The influence of dissolved and surface-bound humic acid on the toxicity of TiO2 nanoparticles to Chlorella sp.

Adams, 2006, Comparative eco-toxicity of nanoscale TiO2, SiO2, and ZnO water suspensions, Water Res., 40, 3527, 10.1016/j.watres.2006.08.004

Aiken, 2011, Influence of dissolved organic matter on the environmental fate of metals, nanoparticles, and colloids, Environ. Sci. Technol., 45, 3196, 10.1021/es103992s

Asli, 2009, Colloidal suspensions of clay or titanium dioxide nanoparticles can inhibit leaf growth and transpiration via physical effects on root water transport, Plant Cell Environ., 32, 577, 10.1111/j.1365-3040.2009.01952.x

Aruoja, 2009, Toxicity of nanoparticles of CuO, ZnO and TiO2 to microalgae Pseudokirchneriella subcapitata, Sci. Total Environ., 407, 1461, 10.1016/j.scitotenv.2008.10.053

Botta, 2011, TiO2-based nanoparticles released in water from commercialized sunscreens in a life-cycle perspective: structures and quantities, Environ. Pollut., 159, 1543, 10.1016/j.envpol.2011.03.003

Calabrese, 2003, Toxicology rethinks its central belief: Hormesis demands a reappraisal of the way risks are assessed, Nature, 421, 691, 10.1038/421691a

Campinas, 2006, The ionic strength effect on microcystin and natural organic matter surrogate adsorption onto PAC, J. Colloid Interface Sci., 299, 520, 10.1016/j.jcis.2006.02.042

Chappell, 2009, Surfactive stabilization of multi-walled carbon nanotube dispersions with dissolved humic substances, Environ. Pollut., 157, 1081, 10.1016/j.envpol.2008.09.039

Chen, 2011, Effect of natural organic matter on toxicity and reactivity of nano-scale zero-valent iron, Water Res., 45, 1995, 10.1016/j.watres.2010.11.036

Dabrunz, 2011, Biological surface coating and molting inhibition as mechanisms of TiO2 nanoparticle toxicity in Daphnia magna, Plos One, 6, e20112, 10.1371/journal.pone.0020112

Dasari, 2010, The effect of humic acids on the cytotoxicity of silver nanoparticles to a natural aquatic bacterial assemblage, Sci. Total Environ., 408, 5817, 10.1016/j.scitotenv.2010.08.030

Fabrega, 2009, Silver nanoparticle impact on bacterial growth: effect of pH, concentration, and organic matter, Environ. Sci. Technol., 43, 7285, 10.1021/es803259g

Gao, 2009, Dispersion and toxicity of selected manufactured nanomaterials in natural river water samples: effect of water chemical composition, Environ. Sci. Technol., 43, 3322, 10.1021/es803315v

Gottschalk, 2011, The release of engineered nanomaterials to the environment, J. Environ. Monit., 13, 1145, 10.1039/c0em00547a

Gottschalk, 2009, Modeled environmental concentrations of engineered nanomaterials (TiO2, ZnO, Ag, CNT, fullerenes) for different regions, Environ. Sci. Technol., 43, 9216, 10.1021/es9015553

Gurr, 2005, Ultrafine titanium dioxide particles in the absence of photoactivation can induce oxidative damage to human bronchial epithelial cells, Toxicology, 213, 66, 10.1016/j.tox.2005.05.007

Hartmann, 2010, Algal testing of titanium dioxide nanoparticles - Testing considerations, inhibitory effects and modification of cadmium bioavailability, Toxicology, 269, 190, 10.1016/j.tox.2009.08.008

Hund-Rinke, 2006, Ecotoxic effect of photocatalytic active nanoparticles TiO2 on algae and daphnids, Environ. Sci. Pollut. Res., 13, 225, 10.1065/espr2006.06.311

Hyung, 2008, Natural organic matter (NOM) adsorption to multi-walled carbon nanotubes: effect of NOM characteristics and water quality parameters, Environ. Sci. Technol., 42, 4416, 10.1021/es702916h

Jiang, 2011, Toxicological assessment of TiO2 nanoparticles by recombinant Escherichia coli bacteria, J. Environ. Monit., 13, 42, 10.1039/C0EM00499E

Ji, 2011, Toxicity of oxide nanoparticles to the green algae Chlorella sp, Chem. Eng. J., 170, 525, 10.1016/j.cej.2010.11.026

Kang, 2008, Humic acid fractionation upon sequential adsorption onto goethite, Langmuir, 24, 2525, 10.1021/la702914q

Karasyova, 2007, Natural organic matter differently modulates growth of two closely related coccal green algal species, Environ. Sci. Pollut. Res., 14, 88, 10.1065/espr2006.06.317

Klaine, 2008, Nanomaterials in the environment: Behavior, fate, bioavailability and effects, Environ. Toxicol. Chem., 27, 1825, 10.1897/08-090.1

Lee, 2011, Biotoxicity of nanoparticles: effect of natural organic matter, J. Nanopart. Res., 13, 3051, 10.1007/s11051-010-0204-z

Li, 2008, Effect of soil sorption and aquatic natural organic matter on the antibacterial activity of a fullerene water suspension, Environ. Toxicol. Chem., 27, 1888, 10.1897/07-548.1

Li, 2010, Adsorbed polymer and NOM limits adhesion and toxicity of nano scale zerovalent iron to E. coli, Environ. Sci. Technol., 44, 3462, 10.1021/es9031198

Lin, 2009, The effect of ionic strength and pH on the stability of tannic acid-facilitated carbon nanotube suspensions, Carbon, 47, 2875, 10.1016/j.carbon.2009.06.036

Lin, 2010, Fate and transport of engineered nanomaterials in the environment, J. Environ. Qual., 39, 1896, 10.2134/jeq2009.0423

Liu, 2008, Coating Fe3O4 Magnetic nanoparticles with humic acid for high efficient removal of heavy metals in water, Environ. Sci. Technol., 42, 6949, 10.1021/es800924c

Maynard, 2011, Don’t define nanomaterials, Nature, 475, 31, 10.1038/475031a

Menard, 2011, Ecotoxicity of nanosized TiO2: review of in vivo data, Environ. Pollut., 159, 677, 10.1016/j.envpol.2010.11.027

Mohammed Sadiq, 2011, Ecotoxicity study of titania (TiO2) NPs on two microalgae species: Scenedesmus sp. and Chlorella sp, Ecotoxic. Environ. Safety, 74, 1180, 10.1016/j.ecoenv.2011.03.006

Nel, 2006, Toxic potential of materials at the nanolevel, Science, 311, 622, 10.1126/science.1114397

Phenrat, 2010, Estimating attachment of nano- and submicrometer-particles coated with organic macromolecules in porous media: development of an empirical model, Environ. Sci. Technol., 44, 4531, 10.1021/es903959c

Saleh, 2010, Influence of biomacromolecules and humic acid on the aggregation kinetics of single-walled carbon nanotubes, Environ. Sci. Technol., 44, 2412, 10.1021/es903059t

Schwab, 2011, Are carbon nanotube effects on green algae caused by shading and agglomeration?, Environ. Sci. Technol., 45, 6136, 10.1021/es200506b

Sharma, 2009, Aggregation and toxicity of titanium dioxide nanoparticles in aquatic environment – a review, J. Environ. Sci. Health Part A, 44, 1485, 10.1080/10934520903263231

Steinberg, 2008, Humic substances Part 2: interactions with organisms, Environ. Sci. Pollut. Res., 15, 128, 10.1065/espr2007.07.434

Timofeyev, 2007, Natural organic matter (NOM) has the potential to modify the multixenobiotic resistance (MXR) activity in freshwater amphipods Eulimnogammarus cyaneus and E. verrucosus, Comp. Biochem. Phys. B, 146, 49, 10.1016/j.cbpb.2006.11.017

Van Hoecke, 2011, Aggregation and ecotoxicity of CeO2 nanoparticles in synthetic and natural water with variable pH, organic matter concentration and ionic strength, Environ. Pollut., 159, 970, 10.1016/j.envpol.2010.12.010

Wang, 2008, Sorption of organic contaminants by carbon nanotubes: influence of adsorbed organic matter, Environ. Sci. Technol., 42, 3207, 10.1021/es702971g

Wang, 2011, Toxicity and internalization of CuO nanoparticles to prokaryotic alga Microcystis aeruginosa as affected by dissolved organic matter, Environ. Sci. Technol., 45, 6032, 10.1021/es2010573

Warheit, 2007, Pulmonary toxicity study in rats with three forms of ultrafine-TiO2 particles: Differential responses related to surface properties, Toxicology, 230, 90, 10.1016/j.tox.2006.11.002

Yang, 2009, Interactions of humic acid with nanosized inorganic oxides, Langmuir, 25, 3571, 10.1021/la803701b