A reinvestigation of the collisional activation mass spectra of [C7H7]+ ion mixtures

1988 ◽  
Vol 23 (7) ◽  
pp. 543-549 ◽  
Author(s):  
J. M. Buschek ◽  
J. J. Ridal ◽  
J. L. Holmes
Keyword(s):  
Collisional Activation ◽  
Mass Spectra

Metastable ion decomposition and collisional activation mass spectra of 1,2,3-triarylpropen-1-ones

1991 ◽  
Vol 26 (4) ◽  
pp. 298-304
Author(s):  
K. P. Madhusudanan ◽  
S. Durani ◽  
D. M. Reddy ◽  
R. S. Kapil ◽  
Y. Itagaki ◽  
...  
Keyword(s):  
Collisional Activation ◽  
Mass Spectra ◽  
Metastable Ion Decomposition

Collisional activation mass spectra of ions containing polyisotopic elements

1982 ◽  
Vol 17 (2) ◽  
pp. 79-80 ◽  
Author(s):  
Peter J. Todd ◽  
Michael P. Barbalas ◽  
Fred W. McLafferty
Keyword(s):  
Collisional Activation ◽  
Mass Spectra

Collisional activation mass spectra of [C6H8]+ ions

1978 ◽  
Vol 13 (5) ◽  
pp. 254-257 ◽  
Author(s):  
Trudy E. Smith ◽  
S. Ruven Smith ◽  
Fred W. McLafferty
Keyword(s):  
Collisional Activation ◽  
Mass Spectra

Collision-Induced Dissociations of Deprotonated Peptides. Dipeptides Containing Asn, Arg and Lys

1993 ◽  
Vol 46 (5) ◽  
pp. 693 ◽  
Author(s):  
RJ Waugh ◽  
JH Bowie ◽  
ML Gross
Keyword(s):  
Collisional Activation ◽  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Side Chain ◽  
Deprotonated Peptides

The presence and position of Asn, Arg and Lys residues in dipeptides may be determined from a consideration of the collisional activation mass spectra of the (M-H)- ions formed by fast atom bombardment. All spectra show the basic dipeptide cleavage, i.e. NH2CH(R1)CONHCH(R2)CO2- → NH2C(R1)CONHCH(R2)CO2H → NH2C(R1)=C=O + -NHCH(R2)CO2H. There are a number of fragmentations characteristic of a particular α side chain: for example, Arg loses HN=C=NH (42 u).

Collisional activation mass spectra

1979 ◽  
Vol 293 (1400) ◽  
pp. 93-102 ◽  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrum ◽  
Internal Energy ◽  
Structure Determination ◽  
Collisional Activation ◽  
Mass Spectra ◽  
Structure Characterization ◽  
Unimolecular Decomposition ◽  
Identification Technique

Collision with gas molecules can be used to add internal energy to gaseous ions in transit through a mass spectrometer, causing their subsequent unimolecular decomposition. Mass analysis of the resulting fragment ions produces a collisional activation mass spectrum whose utility is basically similar to that of a normal mass spectrum. Promising applications to date have been found in ion structure characterization for fundamental studies and molecular structure determination, for which the insensitivity of the collisional activation mass spectrum to the ion’s internal energy is a unique advantage; examples are given for structure determination of C 7 H 7 + and CSH 3 + isomers. An additional application attracting increasing attention is as a separation/identification technique for complex mixtures; this involves mass spectrometric separation of the ionized mixture components followed by their identification from the corresponding collisional activation (or metastable ion) mass spectra. This two-dimensional mass spectrometry (‘m.s.-m.s.’) technique is complementary to g.c.-m.s. and liquid chromatography - mass spectrometry, and its use is illustrated by the determination of trace components in gasoline and the chirality of organophosphates.

Interference peaks in collisional activation mass spectra: The loss of CH3˙ from [C13H9] ions

1986 ◽  
Vol 21 (3) ◽  
pp. 105-108 ◽  
Author(s):  
Gerhard Holzmann ◽  
Johan K. Terlouw ◽  
Cornelis E. C. A. Hop ◽  
Peter C. Burgers
Keyword(s):  
Collisional Activation ◽  
Mass Spectra

Collisional activation mass spectra of M−. ions of azo dyes containing 2-naphthol

1989 ◽  
Vol 18 (6) ◽  
pp. 394-400 ◽  
Author(s):  
W. C. Brumley ◽  
G. M. Brilis ◽  
R. J. Calvey ◽  
J. A. Sphon
Keyword(s):  
Azo Dyes ◽  
Collisional Activation ◽  
Mass Spectra
Sign in / Sign up

Export Citation Format

Share Document