity was observed across the AgNP concentration range from 0.001 to 1 mg/L. On the contrary, AgNPs with low stability in media were subjected to aggregation and re-crystallization towards large particles, which reduced their toxicity. Thus, the results demonstrate the importance of rigorous characterization of media composition for robust assessment of AgNPs' toxicological effects.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20801 - Environmental biotechnology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Applied Materials Today

ISSN

2352-9407

e-ISSN

—

Volume of the periodical

12

Issue of the periodical within the volume

SEP 2018

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

198-206

UT code for WoS article

000443213700018

EID of the result in the Scopus database

2-s2.0-85048470029