Showing papers in "International Journal of Mass Spectrometry in 2008"

TL;DR: In this article, a negative-ion proton transfer chemical ionization mass spectrometry (NI-PT-CIMS) technique was developed for on-line analysis of gaseous organic and inorganic acids.

TL;DR: In this paper, the authors used a monochromated VUV synchrotron light source with an energy resolution of 40meV (fwhm) comparable to that used for flame-sampling molecular beam PIMS studies of flame chemistry and reaction kinetics.

TL;DR: In this paper, electron attachment processes in isolated molecules in the gas phase, in clusters and in molecules condensed on surfaces are reviewed, and a special section is dedicated to electron attachment to biologically relevant molecules.

TL;DR: In this paper, a new method to simulate single electron tracks, from 0 to 100 eV, in water vapour is described, employing as input parameters the experimental and theoretical electron interaction cross sections and also relevant experimental energy loss distribution functions.

TL;DR: A review of metal ion-benzene complexes can be found in this article, providing an overview of the field and suggesting future research directions, as well as new measurements of their properties.

TL;DR: Glycerophospholipids and sphingolipid images were acquired from 16 µm thick coronal rat brain sections using MALDI-MS and showed the preferential distribution of these two lipids in gray matter and sulfatides show their preferential distribution in white matter.

TL;DR: In this article, a double spike reference material IRMM-3636 was prepared gravimetrically using highly enriched U-233 and U-236 isotope material and the n((235)U)/n(U-238) ratio was adjusted to about 1:1 and certified with an extended relative uncertainty of 0016% (coverage factor k = 2).

TL;DR: In this article, the detection and mass analysis of negative ions formed in a negative corona discharge using ambient air at atmospheric pressure using a mass spectrometer with high sensitivity and excellent mass resolution was reported.

TL;DR: In this paper, the structures of the sodium complexes of oligoglycines and oligoalanines have been studied by infrared spectroscopy in the gas phase, and two different experimental set-ups have been used to generate, trap and analyze the ions.

TL;DR: In this paper, a low temperature scanning tunneling microscope was used to characterize the self-organization of tetracyanoquinodimethane (TCNQ) in ultra-thin films on a Au(1.1) surface and its electronic structure.

TL;DR: In this paper, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was used to quantify and monitor the concentration of Pt along a single strand of hair from a patient who had been treated with cisplatin as cytostatic drug.

TL;DR: In this paper, a single Precambrian zircon crystals from the Baltic Shield were investigated with respect to isotope ratios using LA-ICP-MS for age dating.

TL;DR: In this article, a near field laser ablation inductively coupled plasma mass spectrometric (NF-LA-ICP-MS) procedure was created for element analysis in the nm resolution range.

TL;DR: In this paper, the absolute cross sections for the formation of H − and NH 2 − from ammonia and CH 2 − and CH 3 from methane are compared with available data from literature, and the present results are considerably different from what has been reported before.

TL;DR: In this article, the authors used molecular dynamics simulation to study the sputtering of Au nanoparticles (diameter 20nm) by 16 and 64-keV Au projectiles and found that the sputter yield is more than a factor of two larger than for sputtering a planar target.

TL;DR: In this paper, the mycosporine-like amino acids (MAAs) were isolated from the marine red alga Gracilaria tenuistipitata and analyzed by high-resolution accurate-mass sequential mass spectrometry (MS n ).

TL;DR: The combined use of SIMION 7.0 and the statistical diffusion simulation (SDS) user program in conjunction with SolidWorks ® with COSMSOSFloWorks ® fluid dynamics software to model a complete, commercial ion mobility spectrometer (IMS) was demonstrated for the first time and compared to experimental results for tests using compounds of immediate interest in the security industry (e.g., 2,4,6-trinitrotoluene, 2,7-dinitrofluorene, and cocaine) as discussed by the authors.

TL;DR: The Mars Organic Mass Analyzer (MOMA) as mentioned in this paper is a prototype for a spacecraft hardware design referred to as the MOMA that is currently scheduled for flight to Mars in 2013.

TL;DR: In this article, the authors applied electrospray ionization combined with collision-induced dissociation to characterize fragmentation pathways of doubly charged poly(ethylene oxide) polymers.

TL;DR: Capillary electrophoresis (CE) and inductively coupled plasma mass spectrometry (ICP-QMS and ICP-SFMS) have been applied to nuclear samples from PUREX process and leachates from MOX fuels as discussed by the authors.

TL;DR: In this paper, a multi-collector inductively coupled plasma mass spectrometer (ICPMS) is used for simultaneous measurements of 230Th and 229Th ion beams.

TL;DR: In this article, the effects of carbon dioxide on PTR-MS measurements were investigated and it was estimated that the mobility of water cluster ions in pure CO2 is almost 65% lower than in air.

TL;DR: In this article, the Cameca NanoSIMS 50 ion microprobe employing a Cs+ primary ion beam and measuring negative secondary ions was used for the analysis of sulfur isotope ratios in sulfates.

TL;DR: In this paper, a crossed electron-molecular beam experiment at high-energy resolution was used to study the dynamics of dissociative electron attachment to trinitrotoluene (TNT).

TL;DR: The use of Endopep-MS to detect non-commercial subtypes of BoNT A, B, E, and F which have been associated with botulism outbreaks are introduced and for the first time limits of detection are reported for Bo NT A2, A3, B2, and bivalent B using EndopEP-MS.

TL;DR: In this article, the potential of single particle laser desorption/ionization mass spectrometry for the analysis of atmospherically relevant mineral dusts was evaluated, where samples of hematite, goethite, calcium carbonate, calcium sulfate, silica, quartz, montmorrillonite, kaolinite, illite, hectorite, wollastonite and nephelinsyenit were investigated in positive and negative ion mode.

TL;DR: In this article, the column matrix effect in MC-ICP-MS has been shown to arise indirectly from the chemical separation and purification of molybdenum using anion exchange resin.

TL;DR: In this article, mass-resolved infrared multiple photon dissociation (IRMPD) spectroscopy was used for the identification of the second messenger deprotonated adenosine 3′,5′-cyclic monophosphate anion (cAMP-H) −, generated as gaseous species by electrospray ionization (ESI) and stored in a Paul ion-trap mass spectrometer.

TL;DR: In this paper, theoretical simulations have been carried out to consider the probabilities that an electron initially attached to a protonated amine site on a side chain can migrate (through-bond or through-space) to an S-S σ* orbital and thus cause disulfide cleavage.

TL;DR: QUIBL allows for the relative quantification of O-linked glycans over a linear dynamic range of at least two orders of magnitude, validating QUIBL as an applicable quantitative glycomics approach for both N-linked and O- linked glycans.