Comparative investigation of toxicity; bioaccumulation and
distribution of Cd-based Quantum dots and Cd salt in freshwater
plant Lemna minor

a 2017

Comparative investigation of toxicity; bioaccumulation and distribution of Cd-based Quantum dots and Cd salt in freshwater plant Lemna minor

ŠKARKOVÁ, Pavlína, Karel NOVOTNÝ, Pavel POŘÍZKA, Jakub KLUS, Přemysl LUBAL et. al.

Základní údaje

Originální název

Comparative investigation of toxicity; bioaccumulation and distribution of Cd-based Quantum dots and Cd salt in freshwater plant Lemna minor

Autoři

ŠKARKOVÁ, Pavlína (203 Česká republika), Karel NOVOTNÝ (203 Česká republika, garant, domácí), Pavel POŘÍZKA (203 Česká republika), Jakub KLUS (203 Česká republika), Přemysl LUBAL (203 Česká republika, domácí) a Jozef KAISER (203 Česká republika)

Vydání

CSI XL - IX EMSLIBS, 2017

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10400 1.4 Chemical sciences

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/17:00099876

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

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

Štítky

Příznaky

Mezinárodní význam

Změněno: 15. 5. 2018 08:36, Ing. Nicole Zrilić

Anotace

V originále

Quantum dots (QDs) are fluorescent semiconductor nanocrystals with increasing use, mainly as labels for tagging or imaging in biological systems1. Like other classes of nanomaterials, they may eventually find their way into the environment. Thus it is of a high importance to research the toxicity of Cd-based QDs to environmental organisms, which may come into contact with QD-containing products when they are discarded. The purpose of this study was to determine the toxicity of two different sources of cadmium, i. e. CdCl2 and Cd-based QDs, for freshwater model plant Lemna minor. 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-hour 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. We also determined the total content of Cd and its bioaccumulation factors (BAFs) in L. minor after the exposure period to distinguish Cd bioaccumulation patterns with respect to different test compounds. Laser-Induced Breakdown Spectroscopy (LIBS) with lateral resolution of 200 um 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.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

Citovat

ŠKARKOVÁ, Pavlína, Karel NOVOTNÝ, Pavel POŘÍZKA, Jakub KLUS, Přemysl LUBAL a Jozef KAISER. Comparative investigation of toxicity; bioaccumulation and distribution of Cd-based Quantum dots and Cd salt in freshwater plant Lemna minor. In CSI XL - IX EMSLIBS. 2017.

@proceedings{1406716,
   author = {Škarková, Pavlína and Novotný, Karel and Pořízka, Pavel and Klus, Jakub and Lubal, Přemysl and Kaiser, Jozef},
   booktitle = {CSI XL - IX EMSLIBS},
   keywords = {Bioaccumulation; Cadmium; Quantum dots; Laser-Induced Breakdown Spectroscopy; Lemna minor L.; Toxicity},
   language = {eng},
   title = {Comparative investigation of toxicity; bioaccumulation and distribution of Cd-based Quantum dots and Cd salt in freshwater plant Lemna minor},
   year = {2017}
}

TY  - CONF
ID  - 1406716
AU  - Škarková, Pavlína - Novotný, Karel - Pořízka, Pavel - Klus, Jakub - Lubal, Přemysl - Kaiser, Jozef
PY  - 2017
TI  - Comparative investigation of toxicity; bioaccumulation and distribution of Cd-based Quantum dots and Cd salt in freshwater plant Lemna minor
KW  - Bioaccumulation
KW  - Cadmium
KW  - Quantum dots
KW  - Laser-Induced Breakdown Spectroscopy
KW  - Lemna minor L.
KW  - Toxicity
N2  - Quantum dots (QDs) are fluorescent semiconductor nanocrystals with increasing use, mainly as labels for tagging or imaging in biological systems1. Like other classes of nanomaterials, they may eventually find their way into the environment. Thus it is of a high importance to research the toxicity of Cd-based QDs to environmental organisms, which may come into contact with QD-containing products when they are discarded. The purpose of this study was to determine the toxicity of two different sources of cadmium, i. e. CdCl2 and Cd-based QDs, for freshwater model plant Lemna minor. 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-hour 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. We also determined the total content of Cd and its bioaccumulation factors (BAFs) in L. minor after the exposure period to distinguish Cd bioaccumulation patterns with respect to different test compounds. Laser-Induced Breakdown Spectroscopy (LIBS) with lateral resolution of 200 um 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.
ER  -

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