Results 31 to 40 of about 592,569 (295)

Isolation and identification of an isomeric sildenafil analogue as an adulterant in an instant coffee premix

Forensic Sciences Research, 2020
The proliferation of adulterated health foods and beverages in the market demands a comprehensive analytical strategy to identify the adulterants, particularly those of isomeric phosphodiesterase 5 (PDE5) inhibitors.
Ahmad Yusri Mohd Yusop, Linda Xiao, Shanlin Fu   +2 more
doaj   +1 more source

Non-targeted screening of emerging contaminants in South African surface and wastewater

Emerging Contaminants, 2023
Targeted analysis of contaminants in water are often focused on a narrow range of chemicals, falling short of the true pollution status of water bodies.
Ovokeroye Akpojevwe Abafe, Muhammad Abubakar Lawal, Tlou B. Chokwe   +2 more
doaj   +1 more source

Quantification for non-targeted LC/MS screening without standard substances [PDF]

Scientific Reports, 2020
AbstractNon-targeted and suspect analyses with liquid chromatography/electrospray/high-resolution mass spectrometry (LC/ESI/HRMS) are gaining importance as they enable identification of hundreds or even thousands of compounds in a single sample. Here, we present an approach to address the challenge to quantify compounds identified from LC/HRMS data ...
Jaanus Liigand, Tingting Wang, Joshua Kellogg, Jørn Smedsgaard, Nadja Cech, Anneli Kruve   +5 more
openaire   +2 more sources

Non‐targeted hepatitis C virus screening in acute care healthcare settings in the Southern Appalachian region

Journal of the American College of Emergency Physicians Open, 2022
Objectives The objective of this study was to evaluate the performance of non‐targeted hepatitis C virus (HCV) screening in emergency departments (EDs) and other healthcare settings in terms of patients identified with HCV infection and linked to HCV ...
Cody A. Chastain, Cathy A. Jenkins, Michelle Rose, Daniel Moore, Diana Parker, Barbra Cave, Jane Crowe, Sarah Adams, Marrieth G. Rubio, Rachel Potter, Kimberly Quedado, Ian D. Jones, Jin H. Han, Wesley H. Self   +13 more
doaj   +1 more source

Improving Exposure Assessment Using Non-Targeted and Suspect Screening: The ISO/IEC 17025: 2017 Quality Standard as a Guideline

Journal of Xenobiotics, 2021
The recent advances of novel methodologies such as non-targeted and suspect screening based on high-resolution mass spectrometry (HRMS) have paved the way to a new paradigm for exposure assessment.
Juliana Monteiro Bastos da Silva, Jade Chaker, Audrey Martail, Josino Costa Moreira, Arthur David, Barbara Le Bot   +5 more
doaj   +1 more source

Non-target screening for detecting the occurrence of plant metabolites in river waters [PDF]

Environmental Sciences Europe, 2020
Abstract Background In surface waters, using liquid chromatography coupled to high resolution mass spectrometry (LC-HRMS), typically large numbers of chemical signals often with high peak intensity remain unidentified. These chemical signals may represent natural compounds released from plants,
Mulatu Yohannes Nanusha, Martin Krauss, Werner Brack   +2 more
openaire   +1 more source

Targeted versus non-targeted HIV testing offered via electronic questionnaire in a Swiss emergency department: A randomized controlled study.

PLoS ONE, 2018
BackgroundIn Switzerland, the national HIV testing recommendations propose targeted testing. Although the emergency department (ED) is mentioned specifically as a site where HIV testing should take place, the testing rate in our ED is 1% of patients seen.
Cleo Gillet, Katharine E A Darling, Nicolas Senn, Matthias Cavassini, Olivier Hugli   +4 more
doaj   +1 more source

Exploring the efficacy of metabarcoding and non-target screening for detecting treated wastewater

Science of The Total Environment, 2023
Wastewater treatment processes can eliminate many pollutants, yet remainder pollutants contain organic compounds and microorganisms released into ecosystems. These remainder pollutants have the potential to adversely impact downstream ecosystem processes, but their presence is currently not being monitored.
Sieber, Guido, Drees, Felix, Shah, Manan, Stach, Tom L., Hohrenk-Danzouma, Lotta, Bock, Christina, Vosough, Maryam, Schumann, Mark, Sures, Bernd, Probst, Alexander J., Schmidt, Torsten Claus, Beisser, Daniela, Boenigk, Jens   +12 more
openaire   +2 more sources

A Review of Research Progress on Detection and Screening Techniques for Perfluoroalkyl and Polyfluoroalkyl Substances

Yankuang ceshi
Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals with widespread industrial and commercial applications, ubiquitous in surface water, groundwater, soil, and sediments.
Xuesong LIU, Tao ZHANG, Yanqiu TAO, Yonggao LYU   +3 more
doaj   +1 more source

Non-target screening and digital archiving of abiotic samples

, 2019
This report describes the results of a doctoral project at Umeå University, which has been initiated and funded by the Swedish Environmental Protection Agency. Within this project, innovative methods were developed to create and use digital archives for environmental samples, such as biological tissue, sediment and sludge.
Haglund, Peter, Veenaas, Cathrin
openaire   +3 more sources