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The influence of surface waters on the bioavailability and toxicity of zinc oxide nanoparticles in freshwater mussels
- Source :
- Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology. 219:1-11
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The release of engineered nanoparticles in the aquatic environment could pose a threat to the biota. The purpose of the study was to examine the influence of surface water characteristics on zinc oxide nanoparticles (nZnO) and ZnS04 toxicity to the freshwater mussel Dreissena polymorpha. Mussels were exposed to an equivalent concentration of 25 μg/L Zn as either nZnO or ZnSO4 for 96 h at 15 °C in 4 types of surface waters: green water (high conductivity and pH with low natural organic matter content), brown water (low conductivity and pH with high natural organic matter content), diluted municipal effluent (high conductivity and pH with high urban organic matter content) and aquarium water (treated green water with organic matter removed). After the exposure period, mussels were analyzed for air-time survival, total and labile Zn levels in tissues, lipid metabolism (phospholipase A2, triglycerides levels) and oxidative stress (glutathione S-transferase, arachidonate cyclooxygenase, lipid peroxidation). The data revealed that mussels exposed to ZnSO4 in controlled aquarium water accumulated more total and labile Zn tissues, decreased oxidative stress and triglycerides and increased air time survival. While nZnO had few effects in aquarium water, oxidative stress was enhanced and total Zn in tissues were decreased in brown water and diluted municipal effluent and triglycerides were higher in nZn-exposed mussels in brown water. Air-time survival was decreased in mussels kept in green water and nZnO. It was also decreased in mussels exposed to ZnSO4 in green water and diluted municipal effluent. In conclusion, the fate and toxic effects of Zn could be influenced by both the chemical form (nanoparticles or ionic Zn) and surface water properties in freshwater mussels.
- Subjects :
- Physiology
Health, Toxicology and Mutagenesis
Biological Availability
Metal Nanoparticles
chemistry.chemical_element
Zinc
010501 environmental sciences
Toxicology
01 natural sciences
Biochemistry
Dreissena
Lipid peroxidation
03 medical and health sciences
chemistry.chemical_compound
Animals
Organic matter
Effluent
030304 developmental biology
0105 earth and related environmental sciences
chemistry.chemical_classification
0303 health sciences
biology
fungi
Biological Transport
Cell Biology
General Medicine
Mussel
biology.organism_classification
Zinc Sulfate
Bioavailability
chemistry
Environmental chemistry
Zinc Oxide
Surface water
Biomarkers
Water Pollutants, Chemical
Subjects
Details
- ISSN :
- 15320456
- Volume :
- 219
- Database :
- OpenAIRE
- Journal :
- Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
- Accession number :
- edsair.doi.dedup.....f36593fa113286cb296746d286d37861