Mass spectral fragmentation processes in nitronaphthalenes. A study using tandem mass spectrometry and collision-induced dissociation

1993 ◽  
Vol 7 (1) ◽  
pp. 67-70 ◽  
Author(s):  
Jehuda Yinon
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Collision Induced Dissociation ◽  
Tandem Mass ◽  
Mass Spectral Fragmentation ◽  
Mass Spectral ◽  
Fragmentation Processes

Fragmentation pathways in the mass spectra of isomeric phenylazoxypyridine-N-oxides

1992 ◽  
Vol 70 (4) ◽  
pp. 1028-1032 ◽  
Author(s):  
Nigel J. Bunce ◽  
H. Stewart McKinnon ◽  
Randy J. Schnurr ◽  
Sam R. Keum ◽  
Erwin Buncel
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Electron Impact ◽  
Mass Spectra ◽  
Chemical Reduction ◽  
Ion Source ◽  
Tandem Mass ◽  
Mass Spectral Fragmentation ◽  
Fragmentation Pathways ◽  
Mass Spectral

The mass spectral fragmentation pathways of a series of phenylazoxypyridine-N-oxides have been studied under electron impact conditions using tandem mass spectrometry. Besides simple C—N cleavages, the azoxypyridine-N-oxides undergo deep-seated rearrangements directly from the molecular ion. In addition, the spectra are complicated by a purely chemical reduction of the N—O functionalities that occurs in the ion source prior to ionization.

Fatty acid neutral losses observed in tandem mass spectrometry with collision-induced dissociation allows regiochemical assignment of sulfoquinovosyl-diacylglycerols

2013 ◽  
Vol 48 (2) ◽  
pp. 205-215 ◽  
Author(s):  
Rosalia Zianni ◽  
Giuliana Bianco ◽  
Filomena Lelario ◽  
Ilario Losito ◽  
Francesco Palmisano ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acid ◽  
Tandem Mass Spectrometry ◽  
Collision Induced Dissociation ◽  
Tandem Mass

scholarly journals Rapid detection of dimethyl yellow dye in curry by liquid chromatography-electrospray-tandem mass spectrometry

2010 ◽  
Vol 28 (No. 5) ◽  
pp. 427-432 ◽  
Author(s):  
F. Tateo ◽  
M. Bononi ◽  
F. Gallone
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Limit Of Detection ◽  
Tandem Mass ◽  
Mass Spectral ◽  
Limit Of Quantitation ◽  
Liquid Chromatography Tandem Mass ◽  
High Degree ◽  
Positive Ion

An accurate and rapid method, was devised for the identification and quantitation of dimethyl yellow dye in curry, based on liquid chromatography-tandem mass spectrometry interfaced with electrospray. Mass spectral acquisition was done in positive ion mode applying two fragmentation transitions to provide a high degree of selectivity. The extraction system provided a very high recovery (100.0% to 105.8%) and good results were obtained for the limit of detection (5 μg/kg) and limit of quantitation (16 μg/kg). The applicability of the method to identifing and quantifing the unauthorised dimethyl yellow dye in curry was demonstrated.

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