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- Title
Features of Sizing and Enumeration of Silica and Polystyrene Nanoparticles by Nanoparticle Tracking Analysis (NTA).
- Authors
Usfoor, Zohair; Kaufmann, Katharina; Rakib, Al Shahriar Hossain; Hergenröder, Roland; Shpacovitch, Victoria
- Abstract
Nanoparticle Tracking Analysis (NTA) allows for the simultaneous determination of both size and concentration of nanoparticles in a sample. This study investigates the accuracy of particle size and concentration measurements performed on an LM10 device. For experiments, standard nanoparticles of different sizes composed of two materials with different refractive indices were used. Particle size measurements were found to have a decent degree of accuracy. This fact was verified by the manufacturer-reported particle size—determined by transmission electron microscopy (TEM)—as well as by performed scanning electron microscopy (SEM) measurements. On the other hand, concentration measurements resulted in overestimation of the particle concentration in majority of cases. Thus, our findings confirmed the accuracy of nanoparticle sizing performed by the LM10 instrument and highlighted the overestimation of particle concentration made by this device. In addition, an approach of swift correction of the results of concentration measurements received for samples is suggested in the presented study.
- Subjects
SILICA nanoparticles; PARTICLE size determination; NANOPARTICLE size; TRANSMISSION electron microscopy; SCANNING electron microscopy
- Publication
Sensors (14248220), 2020, Vol 20, Issue 22, p6611
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s20226611