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Evaluation of Holmium(III), Erbium(III), and Gadolinium(III) Accumulation by Cyanobacteria Arthrospira platensis Using Neutron Activation Analysis and Elements' Effects on Biomass Quantity and Biochemical Composition

Rare-earth elements are released into the aquatic environment as a result of their extensive use in industry and agriculture, and they can be harmful for living organisms. The effects of holmium(III), erbium(III), and gadolinium(III) when added to a growth medium in concentrations ranging from 10 to...

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Published in:Microorganisms (Basel) 2024-01, Vol.12 (1), p.122
Main Authors: Zinicovscaia, Inga, Cepoi, Liliana, Rudi, Ludmila, Chiriac, Tatiana, Grozdov, Dmitrii
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Cepoi, Liliana
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Chiriac, Tatiana
Grozdov, Dmitrii
description Rare-earth elements are released into the aquatic environment as a result of their extensive use in industry and agriculture, and they can be harmful for living organisms. The effects of holmium(III), erbium(III), and gadolinium(III) when added to a growth medium in concentrations ranging from 10 to 30 mg/L on the accumulation ability and biochemical composition of were studied. According to the results of a neutron activation analysis, the uptake of elements by cyanobacteria occurred in a dose-dependent manner. The addition of gadolinium(III) to the growth medium did not significantly affect the amount of biomass, whereas erbium(III) and holmium(III) reduced it up to 22% compared to the control. The effects of rare-earth elements on the content of proteins, carbohydrates, phycobiliproteins, lipids, β carotene, and chlorophyll were evaluated. The studied elements had different effects on the primary biomolecule content, suggesting that holmium(III) and erbium(III) were more toxic than Gd(III) for .
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subjects Accumulation
Activation analysis
Antioxidants
Aquatic environment
Arthrospira platensis
Bioaccumulation
Biochemical composition
Biomass
Biomolecules
Carbohydrates
Carotene
Chlorophyll
Communication
Composition
Culture media
Cyanobacteria
Erbium
Gadolinium
Holmium
Lipids
Neutron activation analysis
Neutrons
Phycobiliproteins
Rare earth elements
Toxicity
β-Carotene
title Evaluation of Holmium(III), Erbium(III), and Gadolinium(III) Accumulation by Cyanobacteria Arthrospira platensis Using Neutron Activation Analysis and Elements' Effects on Biomass Quantity and Biochemical Composition
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