On-Line Mass Spectrometric Methods for the Determination of the Primary Products of Fast Pyrolysis of Carbohydrates and for Their Gas-Phase Manipulation

2013 ◽  
Vol 85 (22) ◽  
pp. 10927-10934 ◽  
Author(s):  
Matthew R. Hurt ◽  
John C. Degenstein ◽  
Piotr Gawecki ◽  
David J. Borton II ◽  
Nelson R. Vinueza ◽  
...  
Keyword(s):  
Gas Phase ◽  
Fast Pyrolysis ◽  
Mass Spectrometric ◽  
Primary Products ◽  
Line Mass ◽  
On Line ◽  
Phase Manipulation

Mass spectrometric determination of Rb fission yields from 3He and 4He induced fission of 238U and 232Th

1983 ◽  
Vol 61 (4) ◽  
pp. 786-794 ◽  
Author(s):  
P. L. Reeder
Keyword(s):  
Mass Spectrometric ◽  
Excitation Energies ◽  
Spectrometric Technique ◽  
Mass Spectrometric Determination ◽  
Mass Spectrometric Technique ◽  
Line Mass ◽  
On Line ◽  
Induced Fission ◽  
Fission Yields

Cumulative and independent fission yields of Rb isotopes have been measured for 3He and 4He induced fission of 232Th and 238U at bombarding energies slightly above the Coulomb barriers. The on-line mass spectrometric technique provided yields for masses 89–97. Mean masses and widths of the Rb independent yield distributions were obtained and were compared to other fissioning systems with excitation energies up to 160 MeV.

scholarly journals Gas Chromatographic Determination of Cyprodinil, Fludioxonil, Pyrimethanil, and Tebuconazole in Grapes, Must, and Wine

1997 ◽  
Vol 80 (4) ◽  
pp. 867-870 ◽  
Author(s):  
Paolo Cabras ◽  
Alberto Angioni ◽  
Vincenzo L Garau ◽  
Elizabeth V Minelli
Keyword(s):  
Chromatographic Method ◽  
High Selectivity ◽  
Chromatographic Determination ◽  
Mass Spectrometric ◽  
On Line ◽  
One Step ◽  
Low Sensitivity ◽  
Gas Chromatographic Method ◽  
Nitrogen Phosphorus

Abstract A rapid and simple gas chromatographic method for determinating cyprodinil, fludioxonil, pyrimethanil, and tebuconazole in grapes, must, and wine is described. An on-line microextraction method was used with a one-step extraction–partition procedure. Nitrogen–phosphorus and mass spectrometric detectors were used, because of their low sensitivity and high selectivity. Because of high selectivity of detector, no cleanup was necessary and the extract was concentrated 5 times. Recoveries from fortified grapes, must, and wine ranged from 93 to 110%. Limits of determination were 0.05 mg/kg for cyprodinil and pyrimethanil and 0.10 mg/kg for fludioxonil and tebuconazole.

On-Line Mass-Spectrometric Measurement of the Masses of Neutron-Rich Sodium Isotopes

1973 ◽  
Vol 31 (2) ◽  
pp. 118-121 ◽  
Author(s):  
R. Klapisch ◽  
R. Prieels ◽  
C. Thibault ◽  
A. M. Poskanzer ◽  
C. Rigaud ◽  
...  
Keyword(s):  
Mass Spectrometric ◽  
Mass Spectrometric Measurement ◽  
Spectrometric Measurement ◽  
Line Mass ◽  
On Line ◽  
The Masses
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