Chronic TiO2 nanoparticle exposure to a benthic organism, Hyalella azteca: impact of solar UV radiation and material surface coatings on toxicity

Wallis, Lindsay K.; Diamond, Stephen A.; Hoff, Dale J.; Al-Abed, Souhail R.; Li, Shibin

doi:10.1016/j.scitotenv.2014.08.068

Cited by 17 publications

(8 citation statements)

References 39 publications

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“…The concentration of TiO 2 NPs (20 and 300 nm) released from painted facades was reported to be as high as 3.5 × 10 8 particles/L in runoff water (Kaegi et al, 2008). Much attention has been devoted to the risk of increased TiO 2 NP release on various ecosystems (Cañas-Carrell et al, 2011;Li et al, 2014aLi et al, , 2014bWallis et al, 2014). Importantly, recent eco-toxicological data showed that TiO 2 NPs were toxic to marine organisms, such as invertebrates (Barmo et al, 2013;Canesi et al, 2010;Zhu et al, 2011aZhu et al, , 2011b, cyanobacteria (Cherchi and Gu, 2010), and polychaetes (Galloway et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Interaction of TiO 2 nanoparticles with the marine microalga Nitzschia closterium : Growth inhibition, oxidative stress and internalization

Xia

Chen

Sun

et al. 2015

Science of The Total Environment

223

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Section: Introductionmentioning

confidence: 99%

Interaction of TiO 2 nanoparticles with the marine microalga Nitzschia closterium : Growth inhibition, oxidative stress and internalization

Xia

Chen

Sun

et al. 2015

Science of The Total Environment

223

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“…Recent studies have investigated the impacts of TiO2NP on aquatic organisms such as fish, pelagic and benthic invertebrates (Wallis et al, 2014;Li et al, 2014 a, b, c). Mussels live at the sediment/water interphase and filter large volumes of water, colloids and suspended matter.…”

Section: Introductionmentioning

confidence: 99%

The impact of TiO2 nanoparticles on uptake and toxicity of benzo(a)pyrene in the blue mussel (Mytilus edulis)

Farkas

Bergum

Nilsen

et al. 2015

Science of The Total Environment

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Nanoparticles are emerging contaminants of concern. Knowledge on their environmental impacts is scarce, especially on their interactive effects with other contaminants. In this study we investigated effects of titanium dioxide nanoparticles (TiO2NP) on the blue mussel (Mytilus edulis) and determined their influence on the bioavailability and toxicity of benzo(a)pyrene (B(a)P), a carcinogenic polyaromatic hydrocarbon (PAH). Blue mussels were exposed to either TiO2NP (0.2 and 2.0 mg L -1 ) or B(a)P (20 µg L -1 ) and to the respective combinations of these two compounds. Aqueous contaminant concentrations, the uptake of Ti and B(a)P into mussel soft tissue, effects on oxidative stress and chromosomal damage were analyzed. The uncoated TiO2NP agglomerated rapidly in the seawater. The presence of TiO2NP significantly reduced the bioavailability of B(a)P, shown by lowered B(a)P concentrations in exposure tanks and in mussel tissue. The activities of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) were impacted by the various exposures regimes, indicating oxidative stress in the contaminant exposure groups. While SOD activity was increased only in the 0.2TiO2NP exposure group, CAT activity was enhanced in both combined exposure groups.The GPx activity was increased only in the groups exposed to the two single compounds. In hemocytes, increased chromosomal damage was detected in mussels exposed to the single compounds, which was further increased after exposure to the combination of compounds. In this study we show that the presence of TiO2NP in the exposure system reduced B(a)P uptake in blue mussels. However, since most biomarker responses did not decrease despite lower B(a)P uptake in combined exposures, the results suggest that TiO2NP can act as additional stressor, or potentially alters B(a)P toxicity by activation.

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“…Thus, it can be expected that the pollution rather accumulates in the area of discharge from which they have been swept away before. Sediments can act as sink and source for pollutants, and thus play an important role for environmental assessment (Ahlf et al, 2002;Gerbersdorf et al, 2005;Hilscherova et al, 2007;Hollert et al, 2003;Li et al, 2014a,b;Wallis et al, 2014;Wölz et al, 2009). The Yangtze River is one of the largest sediment carriers in the world, and about 60 to 68% of the sediment materials that entered the TGR from upstream have been trapped annually since the operation of the dam, which account for annually 151 to 172 Mt between 2003 and 2008 during the impoundment Yang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Linking Ah receptor mediated effects of sediments and impacts on fish to key pollutants in the Yangtze Three Gorges Reservoir, China — A comprehensive perspective

Floehr

Scholz-Starke

Xiao

et al. 2015

Science of The Total Environment

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Chronic TiO2 nanoparticle exposure to a benthic organism, Hyalella azteca: impact of solar UV radiation and material surface coatings on toxicity

Cited by 17 publications

References 39 publications

Interaction of TiO 2 nanoparticles with the marine microalga Nitzschia closterium : Growth inhibition, oxidative stress and internalization

Interaction of TiO 2 nanoparticles with the marine microalga Nitzschia closterium : Growth inhibition, oxidative stress and internalization

The impact of TiO2 nanoparticles on uptake and toxicity of benzo(a)pyrene in the blue mussel (Mytilus edulis)

Linking Ah receptor mediated effects of sediments and impacts on fish to key pollutants in the Yangtze Three Gorges Reservoir, China — A comprehensive perspective

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