Your browser doesn't support javascript.
loading
Trophic Transfer and Accumulation of Multiwalled Carbon Nanotubes in the Presence of Copper Ions in Daphnia magna and Fathead Minnow (Pimephales promelas).
Cano, Amanda M; Maul, Jonathan D; Saed, Mohammad; Irin, Fahmida; Shah, Smit A; Green, Micah J; French, Amanda D; Klein, David M; Crago, Jordan; Cañas-Carrell, Jaclyn E.
Afiliación
  • Cano AM; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
  • Maul JD; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
  • Saed M; Department of Electrical and Computer Engineering, Texas Tech University , Lubbock, Texas United States.
  • Irin F; Department of Chemical Engineering, Texas Tech University , Lubbock, Texas United States.
  • Shah SA; Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas United States.
  • Green MJ; Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas United States.
  • French AD; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
  • Klein DM; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
  • Crago J; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
  • Cañas-Carrell JE; Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University , Lubbock, Texas United States.
Environ Sci Technol ; 52(2): 794-800, 2018 01 16.
Article en En | MEDLINE | ID: mdl-29261302
The increase in use of nanomaterials such as multiwalled carbon nanotubes (MWCNTs) presents a need to study their interactions with the environment. Trophic transfer was measured between Daphnia magna and Pimephales promelas (fathead minnow, FHM) exposed to MWCNTs with different outer diameter (OD) sizes (MWCNT1 = 8-15 nm OD and MWCNT2 = 20-30 nm OD) in the presence and absence of copper. Pristine FHM were fed D. magna, previously exposed for 3 d to MWCNT1 or MWCNT2 (0.1 mg/L) and copper (0.01 mg/L), for 7 d. D. magna bioaccumulated less MWCNT1 (0.02 µg/g) than MWCNT2 (0.06 µg/g), whereas FHM accumulated more MWCNT1 (0.81 µg/g) than MWCNT2 (0.04 µg/g). In the presence of copper, MWCNT bioaccumulation showed an opposite trend. Mostly MWCNT1 (0.03 µg/g) bioaccumulated in D. magna, however less MWCNT1 (0.21 µg/g) than MWCNT2 (0.32 µg/g) bioaccumulated in FHM. Bioaccumulation factors were higher for MWCNT1s than MWCNT2. However, an opposite trend was observed when copper was added. Plasma metallothionein-2 was measured among treatments; however concentrations were not statistically different from the control. This study demonstrates that trophic transfer of MWCNTs is possible in the aquatic environment and further exploration with mixtures can strengthen the understanding of MWCNT environmental behavior.
Asunto(s)
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Cyprinidae / Nanotubos de Carbono Límite: Animals Idioma: En Revista: Environ Sci Technol Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Cyprinidae / Nanotubos de Carbono Límite: Animals Idioma: En Revista: Environ Sci Technol Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos