Direct analysis in real time mass spectrometry (DART-MS) was used to characterize commercial polyurethane (PUR) samples without sample pretreatment. More than 50 substances, such as catalysts, stabilizers, antioxidants, flame retardants, plasticizers, chain extenders, chain terminators, polyols, solvents, degradation products and contaminants, a few of them presumably toxic, were detected and identified in 18 PUR items. The identification of 16 compounds was further confirmed by DART MS/MS experiments. Catalysts were the largest class of compounds detected in the PURs by DART-MS. In each of the 18 PUR samples, at least one catalyst residue was identified. In addition, DART-MS was able to detect the migration of hazardous chemicals from the PURs to other objects. The collision-induced dissociation (CID) properties of two PUR catalysts, such as the protonated bis[2-(dimethylamino)ethyl] ether (DMAEE) and the protonated 2,2-dimorpholinodiethylether (DMDEE), as well as those of two PUR antioxidants (Antioxidant 1135 and Antioxidant 1076), were explored.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00216-017-0553-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Needed: Clear definition and hierarchical integration of motivation constructs.
Behav Brain Sci
January 2025
Swiss National Centre of Competence in Research LIVES, University of Lausanne, Lausanne,
Murayama and Jach offer a thoughtful and timely critique of motivation constructs. We largely concur with their basic premises, but offer additional input and clarification regarding the importance of carefully considering the energization and direction components of motivation, and fully attending to the hierarchical aspect of motivation rather than prioritizing particular levels of analysis.
View Article and Find Full Text PDFPsychosocial Determinants and Outcomes of Expedited Liver Transplant Evaluations: Insights From a Retrospective Cohort Analysis.
Transplant Direct
February 2025
Department of Medicine, UMass Chan Medical School, Worcester, MA.
Background: As the burden of chronic liver disease and the demand for liver transplants (LT) grows, understanding the interplay between access to care and patient outcomes is increasingly important. In this study, we explored patient characteristics and transplant outcomes in patients undergoing LT evaluations, with a focus on identifying risk factors for expedited LT evaluation.
Methods: This single-center retrospective cohort study included patients who underwent LT evaluation for deceased donor LT between October 2017 and July 2021.
DNA Nanotags for Multiplexed Single-Particle Electron Microscopy and Electron Cryotomography.
JACS Au
January 2025
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, CAS, Beijing 100190, China.
DNA nanostructures present new opportunities as Nanotags for electron microscopy (EM) imaging, leveraging their high programmability, unique shapes, biomolecule conjugation capability, and stability compatible with standard cryogenic sample preparation protocols. This perspective highlights the potential of DNA Nanotags to enable high-throughput multiplexed EM analysis and facilitate particle identification for cryogenic electron tomography (cryo-ET). Meanwhile, applying Nanotags in live-cell environments requires the efficient cellular uptake of intact structures and successful cytosolic migration.
View Article and Find Full Text PDFTime trends in health-related quality of life assessment and reporting within publications of oncology randomised phase III trials: a meta-research study.
BMJ Oncol
March 2023
Department of Oncology, University of Turin, at Ordine Mauriziano Hospital, Torino, Italy.
Objective: To assess time trends in the inclusion of health-related quality of life (QoL) among study endpoints and in the reporting of QoL results in study publications, randomised phase III oncology trials published between 2017 and 2021 were compared with the trials published in the previous 5 years.
Methods And Analysis: All issues published between 2012 and 2021 by 11 major journals were handsearched for primary publications of phase III trials in adult patients with solid tumours. Trials published in 2017-2021 were compared with trials published in 2012-2016 for three endpoints: (1) proportion of publications including QoL among endpoints out of all the eligible publications; (2) proportion of publications presenting QoL results out of those including QoL among endpoints and (3) proportion of publications presenting QoL data out of all the eligible publications.
Eosinophils: old cells, new directions.
Front Med (Lausanne)
January 2025
Hospital Universitario de Gran Canaria Dr. Negrín, Respiratory Service, Las Palmas de Gran Canaria, Spain.
Eosinophils are polymorphonuclear cells that have progressively gained attention due to their involvement in multiple diseases and, more recently, in various homeostatic processes. Their well-known roles range from asthma and parasitic infections to less prevalent diseases such as eosinophilic granulomatosis with polyangiitis, eosinophilic esophagitis, and hypereosinophilic syndrome. In recent years, various biological therapies targeting these cells have been developed, altering the course of eosinophilic pathologies.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!