| Toxicity of silicon carbide nanowires to sediment-dwelling invertebrates in water or sediment exposures. | |
| | |
MedLine Citation:
|
PMID: 21305577 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Silicon carbide nanowires (SiCNW) are insoluble in water. When released into an aquatic environment, SiCNW would likely accumulate in sediment. The objective of this study was to assess the toxicity of SiCNW to four freshwater sediment-dwelling organisms: amphipods (Hyalella azteca), midges (Chironomus dilutus), oligochaetes (Lumbriculus variegatus), and mussels (Lampsilis siliquoidea). Amphipods were exposed to either sonicated or nonsonicated SiCNW in water (1.0 g/L) for 48 h. Midges, mussels, and oligochaetes were exposed only to sonicated SiCNW in water for 96 h. In addition, amphipods were exposed to sonicated SiCNW in whole sediment for 10 d (44% SiCNW on dry wt basis). Mean 48-h survival of amphipods exposed to nonsonicated SiCNW in water was not significantly different from the control, whereas mean survival of amphipods exposed to sonicated SiCNW in two 48-h exposures (0 or 15% survival) was significantly different from the control (90 or 98% survival). In contrast, no effect of sonicated SiCNW was observed on survival of midges, mussels, or oligochaetes. Survival of amphipods was not significantly reduced in 10-d exposures to sonicated SiCNW either mixed in the sediment or layered on the sediment surface. However, significant reduction in amphipod biomass was observed with the SiCNW either mixed in sediment or layered on the sediment surface, and the reduction was more pronounced for SiCNW layered on the sediment. These results indicated that, under the experimental conditions, nonsonicated SiCNW in water were not acutely toxic to amphipods, sonicated SiCNW in water were acutely toxic to the amphipods, but not to other organisms tested, and sonicated SiCNW in sediment affected the growth but not the survival of amphipods.Environ. Toxicol. Chem. © 2011 SETAC. |
| | |
Authors:
|
Joseph N Mwangi; Ning Wang; Andrew Ritts; James L Kunz; Christopher G Ingersoll; Hao Li; Baolin Deng |
Related Documents
:
|
16551107 - Dynamics of proteins encapsulated in silica sol-gel glasses studied with ir vibrational... 20621457 - Effect of porous silica on sustained release behaviors of ph sensitive pluronic f127/po... 16383387 - Simple tools for complex phenomena: viscoelastic phase separation captured by disconnec... 488767 - Water-holding by dietary fibre in vitro and its relationship to faecal output in man. 17706767 - In vivo biological evaluation of high molecular weight hyperbranched polyglycerols. 23057647 - Does fluoromethane form a hydrogen bond with water? |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-1-20 |
Journal Detail:
|
Title: Environmental toxicology and chemistry / SETAC Volume: - ISSN: 1552-8618 ISO Abbreviation: - Publication Date: 2011 Jan |
Date Detail:
|
Created Date: 2011-2-9 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8308958 Medline TA: Environ Toxicol Chem Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 SETAC. |
Affiliation:
|
Department of Civil and Environmental Engineering, University of Missouri, Columbia, Missouri, USA; U.S. Geological Survey, Columbia Environmental Research Center, Columbia, Missouri. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Influence of historical industrial epochs on pore water and partitioning profiles of polycyclic arom...
Next Document: Mercury speciation and biomagnification in the food web of Caddo Lake (TX/LA, USA), a subtropical fr...