Detail publikace

Comparative investigation of toxicity and bioaccumulation of Cd-based quantum dots and Cd salt in freshwater plant Lemna minor L.

MODLITBOVÁ, P. NOVOTNÝ, K. POŘÍZKA, P. KLUS, J. LUBAL, P. ZLÁMALOVÁ GARGOŠOVÁ, H. KAISER, J.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The purpose of this study was to determine the toxicity of two different sources of cadmium, i.e. CdCl2 and Cd-based Quantum Dots (QDs), for freshwater model plant Lemna minor L. Cadmium telluride QDs were capped with two coating ligands: glutathione (GSH) or 3-mercaptopropionic acid (MPA). Growth rate inhibition and final biomass inhibition of L. minor after 168-h exposure were monitored as toxicity endpoints. Dose-response curves for Cd toxicity and EC50168h values were statistically evaluated for all sources of Cd to uncover possible differences among the toxicities of tested compounds. Total Cd content and its bioaccumulation factors (BAFs) in L. minor after the exposure period were also determined to distinguish Cd bioaccumulation patterns with respect to different test compounds. Laser-Induced Breakdown Spectroscopy (LIBS) with lateral resolution of 200 µm was employed in order to obtain two-dimensional maps of Cd spatial distribution in L. minor fronds. Our results show that GSH- and MPA-capped Cd-based QDs have similar toxicity for L. minor, but are significantly less toxic than CdCl2. However, both sources of Cd lead to similar patterns of Cd bioaccumulation and distribution in L. minor fronds. Our results are in line with previous reports that the main mediators of Cd toxicity and bioaccumulation in aquatic plants are Cd2+ ions dissolved from Cd-based QDs.

Klíčová slova

Bioaccumulation; Cadmium; Quantum dots; Laser-Induced Breakdown Spectroscopy; Lemna minor L.; Toxicity

Autoři

MODLITBOVÁ, P.; NOVOTNÝ, K.; POŘÍZKA, P.; KLUS, J.; LUBAL, P.; ZLÁMALOVÁ GARGOŠOVÁ, H.; KAISER, J.

Vydáno

1. 1. 2018

Nakladatel

Elsevier B.V.

ISSN

1090-2414

Periodikum

Ecotoxicology and Environmental Safety

Ročník

147

Číslo

Stát

Spojené království Velké Británie a Severního Irska

Strany od

334

Strany do

341

Strany počet

BibTex

@article{BUT139340,
  author="MODLITBOVÁ, P. and NOVOTNÝ, K. and POŘÍZKA, P. and KLUS, J. and LUBAL, P. and ZLÁMALOVÁ GARGOŠOVÁ, H. and KAISER, J.",
  title="Comparative investigation of toxicity and bioaccumulation of Cd-based quantum dots and Cd salt in freshwater plant Lemna minor L.",
  journal="Ecotoxicology and Environmental Safety",
  year="2018",
  volume="147",
  number="1",
  pages="334--341",
  doi="10.1016/j.ecoenv.2017.08.053",
  issn="1090-2414"
}