Several techniques are used to measure the concentration of nanoparticles, including:
Spectroscopy: UV-Vis spectroscopy can determine the concentration by measuring the absorbance of light at specific wavelengths. Dynamic Light Scattering (DLS): This method can estimate particle size and concentration based on the scattering of light. Atomic Absorption Spectroscopy (AAS): Used for measuring metal nanoparticles by analyzing the absorption of light.