What is Q TOF mass spectrometry?
Definition: A type of mass spectrometry where the mass-to-charge ratio of the sample ions is measured whilst the ions are held in a stable orbit by an electric field generated by four parallel electrodes.
What does a reflectron do?
A reflectron is also sometimes called an ion mirror because it reverses the trajectory of an ion. The purpose of the reflectron is to minimize the spread of kinetic energy of ions with the same mass to charge ratio.
What is Q1 and Q3 in mass spec?
Each of the two mass filters (Q1 and Q3) contains four parallel, cylindrical metal rods. Both Q1 and Q3 are controlled by direct current (dc) and radio-frequency (rf) potentials, while the collision cell, q, is only subjected to RF potential.
How does time-of-flight mass spectrometry work?
Time-of-Flight (TOF) is a mass analyser that utilises an electric field to accelerate generated ions through the same electrical potential, and then measures the time each ion takes to reach the detector.
What is Post source decay?
Post-source decay (PSD) Technique specific to reflectron time-of-flight mass spectrometers where product ions of metastable transitions or collision-induced dissociations generated in the flight tube prior to entering the reflectron are separated according to m/z to yield product ion spectra.
What is Q Orbitrap?
The Q Exactive mass spectrometer, combining high-performance quadrupole precursor selection with HR/AM Orbitrap detection, can be widely used in metabonomics, proteomics, environmental and food safety, clinical research, and forensic toxicology.
What is an ICP instrument?
6 days ago
Inductively coupled plasma mass spectrometry (ICP-MS) is an elemental analysis technology capable of detecting most of the periodic table of elements at milligram to nanogram levels per liter.
Who invented TOF?
It is the most common complex congenital heart defect, accounting for about 10 percent of cases. It was initially described in 1671 by Niels Steensen. A further description was published in 1888 by the French physician Étienne-Louis Arthur Fallot, after whom it is named….
| Tetralogy of Fallot | |
|---|---|
| Frequency | 1 in 2,000 babies |
What is PSD Maldi TOF analysis?
Post source decay (PSD) MALDI-TOF analysis Such ions are generally referred to as metastable ions, and the process of decomposition in the field free region between the ion source and the reflectron is commonly referred to as PSD. PSD fragment ions are formed within the field free region before entering the reflectron.