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Acute toxicity of double-walled carbon nanotubes to three aquatic organisms

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dc.contributor.author Lukhele, LP
dc.contributor.author Mamba, BB
dc.contributor.author Musee, N
dc.contributor.author Wepener, V
dc.date.accessioned 2016-07-11T10:59:32Z
dc.date.available 2016-07-11T10:59:32Z
dc.date.issued 2015-01
dc.identifier.citation Lukhele, LP, Mamba, BB, Musee, N and Wepener, V. 2015. Acute toxicity of double-walled carbon nanotubes to three aquatic organisms. Journal of Nanomaterials, vol 2015, pp, 1-19 en_US
dc.identifier.issn 1687-4110
dc.identifier.uri http://www.hindawi.com/journals/jnm/2015/219074/
dc.identifier.uri http://hdl.handle.net/10204/8636
dc.description Copyright: 2015 Creative Commons Attribution License en_US
dc.description.abstract 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 exposuremedia 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 4.45mg/L for pristine and oxidised DWCNTs, respectively; however, P. reticulata had lower values of 113.64mg/L and 214.0 mg/L for the same CNTs correspondingly. P. subcapitata had EC50s of 17.95mg/L and 10.93mg/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. en_US
dc.language.iso en en_US
dc.publisher Creative Commons en_US
dc.relation.ispartofseries Workflow;15951
dc.subject Acute toxicity en_US
dc.subject Aquatic Organisms en_US
dc.subject Carbon nanotubes en_US
dc.subject Double-Walled Carbon Nanotubes en_US
dc.subject DWCNTs en_US
dc.title Acute toxicity of double-walled carbon nanotubes to three aquatic organisms en_US
dc.type Article en_US
dc.identifier.apacitation Lukhele, L., Mamba, B., Musee, N., & Wepener, V. (2015). Acute toxicity of double-walled carbon nanotubes to three aquatic organisms. http://hdl.handle.net/10204/8636 en_ZA
dc.identifier.chicagocitation Lukhele, LP, BB Mamba, N Musee, and V Wepener "Acute toxicity of double-walled carbon nanotubes to three aquatic organisms." (2015) http://hdl.handle.net/10204/8636 en_ZA
dc.identifier.vancouvercitation Lukhele L, Mamba B, Musee N, Wepener V. Acute toxicity of double-walled carbon nanotubes to three aquatic organisms. 2015; http://hdl.handle.net/10204/8636. en_ZA
dc.identifier.ris TY - Article AU - Lukhele, LP AU - Mamba, BB AU - Musee, N AU - Wepener, V AB - 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 exposuremedia 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 4.45mg/L for pristine and oxidised DWCNTs, respectively; however, P. reticulata had lower values of 113.64mg/L and 214.0 mg/L for the same CNTs correspondingly. P. subcapitata had EC50s of 17.95mg/L and 10.93mg/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. DA - 2015-01 DB - ResearchSpace DP - CSIR KW - Acute toxicity KW - Aquatic Organisms KW - Carbon nanotubes KW - Double-Walled Carbon Nanotubes KW - DWCNTs LK - https://researchspace.csir.co.za PY - 2015 SM - 1687-4110 T1 - Acute toxicity of double-walled carbon nanotubes to three aquatic organisms TI - Acute toxicity of double-walled carbon nanotubes to three aquatic organisms UR - http://hdl.handle.net/10204/8636 ER - en_ZA


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