Search results - 8 results

Release of silver and titanium from face masks traded for the general population.

present in masks advertised for antimicrobial properties; whereas titanium dioxide (TiO) particles were detected in all the face masks in at least one layer corroborating its widespread use in the textile ...

Application of silver-based biocides in face masks intended for general use requires regulatory control

type(s) and localization of silver-based biocides using electron microscopy based methods. Thirteen of 20 selected masks intended for general use contained detectable amounts of silver ranging from 3 μg to ...

A systematic evaluation of Flow Field Flow Fractionation and single-particle ICP-MS to obtain the size distribution of organo-mineral iron oxyhydroxide colloids.

particle size with high resolution in a 1 mM NHHCO (pH 8.3) background and can detect Fe- NOM complexes <5 nm and organo-mineral FeOx particles ranging 5-300 nm. The sp- ICP- MS method had a size ...

Evaluation of a TEM based Approach for Size Measurement of Particulate (Nano)materials.

study included an assessment of the limit of detection, working range, selectivity, precision, trueness, robustness, and ruggedness. An uncertainty that was associated to intermediate precision in the ...

Evaluation of a TEM based Approach for Size Measurement of Particulate (Nano)materials

detection, working range, selectivity, precision, trueness, robustness, and ruggedness. An uncertainty that was associated to intermediate precision in the range of 1–7% and an expanded measurement uncertainty ...

Short-term biodistribution and clearance of intravenously administered silica nanoparticles

concerns have been raised about potential adverse effects of synthetic amorphous silica, commonly used as food additive (E551), since silica nanoparticles have been detected in food containing E551. We ...

Physical Characterization of Nanomaterials in Dispersion by Transmission Electron Microscopy in a Regulatory Framework

nanomaterial under which it is exposed to in vitro and in vivo test systems are described based on TEM micrographs. Subsequently, a quantitative analysis which includes detection, classification and measurement ...

Evidence for the presence of Legionella bacteriophages in environmental water samples.

Legionella bacteriophages is very promising for future applications such as the development of novel molecular tools, the design of new detection and typing methods, and the bioremediation of this ...

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