Journal ArticleDOI
Measurement of nanoparticles by light-scattering techniques
Satinder Kaur Brar,M. Verma +1 more
Reads0
Chats0
TLDR
In this paper, a review of light-scattering techniques, including their theory, practice and real-world use in determination of nanoparticles in environmental and food applications is presented.Abstract:
Nanoparticles (NPs), due to their unique physical and chemical properties, especially their minute particle size (⩽100 nm), find applications in numerous industrial, commercial and consumer products. After their end-user applications, these NPs find their way into the environment and food products. The NPs so discharged need to be quantified accurately to determine their toxicity and exposure levels. At this time, there is a need to develop a unified method for their determination. There are plenty of techniques available in the market that were initially used for colloidal particles (e.g., microscopy, spectroscopy and the recent addition of magnetic resonance), but each of these techniques has a certain degree of uncertainty. Further, sample homogeneity, sample preparation, instrument-operating procedures, and statistical practices are likely to add to the complexity of the problem. In this context, this review attempts to understand the widely-used light-scattering techniques, including their theory, practice and real-world use in determination of NPs in environmental and food applications.read more
Citations
More filters
Journal ArticleDOI
Techniques for physicochemical characterization of nanomaterials
TL;DR: This review summarizes the techniques that are commonly used to study the size, shape, surface properties, composition, purity and stability of nanomaterials, along with their advantages and disadvantages.
Journal ArticleDOI
Polymeric nanoparticles: production, characterization, toxicology and ecotoxicology
Aleksandra Zielińska,Filipa Carreiró,Ana Oliveira,Andreia Neves,Bárbara Pires,D. Nagasamy Venkatesh,Alessandra Durazzo,Massimo Lucarini,Piotr Eder,Amélia M. Silva,Antonello Santini,Eliana B. Souto +11 more
TL;DR: The most commonly used methods for the production and characterization of polymeric NPs are discussed, the association efficiency of the active compound to the polymeric core, and the in vitro release mechanisms are discussed.
Journal ArticleDOI
Nanopesticides: State of Knowledge, Environmental Fate, and Exposure Modeling
TL;DR: The present analysis provides a useful framework to identify priorities for future research in order to achieve more robust risk assessments of nanopesticides.
Journal ArticleDOI
Detection limits of DLS and UV-Vis spectroscopy in characterization of polydisperse nanoparticles colloids
Emilia Tomaszewska,Katarzyna Soliwoda,Kinga Kadziola,Beata Tkacz-Szczesna,Grzegorz Celichowski,Michał Cichomski,Witold Szmaja,Jaroslaw Grobelny +7 more
TL;DR: In this article, the size and size distribution of artificially prepared polydisperse silver nanoparticles (NPs) colloids were studied using dynamic light scattering (DLS) and ultraviolet-visible (UV-Vis) spectroscopy.
Journal ArticleDOI
Detection, characterization and quantification of inorganic engineered nanomaterials: A review of techniques and methodological approaches for the analysis of complex samples
Francisco Laborda,Eduardo Bolea,Gemma Cepriá,Maria T. Gomez,María S. Jiménez,Josefina Pérez-Arantegui,Juan R. Castillo +6 more
TL;DR: This review presents and discusses the state-of-the-art analytical techniques and sample preparation methods suitable for dealing with complex samples, and single- and multi-method approaches applied to solve the nanometrological challenges posed by a variety of stakeholders.
References
More filters
Book
Science of fullerenes and carbon nanotubes
TL;DR: In this paper, the authors present a detailed overview of the properties of Fullerenes and their properties in surface science applications, such as scanning tunnel microscopy, growth and fragmentation studies, and chemical synthesis.
Journal ArticleDOI
Nanomaterials in the environment: Behavior, fate, bioavailability, and effects
Stephen J. Klaine,Pedro J. J. Alvarez,Graeme E. Batley,Teresa F. Fernandes,Richard D. Handy,Delina Y. Lyon,Shaily Mahendra,Mike J. McLaughlin,Jamie R. Lead +8 more
TL;DR: This review critiques existing nanomaterial research in freshwater, marine, and soil environments and illustrates the paucity of existing research and demonstrates the need for additional research.
Book
Scattering, Absorption, and Emission of Light by Small Particles
TL;DR: In this paper, the basic theory of Electromagnetic Scattering, Absorption, and Emission was presented, and the T-matrix method and Lorenz-Mie theory were used to calculate and measure the scattering and absorption properties of small particles.
Journal ArticleDOI
Chemically functionalized carbon nanotubes.
TL;DR: In this paper, covalent modification schemes allow persistent alteration of the electronic properties of the tubes, as well as to chemically tailor their surface properties, whereby new functions can be implemented that cannot otherwise be acquired by pristine nanotubes.
Journal ArticleDOI
Applications and implications of nanotechnologies for the food sector
Qasim Chaudhry,Michael J. Scotter,James Blackburn,B. Ross,Alistair B.A. Boxall,Laurence Castle,Robert Aitken,Richard W. Watkins +7 more
TL;DR: The toxicological nature of hazard, likelihood of exposure and risk to consumers from nanotechnology-derived food/food packaging are largely unknown and this review highlights major gaps in knowledge that require further research.