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Low-temperature plasma probe for ambient desorption ionization.
TLDR
A low-temperature plasma (LTP) probe has been developed for ambient desorption ionization and demonstration applications include direct analysis of cocaine from human skin, determination of active ingredients directly in drug tablets, and analysis of toxic and therapeutic compounds in complex biological samples.
Development, characterization, and application of paper spray ionization.
TLDR
It is demonstrated that paper spray is applicable to the analysis of a wide variety of compounds, including small organic compounds, peptides, and proteins, as well as to mass spectrometric analysis of complex mixtures.
Ambient Mass Spectrometry
A recent innovation in mass spectrometry is the ability to record mass spectra on ordinary samples, in their native environment, without sample preparation or preseparation by creating ions outside
Rectilinear ion trap: concepts, calculations, and analytical performance of a new mass analyzer.
TLDR
A mass analyzer based on a rectilinear geometry ion trap (RIT) has been built, and its performance has been characterized, showing an improvement of 40 times in the signal-to-noise ratio resulting from the higher ion trapping capacity of the RIT.
Ambient Mass Spectrometry
TLDR
Desorption electrospray ionization (DESI), the principal method described here, electrically charged droplets are directed at the ambient object of interest; they release ions from the surface, which are then vacuumed through the air into a conventional mass spectrometer.
Desorption electrospray ionization and other ambient ionization methods: current progress and preview.
TLDR
This review of DESI and other ambient methods centers on the accompanying chemical processes, which can be used to optimize chemical analysis, including molecular imaging.
Paper spray ionization devices for direct, biomedical analysis using mass spectrometry.
Mass spectrometric imaging of lipids using desorption electrospray ionization.
Introduction to Mass Spectrometry
More precisely mass spectrometry determines the mass of a molecule. * The mass to charge ratio (m/z) is used to describe ions observed in mass spectrometry. By convention, m ** is the numerical value
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