Calculation of the budget of uncertainty on measurements size nanoparticles using dynamic light scattering
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Journal of the Brazilian Chemical Society
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Accurate nanoparticle characterization is essential since it can significantly affect its
physicochemical and biological properties. Among physicochemical properties used to characterize
nanomaterials, size and size distribution are essential and should be assessed before surveying
poisonousness or biocompatibility. Several methods are suitable to evaluate these characteristics
including the dynamic light scattering. The aims of the present paper were to propose a methodology
to measure nanoparticle size and present the estimation of the particle size uncertainty using the
dynamic light scattering technique. The reliability of measurements was ensured by a series of
handling precautions and quality criteria for good measurements to be applied for methodology
validation using reference material polyvinylpyrrolidone coated silver nanoparticles. The
identification and quantification of input quantities to the measurement uncertainties were estimated.
The uncertainty concerning the equipment was 1.2% while the repeatability obtained was 1.4%,
within the range of values stipulated in the reference standard (less than 5%). The relative standard
uncertainties of trueness and repeatability were below the thresholds defined by the International
Organization for Standardization. The result of the expanded uncertainty was 3.9% with 95%
coverage probability for the reference material.
Como referenciar
GERALDES, ADRIANA N.; ROSERO, WILMMER A.A.; ROSTELATO, MARIA E.C.M.; SARKIS, JORGE E.S. Calculation of the budget of uncertainty on measurements size nanoparticles using dynamic light scattering. Journal of the Brazilian Chemical Society, v. 35, n. 8, p. 1-10, 2024. DOI: 10.21577/0103-5053.20240039. Disponível em: https://repositorio.ipen.br/handle/123456789/48046. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.