Acute Toxicity of Double-Walled Carbon Nanotubes to Three Aquatic Organisms
Joint Authors
Mamba, Bhekie B.
Lukhele, Lungile P.
Musee, Ndeke
Wepener, Victor
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-18
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
This study investigated the toxicity of double walled carbon nanotubes (DWCNTs) to three aquatic organisms, namely, Pseudokirchneriella subcapitata, Daphnia pulex, and Poecilia reticulata under the influence of exposure media properties specifically the ionic strength and organic matter represented by humic acid.
Results indicated that ionic strength enhanced DWCNTs agglomeration whilst humic acid stabilized the CNTs and in turn inhibited the formation of aggregates.
LC50s for D.
pulex were higher at 2.81 and 4.45 mg/L for pristine and oxidised DWCNTs, respectively; however, P.
reticulata had lower values of 113.64 mg/L and 214.0 mg/L for the same CNTs correspondingly.
P.
subcapitata had EC50s of 17.95 mg/L and 10.93 mg/L for the pristine and oxidised DWCNTs, respectively.
In the presence of humic acid high DWCNTs acute toxicity towards D.
pulex and P.
reticulata was observed but ionic strength led to opposite effect irrespective of DWCNTs form.
Both humic acid and ionic strength shielded the P.
subcapitata from toxic effects of DWCNTs.
Overall, our findings suggest that the toxicity of DWCNTs in the aquatic systems (i) will be dependent on media properties and (ii) is likely to proceed at different rates to organisms at different trophic levels.
American Psychological Association (APA)
Lukhele, Lungile P.& Mamba, Bhekie B.& Musee, Ndeke& Wepener, Victor. 2015. Acute Toxicity of Double-Walled Carbon Nanotubes to Three Aquatic Organisms. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-19.
https://search.emarefa.net/detail/BIM-1068834
Modern Language Association (MLA)
Lukhele, Lungile P.…[et al.]. Acute Toxicity of Double-Walled Carbon Nanotubes to Three Aquatic Organisms. Journal of Nanomaterials No. 2015 (2015), pp.1-19.
https://search.emarefa.net/detail/BIM-1068834
American Medical Association (AMA)
Lukhele, Lungile P.& Mamba, Bhekie B.& Musee, Ndeke& Wepener, Victor. Acute Toxicity of Double-Walled Carbon Nanotubes to Three Aquatic Organisms. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-19.
https://search.emarefa.net/detail/BIM-1068834
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1068834