Feckler, Alexander
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
Sammanfattning
In aquatic ecosystems, titanium dioxide nanoparticles (nano-TiO2) may adsorb co-occurring chemical stressors, such as copper (Cu). This interaction has the potential to reduce the concentration of dissolved Cu due to surface binding to the nanoparticles. The subsequent sedimentation of nano-TiO2 agglomerates may increase the exposure of benthic species towards the associated Cu. This scenario was assessed by employing the amphipod Gammarus fossarum as model species and taking advantage of a 2 x 2-factorial design investigating absence and presence of 2 mg nano-TiO2/L and 40 mu g Cu/L (n = 45; t= 24 d) in darkness, respectively. Nano-TiO2 alone did not affect mortality and leaf consumption, whereas Cu alone caused high mortality (>70%), reduced leaf consumption (25%) and feces production (30%) relative to the control. In presence of nano-TiO2, Cu-induced toxicity was largely eliminated. However, independent of Cu, nano-TiO2 decreased the gammarids' assimilation and weight. Hence, nano-TiO2 may be applicable as Cu-remediation agent, while its potential long-term effects need further attention. (C) 2015 Elsevier B.V. All rights reserved.
Nyckelord
Heavy metal; Benthic invertebrates; Energy processing; Remediation; Combined toxicity
Publicerad i
Aquatic Toxicology
2015, volym: 165, sidor: 154-159
Utgivare: ELSEVIER SCIENCE BV
SLU författare
Bundschuh, Mirco
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
Globala målen (SDG)
SDG3 God hälsa och välbefinnande
UKÄ forskningsämne
Annan biologi
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.aquatox.2015.05.011
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/68251