Search results - 117 results
Method development for analysis of nanoplastics in drinking water and milk using transmission electron microscopy (TEM)
energy-dispersive X-ray spectroscopy (STEM- EDX) allowed differentiating plastic particles from mineral contaminants on the grid by their elemental composition. The limit of detection, determined by the sample ...
Advances in monitoring-centered quantification of microcystins in fish matrix using UHPLC-MS/MS
by the muscle tissues of different fish species. Eventually, the validation of the method was achieved for the muscle tissue of all fish species and cod liver. A limit of quantification (LOQ) of 5 µg ...
A comparison of COVID-19 incidence rates across six European countries in 2021.
surveillance systems were detected. Results showed wide variations in testing rates, access to free testing and the types of tests recorded in national databases, which may substantially limit incidence ...
Pyrogen testing of phage therapeutic products
is pivotal to limit the risk of non-endotoxin contamination. These pyrogens can be detected by the monocyte activation test (MAT), which employs human blood cells to quantify pyrogenicity in vitro. In ...
Release of silver and titanium from face masks traded for the general population.
being detected in all face masks, only in one mask Ti was measured in detectable concentrations in artificial sweat (0.35 % of total Ti content). Comparison of leachable Ag and Ti with respective ...
Assessment of the clinical and analytical performance of the Aptima SARS-CoV-2 assay using the VALCOR protocol.
of 180 clinical samples were tested with an addition of 40 diluted clinical specimens to determine the limit of detection. When compared to the standard comparator assay Aptima had a sensitivity of ...
Development of strain-level shotgun metagenomics approaches to detect and characterize microbiological contaminants in the context of food safety
Ultimately, a validation of the method is still necessary in order to obtain a precise limit of detection based on the analysis of a large dataset of samples. Moreover, other technologies can still be ...
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 ...
Cyanotoxins and Food Contamination in Developing Countries: Review of Their Types, Toxicity, Analysis, Occurrence and Mitigation Strategies
the detection of microcystins using different analytical methods. The detected levels mostly surpassed the provisional tolerable daily intake limit set by the World Health Organization, indicating ...
Ultrastable Silver Nanoparticles for Rapid Serology Detection of Anti-SARS-CoV-2 Immunoglobulins G.
nanoparticles, our AgNP-based system constitutes a clear step forward, as the limit of detection for Anti- SARS-CoV-2 IgG was reduced by 1 order of magnitude and similar signals were observed with 10 times fewer ...