mass-to-charge ratio


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mass-to-charge ratio

A physical parameter widely used in electron microscopy, nuclear physics and mass spectrometry to quantify particles and their effect on the system.
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This approach is highly selective and only molecular species with the desired combination of the precursor and product ion mass-to-charge ratio (m/z) are transmitted to the detector.
Glossary
ionization of protein molecules, analyzer detection, and mass-to-charge ratio separation.
Continuing education questions
Ions of different mass-to-charge ratios are then resolved in the time domain based upon their velocities through a field-free flight tube.
GC/TOF-MS Piques Interest in Food Labs
Just as a monochromator in emission/absorption spectrometry separates light according to wavelengths, a quadrupole mass analyzer used in AMS separates the ions of various elements into their mass-to-charge ratio.
A plethora of plasma sources to consider for your next application
3) identified peaks at an initial mass-to-charge ratio (m/z) and matched peaks by considering peaks within [+ or -] 0.
Clarification in the point/counterpoint discussion related to surface-enhanced laser desorption/ionization time-of-flight mass spectrometric identification of patients with adenocarcinomas of the prostate
Ions of only one particular mass-to-charge ratio will traverse the mass filter in a tight and stable spiral and be collected by the detector.
Using RGAs for process monitoring
the mass-to-charge ratio (m/z) is defined as a dimensionless quantity, although the physics of the accepted terminology are questionable because a quantity so defined cannot be used in equations of motion for charged particles.
The Expanding Role of Mass Spectrometry in Biotechnology
1B), and the mass spectra of all 96 fractions are combined, producing a two-dimensional display of peptide masses in which the abscissa displays the mass-to-charge ratio, the ordinate is determined by the retention time on the RP-HPLC column, and the signal intensity is depicted by color saturation (Fig.
Mass spectrometric phenotyping of Val34Leu polymorphism of blood coagulation factor XIII by differential peptide display
In selected ion storage, an ion of a single mass-to-charge ratio (m/z) is retained in the QIT at a time, much like SIM operation of a quadrupole mass filter.
Analytical advances in detection of performance-enhancing compounds
With oligonucleotides, the unfavorable mass-to-charge ratio tends to cause comigration of larger mixture components.
Got a tough separation? Try capillary electrophoresis
Mass spectrometer first ionizes the chemical compound to produce charged molecules or molecule fragments and then measures their mass-to-charge ratios [4].
SIMULTANEOUS DETECTION OF TETRACYCLINE AND ITS DEGRADATION BYPRODUCTS USING LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY WITH DUAL IONIZATION SOURCE
Online Supplemental Table 2 lists the mass-to-charge ratios (m/z) of precursor and product ions corresponding to monoisotopic molecular mass of substrates, products, and internal standards plus a proton or sodium cation (ID2S-S and GAL6S-S only).
High-throughput assay of 9 lysosomal enzymes for newborn screening

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