Influence of humic acids on zinc oxide nanoparticles and zinc chloride toxicity to Enchytraeus crypticus studied in agar based exposure media

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39913158" target="_blank" >RIV/00216275:25310/18:39913158 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Influence of humic acids on zinc oxide nanoparticles and zinc chloride toxicity to Enchytraeus crypticus studied in agar based exposure media

Original language description

Composition of the exposure media always affects the properties of nanomaterials. In terrestrial ecotoxicology, the complex nature of the soil highly complicates the prediction of impacts of pollutants upon the environment. In our study, less complex agar-based exposure medium had been therefore used instead a soil. An acute toxicity of zinc oxide nanoparticle (ZnO-NPs, mean particle size diameter of 10 nm) powder and of water-soluble salt of zinc (ZnCl2) to annelid Enchytraeus crypticus were tested, while agar-based exposure medium was modified with two sources of humic acids (sodium humate, peat) in order to study the influence of soil component and its form on toxicity of zinc. In the case of ZnCl2, an addition of humic acid always reduced the toxicity. The respective values of LC50 were 13.2, 28.8, and 191 mg kg-1 for pure agar, agar with sodium humate, and agar with peat, respectively. On the contrary, the addition of sodium humate into an agar increased toxicity of ZnO NPs and the reduction in toxicity was observed only for the addition of a peat. The corresponding LC50 values then were 43.5 (pure agar), 15.8 (agar with sodium humate), and 304 (agar with peat) mg kg-1.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Name of the periodical

Scientific Papers of the University of Pardubice, Series A, Faculty of Chemical Technology

ISSN

1211-5541

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

November

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

187-196

UT code for WoS article

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EID of the result in the Scopus database

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