Guide for Interpretation of Mass Spectral Data Acquired with Time-of-Flight Secondary Ion Mass Spectroscopy

10.1520/e2695 ◽  
2009 ◽  
Author(s):  
Keyword(s):  
Spectral Data ◽  
Mass Spectroscopy ◽  
Time Of Flight ◽  
Mass Spectral Data ◽  
Secondary Ion Mass Spectroscopy ◽  
Mass Spectral ◽  
Secondary Ion

An investigation of the wear track on DLC (a-C:H) film by time-of-flight secondary ion mass spectroscopy

2001 ◽  
Vol 146-147 ◽  
pp. 378-383 ◽  
Author(s):  
Haruyo Fukui ◽  
Miki Irie ◽  
Yoshiharu Utsumi ◽  
Kazuhiko Oda ◽  
Hisanori Ohara
Keyword(s):  
Mass Spectroscopy ◽  
Wear Track ◽  
Time Of Flight ◽  
Secondary Ion Mass Spectroscopy ◽  
Secondary Ion

Identification of an Impurity in Commercial Sources of the Tomato Glycoalkaloid Tomatine

1995 ◽  
Vol 78 (3) ◽  
pp. 691-692 ◽  
Author(s):  
Rodney J Bushway ◽  
Lewis B Perkins
Keyword(s):  
Liquid Chromatography ◽  
Double Bond ◽  
Spectral Data ◽  
Mass Spectroscopy ◽  
The Other ◽  
Equal Size ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Data Support ◽  
Commercial Sources

Abstract Three commercial sources of tomatine showed 2 peaks of approximately equal size when determined by liquid chromatography (LC). Analysis by liquid chromatography/mass spectroscopy (LC/MS) showed one LC peak having an [M + H] ion at 1035, which corresponds to tomatine. The other peak had an [M + H] ion at 1033, which indicates a tomatine-like molecule that has tomatidenol for the aglycone instead of tomatidine or solasodine. Ultraviolet data support a delta C-5–C-6 double bond in the aglycone. LC of tomatine hydrolysate indicated the presence of tomatidine and tomatidenol and the absence of solasodine. Thus, the impurity was dehydrotomatine. Purity calculations based on mass spectral data showed that the tomatine standards were 80% pure.

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