Remote sampling mass spectrometry for dry samples: Sheath‐flow probe electrospray ionization (PESI) using a gel‐loading tip inserted with an acupuncture needle

Rationale Probe electrospray ionization (PESI) is only applicable to liquid or wet samples. In this study, a sheath‐flow PESI method for remote sampling mass spectrometry that can be applied to dry samples was developed. Methods An acupuncture needle (0.12 mm outer diameter, 700 nm tip diameter) was...

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Bibliographic Details
Published in:Rapid communications in mass spectrometry 2018-03, Vol.32 (5), p.407-413
Main Authors: Usmanov, Dilshadbek T., Ashurov, Khatam B., Ninomiya, Satoshi, Hiraoka, Kenzo, Wada, Hiroshi, Nakano, Hiroshi, Matsumura, Masaya, Sanada‐Morimura, Sachiyo, Nonami, Hiroshi
Format: Article
Language:English
Subjects:
Acupuncture
Analytical chemistry
Electrospraying
Instant coffee
Ionization
Ions
Mass spectra
Mass spectrometry
Morphine
Narcotics
Nondestructive testing
Rhodamine
Sampling methods
Scientific imaging
Spatial resolution
Spectroscopy
Tablets
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Summary:Rationale Probe electrospray ionization (PESI) is only applicable to liquid or wet samples. In this study, a sheath‐flow PESI method for remote sampling mass spectrometry that can be applied to dry samples was developed. Methods An acupuncture needle (0.12 mm outer diameter, 700 nm tip diameter) was inserted into a gel‐loading tip with a 0.1 mm protrusion out of the tip. Analytes were extracted by filling the latter tip with solvent and softly touching the sample surface for a short time (
ISSN:0951-4198
1097-0231
DOI:10.1002/rcm.8045