The chronic effects of CuO and ZnO nanoparticles on Eisenia fetida in relation to the bioavailability in aged soils
| Autor: | Patryk Oleszczuk, Izabela Jośko, Magdalena Kusiak |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Eisenia fetida
Environmental Engineering Health Toxicology and Mutagenesis 0208 environmental biotechnology Biological Availability 02 engineering and technology 010501 environmental sciences Silt 01 natural sciences Metal Soil Animals Soil Pollutants Environmental Chemistry Oligochaeta 0105 earth and related environmental sciences biology Chemistry Public Health Environmental and Occupational Health General Medicine General Chemistry biology.organism_classification Pollution Engineered nanoparticles 020801 environmental engineering Bioavailability Loam Environmental chemistry visual_art Bioaccumulation Soil water visual_art.visual_art_medium Zinc Oxide Copper |
| Zdroj: | Chemosphere. 266:128982 |
| ISSN: | 0045-6535 |
| Popis: | The bioavailability and bioaccumulation of metal-based engineered nanoparticles (ENPs) in soils need to be evaluated in environmentally relevant scenarios. The aim of this study was an analysis of potentially available metal–component ENPs (nano-ZnO and nano-CuO) in soils. Earthworms (Eisenia fetida) were used to examine the bioaccumulation potential of ENPs. Micro-particles (micro-ZnO and micro-CuO) and metal salts (ZnCl2 and CuCl2) were used to evaluate the nano-effect and the activity of dissolved ions, respectively. Zn- and Cu-compounds were added to sandy loam and silt loam at a concentration of 10 mg kg−1. The bioavailable fractions of metals were extracted from soil using H2O, MgCl2 with CH3COONa or EDTA. EDTA was the most effective extractant of Zn and Cu (10.06–11.65 mg Zn kg−1 and 2.69–3.52 mg Cu kg−1), whereas the H2O-extractable metal concentration was at the lowest level (1.98–2.12 mg Zn kg−1 and 0.54–0.82 Cu mg kg−1). The bioavailable metal concentrations were significantly higher in silt loam than sandy loam soil, which was related to the higher pH value of silt. There were no significant differences between the Zn content in the earthworms incubated in the two soils, which may confirm the auto-regulation of the Zn content by earthworms. However, the bioaccumulation of Cu was strongly correlated with the extractable Cu concentrations. The juvenile earthworms accumulated Cu and Zn more than adults. Based on our results, aging neutralized the differences between the ionic and particulate effects of metal–compounds. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect