Combined exposure to decabromodiphenyl ether and nano zero-valent iron aggravated oxidative stress and interfered with metabolism in earthworms

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Decabromodiphenyl ether (BDE-209) is a common brominated flame retardant in electronic waste, and nano zero-valent iron (nZVI) is a new material in the field of environmental remediation. Little is known about how BDE-209 and nZVI combined exposure influences soil organisms. During the 28 days study, we determined the effects of single and combined exposures to BDE-209 and nZVI on the oxidative stress and metabolic response of earthworms (Eisenia fetida). On day 7, compared to CK, malondialdehyde (MDA) content increased in most combined exposure groups. To remove MDA and reactive oxygen species (ROS), superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities were induced in most combined exposure groups. On day 28, compared to CK, the activities of SOD and CAT were inhibited, while POD activity was significantly induced, indicating that POD plays an important role in scavenging ROS. Combined exposure to BDE-209 and nZVI significantly affected amino acid biosynthesis and metabolism, purine metabolism, and aminoacyl-tRNA biosynthesis pathways, interfered with energy metabolism, and aggravated oxidative stress in earthworms. These findings provide a basis for assessing the ecological impacts of using nZVI to remediate soils contaminated with BDE-209 from electronic waste.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:926

Enthalten in:

The Science of the total environment - 926(2024) vom: 20. Apr., Seite 172033

Sprache:

Englisch

Beteiligte Personen:

Han, Ying [VerfasserIn]
Ling, Siyuan [VerfasserIn]
Hu, Shuangqing [VerfasserIn]
Shen, Genxiang [VerfasserIn]
Zhang, Hongchang [VerfasserIn]
Zhang, Wei [VerfasserIn]

Links:

Volltext

Themen:

4Y8F71G49Q
Antioxidants
Catalase
Decabromobiphenyl ether
Decabromodiphenyl ether
E1UOL152H7
EC 1.11.1.6
EC 1.15.1.1
Eisenia fetida
Halogenated Diphenyl Ethers
Iron
Journal Article
Malondialdehyde
Metabolomics
N80BQ29A0H
Nano zero-valent iron
Oxidative stress
Reactive Oxygen Species
Soil
Soil Pollutants
Superoxide Dismutase

Anmerkungen:

Date Completed 17.04.2024

Date Revised 17.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.scitotenv.2024.172033

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370375009