accurate mass

accurate mass

The mass of an ion of specified isotopic composition, which is calculated by summing the exact masses of the constituent atoms. The empirical formula of an ion can be deduced from the measured accurate mass of the ion if the ion mass is low enough to limit the number of formulaic possibilities and if the exact mass value is accurately known.
References in periodicals archive ?
Long-living isomeric states, Which also play a role in the r process, Will be resolved from the ground states to obtain accurate mass values.
Thermo Scientific Orbitrap GC-MS systems have been updated with new capabilities in high resolution accurate mass (HRAM) GC-MS, designed to provide users across metabolomics, food safety, environmental, pharma and toxicology applications with data accuracy.
At the meeting, Amanda Moore, MSFS, Michael Frontz, MSFS, D-ABFT-FT, D-ABC, and Greg Jellick, MSFS, D-ABFT-FT, forensic toxicologists at Quality Forensic Toxicology, described a qualitative screening method to identify synthetic cannabinoids and related metabolites in blood, using accurate mass (LC-QTOF/MS) for Cayman's Synthetic Cannabinoid Screening Library, to create a Personal Compound Database and Library (PCDL) complete with retention times for 350+ synthetic cannabinoids.
Their findings, obtained using high resolution accurate mass spectrometry, suggest an underlying ecological problem that has been in the making for decades.
Mass flow controllers based on capillary thermal mass flow technology are said to provide exponentially more accurate mass flow data than volumetric flow devices for industrial gas mass flow control applications.
Accurate mass measurements were performed with the Fisons VG sector-field instrument (EI) and a FT-ICR mass spectrometer.
NASA's Kepler space telescope, best known for spotting distant planets, had previously delivered accurate mass readings for about 2,000 red giants.
However, reagent availability issues prompted us to evaluate LC-MS with high-resolution accurate mass measurement (HRAM) as an alternative (1).
The combination of fast, predictable GC separations with accurate mass capabilities will translate to an increased ability to profile entire metabolomes.
These advances in technology are paired with the company's ChromaTOF-HRT brand software with High Resolution Deconvolution, which is tailored to get the most out of high-resolution data using NIST and accurate mass libraries.
The flowmeters' highly accurate mass flow measurements have improved product quality and reduced production time by 10 to 15 per cent at the Unilever facility in Gebze, Turkey -- one of the world's largest manufacturing plants for detergent, household and personal care products.
The Polaris Wireless Altus application suite is the industry's only software-based surveillance solution that enables accurate mass location - providing users the ability to simultaneously locate all subscribers in a wireless network in real time and on a historical basis.