Mass analysis is crucial in nanotechnology for several reasons: 1. Verification of Composition: Ensuring that nanoparticles have the correct composition is vital for their intended application. Deviations can impact functionality and safety. 2. Quality Control: Consistent mass and composition are necessary for reproducibility in manufacturing processes. 3. Characterization: Understanding the mass and properties of nanoparticles helps in tailoring them for specific applications. 4. Safety and Environmental Impact: Knowledge about the mass and composition of nanoparticles aids in assessing their potential ecological and health risks.