Mass Spectrometer
Studies of Ambient and Chamber Aerosol Composition Using the Aerosol Mass Spectrometer
... aerosol mass spectrometer (herein referred to as AMS) measured aerosol chemical composition in a repeating cycle for 4 out of ev- ery 12 s during flight, including within the smoke ...particle mass ...
468
Development of electrospray ionization of biomolecules on a magnetic sector mass spectrometer
... The whole ESI process can be described as follows: the analyte sample is dissolved in a solution which is delivered ( at a rate perhaps o f 1 - 10 fiL/min) by a syringe pump to the tip of the electrospray needle where ...
285
PhosCalc: A tool for evaluating the sites of peptide phosphorylation from Mass Spectrometer data
... To demonstrate the utility and limitations of PhosCalc, we analysed a sample of the well characterised phospho- protein, bovine beta-casein (Sigma). A sample of bovine casein protein was digested with trypsin and ...
9
Time of Flight Mass Spectrometer with Transaxial Ion Reflector
... Two variants of application of a transaxial mirror with stigmatic spatial time-of-flight focusing in the time- of-flight mass spectrometer have been considered. In the first variant, the transaxial mirror ...
6
Peak-fitting and integration imprecision in the Aerodyne aerosol mass spectrometer: effects of mass accuracy on location-constrained fits
... time-of-flight mass spectrometer coupled to a micro orifice volatilization impactor (MOVI-HRToF-CIMS) for analy- sis of gas and particle-phase organic species, Aerosol ...
22
Background subtraction for the Cluster/CODIF plasma ion mass spectrometer
... Abstract. The CODIF instrument on the Cluster spacecraft is a time-of-flight (TOF) ion mass spectrometer. Although TOF spectrometers are relatively immune to background contam- ination due to the inherent ...
8
Matrix assisted ionisation in vacuum mass spectrometry and imaging on a modified quadrupole quadrupole time of flight mass spectrometer
... MAIV-MS has been implemented on a commercial quad- rupole-quadrupole-time-of-flight mass spectrometer fitted with an orthogonal intermediate pressure MALDI source. During these experiments it was observed ...
10
Identification of Burkholderia pseudomallei by Use of the Vitek Mass Spectrometer
... flight mass spectrometer to create a spectrum for the rapid identification of ...Vitek mass spectrometer research ...Vitek mass spectrometer can be used for the rapid identification ...
6
A field-deployable, chemical ionization time-of-flight mass spectrometer
... of-flight mass spectrometer (CI-TOFMS) that measures at- mospheric trace gases in real time with high ...complete mass spectra at rates faster than 10 ...
9
STRAPS v1.0: evaluating a methodology for predicting electron impact ionisation mass spectra for the aerosol mass spectrometer
... Aerosol Mass Spectrometer (AMS) are capable of quantifying all mass, but because of their inability to isolate individual molecules, comparisons have been limited to simple data products such as ...
13
A high-resolution mass spectrometer to measure atmospheric ion composition
... the mass/charge range up to 2000 ...of-Flight Mass Spectrometer (APi-TOF, Tofwerk AG). Its mass accuracy is better than ...the mass resolv- ing power is 3000 ...
15
Novel instrumentation and method development for a quadrupole ion trap mass spectrometer
... more mass analyzers operated successively or by one trapping mass ...analyzer. Mass analyzers are classified as beam type instruments or trapping ...the mass analyzer to a ...of mass ...
125
How To Analyze Plasma With An Inductively Coupled Plasma Mass Spectrometer
... The ions from the ICP source are then focused by the electrostatic lenses in the system. Remember, the ions coming from the system are positively charged, so the electrostatic lens, which also has a positive charge, ...
7
Improved methods of tandem mass spectrometry for proteomics applications in a quadrupole ion trap mass spectrometer
... One aspect worth mentioning when considering the change in ion abundance from space charge is the initial concentration of peptides in solution. Figure 5-4 shows the abundance for the peptides acetyl-RDGS (m/z 476), ...
182
A new non-magnetic time-of-flight mass spectrometer.
... the mass spectrum of the ion beam would be ...200), mass spectra corresponding to different n values ...precision mass determinations [Equation (17)], a momentum filter was added to the detection ...
61
Airborne observations of formic acid using a chemical ionization mass spectrometer
... ionization mass spectrometry can be used to selec- tively detect gas-phase organic acids with a limit of detection below ...ionization mass spectrometer (CIMS) utilising I − as ...
11
FATES: a flexible analysis toolkit for the exploration of single-particle mass spectrometer data
... Single-particle mass spectrometer (SPMS) anal- ysis of aerosols has become increasingly popular since its invention in the ...of mass spectral characteristics on size, time, and peak intensity; and ...
12
The application of process mass spectrometer in human like collagen production by recombinant Escherichia coli
... In this study, the exhaust analyzer (EA) and process mass spectrometer (PMS) were employed to investigate the influence of Human-like collagen (HLC) production. As a result, the biomass and HLC production ...
5
Magnetically enhanced quadrupole mass spectrometer
... the mass spectrometer has become an invaluable analytical tool for a wide range of professionals including, physicists, chemists, biologists, physicians, astronomers, geologists, physiologists and materials ...
252
Aerosol quantification with the Aerodyne Aerosol Mass Spectrometer: detection limits and ionizer background effects
... Aerosol Mass Spectrometer, a Quadrupole Aerosol Mass Spectrometer (Q-AMS) and a compact Time-of-Flight Aerosol Mass Spectrometer (c-ToF- ...aerosol mass concentrations and ...
14