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Showing 1 to 12 of 2560 entries
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Enhancement of ion intensity in time-of-flight secondary-ionization mass spectrometry.

Journal of the American Society for Mass Spectrometry

Nicola AJ, Muddiman DC, Hercules DM.
PMID: 24203401
J Am Soc Mass Spectrom. 1996 May;7(5):467-72. doi: 10.1016/1044-0305(96)00006-2.

Enhancement of ion intensity in static secondary-ionization mass spectrometry (SIMS) has been achieved by using a matrix-assisted sample preparation technique. Previous investigations of polymers and biomolecules by SIMS indicated that secondary-ion (SI) yield is dependent on substrate coverage. Recently...

Investigation of the initial reactions of the Calcote mechanism for soot formation.

Journal of the American Society for Mass Spectrometry

Egsgaard H.
PMID: 24203428
J Am Soc Mass Spectrom. 1996 Jun;7(6):559-64. doi: 10.1016/1044-0305(95)00708-3.

The first three reactions of the Calcote mechanism for soot formation, that is, C3H 3 (+) +C2H2→C5H 5 (+) , C5H 5 (+) →C5H 3 (+) H2, and C5H 3 (+) +C2H2→C7H 5 (+) , have been studied based...

Effects of functional group interactions on the gas-phase methylation and dissociation of acids and esters.

Journal of the American Society for Mass Spectrometry

Isbell JJ, Brodbelt JS.
PMID: 24203429
J Am Soc Mass Spectrom. 1996 Jun;7(6):565-72. doi: 10.1016/1044-0305(96)00016-5.

Functional group interactions have been observed to affect gas-phase ion-molecule chemistry in a quadrupole ion trap mass spectrometer. Gas-phase methylation and collisionactivated dissociation reactions of a series of related acids and esters allows an evaluation of the structural factors...

The 12th Asilomar conference on mass spectrometry: "Elemental mass spectrometry" September 20-24, 1996, the Asilomar conference center, Pacific Grove, California.

Journal of the American Society for Mass Spectrometry

[No authors listed]
PMID: 24203614
J Am Soc Mass Spectrom. 1996 Sep;7(9):987. doi: 10.1016/S1044-0305(96)80047-X.

No abstract available.

Nano electrospray combined with a quadrupole ion trap for the analysis of peptides and protein digests.

Journal of the American Society for Mass Spectrometry

Körner R, Wilm M, Morand K, Schubert M, Mann M.
PMID: 24203235
J Am Soc Mass Spectrom. 1996 Feb;7(2):150-6. doi: 10.1016/1044-0305(95)00626-5.

A nano electrospray (NanoES)/ion trap combination was developed to take advantage of the long spraying time of the NanoES source (Wilm, M. S., Mann, M. Int. J. Mass Spectrom. Ion Processes 1994, 136, 167-180) for extensive experiments on the...

High-energy collision-induced dissociation mass spectrometry of synthetic mannose-6-phosphate oligosaccharides.

Journal of the American Society for Mass Spectrometry

Lipniunas PH, Townsend RR, Burlingame AL, Hindsgaul O.
PMID: 24203240
J Am Soc Mass Spectrom. 1996 Feb;7(2):182-8. doi: 10.1016/1044-0305(95)00635-4.

The high-energy collision-induced dissociation spectra of a series of linear and branched synthetic mannosyl oligosaccharides that contain 6-phosphate substituents on either or both non-reducing terminal or penultimate residues have been studied. These phosphorylated structures were designed to mimic those...

44th ASMS conference on mass spectrometry.

Journal of the American Society for Mass Spectrometry

[No authors listed]
PMID: 24203246
J Am Soc Mass Spectrom. 1996 Feb;7(2):219. doi: 10.1016/S1044-0305(96)80144-9.

No abstract available.

Mechanisms of single-electron capture by the dichlorocarbene dication.

Journal of the American Society for Mass Spectrometry

Leyh B, Hautot D.
PMID: 24203298
J Am Soc Mass Spectrom. 1996 Mar;7(3):266-75. doi: 10.1016/1044-0305(95)00652-4.

The single-electron capture (SEC) by dichlorocarbene dications with eight different atomic and molecular target gases, CCl 2 (2+) + G → CCl 2 (+) + G(+), has been studied by product ion spectroscopy and ion kinetic energy spectroscopy. The...

Award presentations and plenary lecture.

Journal of the American Society for Mass Spectrometry

[No authors listed]
PMID: 24203310
J Am Soc Mass Spectrom. 1996 Mar;7(3):307. doi: 10.1016/S1044-0305(96)80155-3.

No abstract available.

Time-resolved measurements of individual ion cloud signals to investigate space-charge effects in plasma mass spectrometry.

Journal of the American Society for Mass Spectrometry

Olesik JW, Dziewatkoski MP.
PMID: 24203362
J Am Soc Mass Spectrom. 1996 Apr;7(4):362-7. doi: 10.1016/1044-0305(96)00007-4.

A new approach to directly monitor space charge induced effects due to high concentrations of efficiently ionized elements in inductively coupled plasma mass spectrometry (ICP-MS) is described. The broadening of ion clouds produced from individual, monodisperse drops of sample...

Estimation of the electron affinities of C60, corannulene, and coronene by using the kinetic method.

Journal of the American Society for Mass Spectrometry

Chen G, Cookscor RG, Corpuz E, Scott LT.
PMID: 24203477
J Am Soc Mass Spectrom. 1996 Jul;7(7):619-27. doi: 10.1016/1044-0305(96)85610-8.

Novel anions that contain one molecule each of C60 and the polycyclic aromatic hydrocarbon coronene are generated in the gas phase by electron attachment desorption chemical ionization. Collision-induced dissociation reveals that these cluster ions are loosely bonded. Fragmentation of...

The reactions of ground state Cu(+) and Fe (+) with the 20 common amino acids.

Journal of the American Society for Mass Spectrometry

Lei QP, Amster IJ.
PMID: 24203565
J Am Soc Mass Spectrom. 1996 Aug;7(8):722-30. doi: 10.1016/1044-0305(96)80518-6.

A systematic investigation of the gas-phase reactions of Cu(+) and Fe(+) with the 20 common amino acids is reported. Metal ions are formed by laser ablation of a metal target and are trapped in the analyzer cell of a...

Showing 1 to 12 of 2560 entries