<35 μM), there is a small trend towards a lower ζ-potential during the first 7 days; however, this trend is not evident (statistically significant) for the larger concentrations.
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Influence of organic molecules on the aggregation of TiO<sub>2</sub> nanoparticles in acidic conditions.
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The sentences
However, after equilibration for 24 h, there was a clear trend of increased amount of adsorption as the ligand concentration increased.