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 ?
Contract notice: SubministraciEn and installing a mass spectrometer high resolution and accurate mass cupped cormatografE[degrees]a system with high pressure liquid.
The combination of fast, predictable GC separations with accurate mass capabilities will translate to an increased ability to profile entire metabolomes.
This is the first public accessible Hydrogen refueling station that has demonstrated SAE compliant fast fill performance with accurate mass flow measurement.
During the introductory period of HRMS in toxicology laboratories, use of accurate mass with a relatively wide ([+ or -] 20 ppm) mass error window was reported for identifying unknowns (2).
Hence, accurate mass flow measurements serve to enable quantity certainty during transfers, and enhance transparency during transactions.
His group has also developed the highest sensitivity electrospray mass spectrometry interface, which produces 1 zmol detection limits for peptides in tryptic digests, and has demonstrated accurate mass and time tag analysis from 400 fg of an E.
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.
The past 15 years have seen great advances in the investigation of nucleic acids and their components, with progress being made in the areas of accurate mass determination, sequencing, study of noncovalent interactions, characterization of isolated and synthetic DNA and RNA, and more.
Previous Mars Express flybys have already provided the most accurate mass yet for Phobos, and the High Resolution Stereo Camera (HRSC) has provided the volume.
n] spectrum obtained from the accurate mass can be considered a unique method enabled by the use of the LCMS-IT-TOF system.