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Nanoparticle Surface Charge: Zeta Potential
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Nanoparticle Surface Charge: Zeta Potential

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Questions and Answers

What is the most commonly used technique to measure the surface charge of nanoparticles?

  • Hydrophobic interaction chromatography
  • Zeta potential (correct)
  • Octanol-water partitioning
  • Contact angle measurement

    • What is the effect of highly positively- or negatively charged particles on colloidal dispersions?

  • They form stable colloidal dispersions (correct)
  • They have no effect on colloidal dispersions
  • They form unstable colloidal dispersions
  • They increase the hydrophobicity of the nanomaterials

    • What can cause a change in the surface charge density of nanoparticles?

  • Only interactions with biomolecules
  • Neither the external environment nor interactions with biomolecules
  • Only the external environment
  • Both the external environment and interactions with biomolecules (correct)

    • What is a key indicator for colloidal stability?

    <p>Zeta potential</p> Signup and view all the answers

    What dictates the dispersion of nanomaterials in a medium?

    <p>Hydrophobicity</p> Signup and view all the answers

    What is the significance of hydrophobicity in the biological milieu?

    <p>It influences the composition of protein corona</p> Signup and view all the answers

    What is one of the methods to measure the hydrophobicity of nanomaterials?

    <p>Contact angle measurement</p> Signup and view all the answers

    What is the impact of hydrophobicity on the fate of nanomaterials?

    <p>It affects the transport, uptake, toxicity, and fate of nanomaterials</p> Signup and view all the answers

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