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Inside the test chamber, during the Anti-Mass Spectrometer test that sparks the Resonance Cascade disaster. In "Black Mesa Inbound", the player controls Gordon Freeman as he enters the facility on a monorail. After noticing the G-Man on a different train, Gordon departs and enters the Anomalous Materials Lab. He explores the area, donning his ...
This method of injection works well with pulsed sources such as MALDI but cannot be interfaced to continuous ion sources like electrospray. All commercial Orbitrap mass spectrometers utilize a curved linear trap for ion injection (C-trap). By rapidly ramping down trapping RF voltages and applying DC gradients across the C-trap, ions can be ...
Ion mobility spectrometry-mass spectrometry (IMS/MS or IMMS) is a technique where ions are first separated by drift time through some neutral gas under an applied electrical potential gradient before being introduced into a mass spectrometer. [43] Drift time is a measure of the collisional cross section relative to the charge of the ion.
A linear ion trap component of a mass spectrometer. An ion trap mass spectrometer may incorporate a Penning trap (Fourier-transform ion cyclotron resonance), [12] Paul trap [13] or the Kingdon trap. [14] The Orbitrap, introduced in 2005, is based on the Kingdon trap. [15] Other types of mass spectrometers may also use a linear quadrupole ion ...
Laser ionization time-of-flight mass spectrometer where ions are accelerated and separated by mass in a field-free drift region before detection Bendix MA-2 Time-of-Flight Mass Spectrometer, 1960s. Time-of-flight mass spectrometry (TOFMS) is a method of mass spectrometry in which an ion's mass-to-charge ratio is determined by a time of flight ...
Selected reaction monitoring (SRM), also called multiple reaction monitoring (MRM), is a method used in tandem mass spectrometry in which an ion of a particular mass is selected in the first stage of a tandem mass spectrometer and an ion product of a fragmentation reaction of the precursor ions is selected in the second mass spectrometer stage ...
Sample preparation for mass spectrometry is used for the optimization of a sample for analysis in a mass spectrometer (MS). Each ionization method has certain factors that must be considered for that method to be successful, such as volume, concentration , sample phase, and composition of the analyte solution.
For the analysis of volatile compounds, a purge and trap (P&T) concentrator system may be used to introduce samples. The target analytes are extracted by mixing the sample with water and purge with inert gas (e.g. Nitrogen gas) into an airtight chamber, this is known as purging or sparging.
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