Characterisation of particles in solution - a perspective on light scattering and comparative technologies

Area of Science:

• Materials Science
• Analytical Chemistry
• Nanotechnology

Background:

• Accurate characterization of nanoparticles (NPs) in liquid suspension is crucial for various scientific and regulatory applications.
• Existing technologies for NP analysis present challenges in determining precise size and concentration.
• Understanding measurement uncertainties is key to reliable NP data.

Purpose of the Study:

• To provide a comprehensive overview of state-of-the-art technologies for characterizing nanoparticles in liquid.
• To assess the applicability of different techniques for determining NP size and concentration.
• To identify factors influencing measurement accuracy and areas of uncertainty.

Main Methods:

• Review of current technologies for nanoparticle characterization in liquid suspension.
• Analysis of NP tracking analysis (NTA) and dynamic light scattering (DLS) principles and influencing parameters.
• Inclusion of non-light scattering techniques for NP characterization.

Main Results:

• Detailed description of various NP characterization technologies and their applications.
• Identification of key parameters affecting NP size and concentration measurements by NTA and DLS.
• Analysis of potential sources of uncertainty in NP measurements.

Conclusions:

• The manuscript assists scientists in selecting appropriate NP characterization technologies.
• Provides insights to ensure compliance with regulatory demands for accurate NP data.
• Highlights the importance of understanding measurement principles and limitations.