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

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73589922" target="_blank" >RIV/61989592:15310/18:73589922 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/00216224:14310/18:00106149 RIV/67985939:_____/18:00508571

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S2352940718301562" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352940718301562</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>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

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

  • Popis výsledku v původním jazyce

    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&apos; toxicological effects. (C) 2018 Elsevier Ltd. All rights reserved.

  • Název v anglickém jazyce

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

  • Popis výsledku anglicky

    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&apos; toxicological effects. (C) 2018 Elsevier Ltd. All rights reserved.

Klasifikace

  • Druh

    J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS

  • CEP obor

  • OECD FORD obor

    21001 - Nano-materials (production and properties)

Návaznosti výsledku

  • Projekt

    Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2018

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Applied Materials Today

  • ISSN

    2352-9407

  • e-ISSN

  • Svazek periodika

    12

  • Číslo periodika v rámci svazku

    SEP

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    9

  • Strana od-do

    198-206

  • Kód UT WoS článku

    000443213700018

  • EID výsledku v databázi Scopus

    2-s2.0-85048470029