Zobrazeno 1 - 10
of 50
pro vyhledávání: '"V L, Talrose"'
Publikováno v:
Journal of Electrostatics. 64:555-561
The general principles of the electric field assisted ion evaporation in the membrane ion source are considered. In the ion source, the liquid sample under investigation is placed in narrow channels of a polymer track membrane, which separates the li
Publikováno v:
Journal of Mass Spectrometry. 35:337-346
The low-mass ions observed in both positive and negative plasma desorption mass spectrometry (PDMS) of the high explosives HMX, RDX, CL-20, NC, PETN and TNT are reported. Possible identities of the most abundant ions are suggested and their presence
Publikováno v:
Håkansson, K, Zubarev, R A, Coorey, R V, Talrose, V L & Håkansson, P 1999, ' Interaction between explosive and analyte layers in explosive matrix-assisted plasma desorption mass spectrometry ', Rapid Communications in Mass Spectrometry, vol. 13, pp. 1169-74 .
An HMX/insulin two-layer system was chosen as a model for further investigation of the matrix properties of explosive materials for protein analytes in plasma desorption mass spectrometry. The dependencies of the molecular ion yield and average charg
Publikováno v:
Journal of Electrostatics. :615-620
An extraction of negative charged species under electric field from liquid solutions into vacuum by use of poly(ethylene terephialate) track membranes has been investigated. The measurements of a total current at different voltages, applied between a
Publikováno v:
Rapid Communications in Mass Spectrometry. 11:63-70
The working hypothesis of this study was that the chemical energy of matrix material may be released, although only on a microscale, under MeV ion bombardment and may assist ejection of large intact bioorganic molecules. To test the hypothesis, the p
Publikováno v:
Rapid Communications in Mass Spectrometry. 10:515-520
Publikováno v:
Analytical Chemistry. 66:1704-1707
A membrane consisting of polymeric film densely perforated with channels is used as the interface between a solution at atmospheric pressure and the vacuum chamber of a mass spectrometer. It is shown that an electric field can stimulate ion emission
Publikováno v:
Proceedings of 2002 IEEE 14th International Conference on Dielectric Liquids. ICDL 2002 (Cat. No.02CH37319).
The main principles of the field extraction of ions from water/glycerol solutions by use of a of poly(ethylene terephtalate) track membrane technique are considered. Application of the technique provides a direct transfer of ions dissolved in the liq
Publikováno v:
Rapid communications in mass spectrometry : RCM. 15(7)
Electric field extraction of gaseous negative ions directly from water/glycerol solutions by use of a track membrane technique was investigated. The distributions of numbers of solvent molecules in the extracted cluster ions for different compounds w
Publikováno v:
Rapid communications in mass spectrometry : RCM. 13(21)
Although the ionization/desorption mechanisms in matrix-assisted laser desorption/ionization (MALDI) remain poorly understood, there is a clear difference between the energy absorption processes in the ultraviolet (UV) and infrared (IR) modes of oper