Journal ArticleDOI
Hydrodynamic chromatography online with single particle-inductively coupled plasma mass spectrometry for ultratrace detection of metal-containing nanoparticles.
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TLDR
This study reports on the development of a hyphenated analytical technique for the detection and characterization of metal-containing NPs, i.e., their metal mass fraction, size, and number concentration.Abstract:
Nanoparticle (NP) determination has recently gained considerable interest since a growing number of engineered NPs are being used in commercial products. As a result, their potential to enter the environment and biological systems is increasing. In this study, we report on the development of a hyphenated analytical technique for the detection and characterization of metal-containing NPs, i.e., their metal mass fraction, size, and number concentration. Hydrodynamic chromatography (HDC), suitable for sizing NPs within the range of 5 to 300 nm, was coupled online to inductively coupled plasma mass spectrometry (ICPMS), providing for an extremely selective and sensitive analytical tool for the detection of NPs. However, a serious drawback when operating the ICPMS in its conventional mode is that it does not provide data regarding NP number concentrations and, thus, any information about the metal mass fraction of individual NPs. To address this limitation, we developed single particle (SP) ICPMS coupled onlin...read more
Citations
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Journal ArticleDOI
Single particle inductively coupled plasma mass spectrometry: a powerful tool for nanoanalysis.
TL;DR: Although the number of applications reported to date is limited, the relatively simple instrumental requirements, the low number concentration detection levels attainable, and the possibility to detect both the presence of dissolved and particulate forms of an element make this methodology very promising in the nanoscience related areas.
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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.
Journal ArticleDOI
Nanopesticides: guiding principles for regulatory evaluation of environmental risks.
Rai S. Kookana,Alistair B.A. Boxall,Philip T. Reeves,Roman Ashauer,Sabine Beulke,Qasim Chaudhry,Geert Cornelis,Teresa F. Fernandes,Jay Gan,Melanie Kah,Iseult Lynch,James F. Ranville,Chris J. Sinclair,David J. Spurgeon,Karen Tiede,Paul J. Van den Brink +15 more
TL;DR: The main focus is on assessing whether the presence of the nanoformulation introduces potential differences relative to the conventional active ingredients, and the proposed changes in the test methodology, research priorities, and recommendations would facilitate the development of regulatory approaches and a regulatory framework for nanopesticides.
Journal ArticleDOI
Understanding the fate and biological effects of Ag- and TiO2-nanoparticles in the environment: The quest for advanced analytics and interdisciplinary concepts
Gabriele E. Schaumann,Allan Philippe,Mirco Bundschuh,Mirco Bundschuh,George Metreveli,Sondra Klitzke,Sondra Klitzke,Denis Rakcheev,Alexandra Grün,Samuel K. Kumahor,Melanie Kühn,Thomas Baumann,Friederike Lang,Werner Manz,Ralf Schulz,Hans-Jörg Vogel,Hans-Jörg Vogel +16 more
TL;DR: This review critically evaluates existing knowledge on colloidal aging mechanisms, biological functioning and transport of Ag NP and TiO2 NP in water and soil and it discusses challenges for concepts, experimental approaches and analytical methods in order to obtain a comprehensive understanding of the processes linking NP fate and effects.
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Atomic spectrometry update – a review of advances in environmental analysis
TL;DR: The 30th annual review of the application of atomic spectrometry to the chemical analysis of environmental samples was published in 2014 as discussed by the authors, which refers to papers published approximately between August 2013 and July 2014 and continues the series of Atomic Spectrometry Updates (ASUs) in environmental analysis.
References
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Journal ArticleDOI
Nanoparticle Silver Released into Water from Commercially Available Sock Fabrics
Troy M. Benn,Paul Westerhoff +1 more
TL;DR: Variable leaching rates among sock types suggests that the sock manufacturing process may control the release of silver, and physical separation and ion selective electrode (ISE) analyses suggest that both colloidal and ionic silver leach from the socks.
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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.
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Impact of Environmental Conditions (pH, Ionic Strength, and Electrolyte Type) on the Surface Charge and Aggregation of Silver Nanoparticles Suspensions
Amro El Badawy,Todd P. Luxton,Rendahandi G. Silva,Kirk G. Scheckel,Makram T. Suidan,Thabet Tolaymat +5 more
TL;DR: The impact of capping agents and environmental conditions (pH, ionic strength, and background electrolytes) on surface charge and aggregation potential of silver nanoparticles (AgNPs) suspensions were investigated.
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The ecotoxicology of nanoparticles and nanomaterials: current status, knowledge gaps, challenges, and future needs
TL;DR: A special issue on the ecotoxicology and environmental chemistry of nanoparticles (NPs), and nanomaterials (NMs), was published in this paper, with a focus on the effects of pollution on NPs.
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Detection and characterization of engineered nanoparticles in food and the environment
TL;DR: An overview of the characteristics of nanoparticles that could affect their behaviour and toxicity, as well as techniques available for their determination are provided, which could be optimized to provide the necessary information.