Impacts of dissolved organic matter on aqueous behavior of nano/micron-titanium nitride and their induced enzymatic/non-enzymatic antioxidant activities in Scenedesmus obliquus.
Freshwater dispersion stability and ecotoxicological effects of titanium nitride (TiN) with particle size of 20 nm, 50 nm, and 2-10 μm in the presence of dissolved organic matter (DOM) at various concentrations were studied. The TiN particles that had a more negative zeta potential and smaller hydrodynamic size showed more stable dispersion in an aqueous medium when DOM was present than when DOM was absent. Biochemical assays indicated that relative to the control, the TiN particles in the presence of DOM alleviated to some extent the antioxidative stress enzyme activity in Scenedesmus obliquus. In addition, it was found that the TiN with a primary size of 50 nm at a high concentration presented a significant impact on non-enzymatic antioxidant defense in algal cells.
a Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) , School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing , China.
Xin
X
Zhang
a Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) , School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing , China.
Zhuang
Z
Wang
a Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) , School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing , China.
Se
S
Wang
a Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) , School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing , China.
Hao
H
Fang
a Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) , School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing , China.
Fan
F
Zhang
b School of Environmental Science and Technology , Dalian Maritime University , Dalian , China.
De-Gao
DG
Wang
D005618:Fresh Water; D053768:Metal Nanoparticles / Q000737:chemistry; D010316:Particle Size; D044444:Scenedesmus / Q000187:drug effects* / Q000201:enzymology; D014025:Titanium / Q000737:chemistry / Q000494:pharmacology*; D014874:Water Pollutants, Chemical / Q000494:pharmacology*
D014874:Water Pollutants, Chemical; C041500:titanium nitride; D014025:Titanium
Antioxidative defense; behavior; dissolved organic matter; nanoparticles; titanium nitride