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Showing papers in "International Journal of Mass Spectrometry in 2003"


Journal ArticleDOI
TL;DR: In this paper, a new technique for high precision measurement of iron isotope ratios using high mass resolution MC-ICPMS on the Thermo-Finnigan Neptune was presented, and the performance of the technique was tested by determining the reproducibility and accuracy of synthetic Fe samples and spiked standards against the IRMM014 standard.

325 citations


Journal ArticleDOI
TL;DR: In this paper, a combination of gas chromatography and Proton Transfer Reaction Mass Spectrometer (PTR-MS) is used to detect volatile organic compounds (VOCs).

310 citations


Journal ArticleDOI
TL;DR: In this article, the reactions of monoterpenes and related C10 compounds with H3O+ in a proton transfer reaction-mass spectrometer (PTR-MS) were studied, with a view to better understanding the signal produced by this instrument when detecting these compounds.

202 citations


Journal ArticleDOI
TL;DR: The application of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry to the analysis of carbohydrates and their conjugates with proteins and lipids is reviewed in this paper.

193 citations


Journal ArticleDOI
TL;DR: DIOS-MS as discussed by the authors is a matrixless laser vaporization method for generating gas-phase ions, which has been applied to the analysis of reactions directed toward development of new catalysts and transformations.

191 citations


Journal ArticleDOI
TL;DR: In this paper, a set of new techniques with significantly improved accuracy and precision has been developed and qualified for isotope ratio measurements of nuclear material using thermal ionization mass spectrometry (TIMS).

175 citations


Journal ArticleDOI
TL;DR: In this article, a ladder of relative Na+ affinities of amino acids (AA) was derived using the Cooks kinetic method, and the relative values to the Na+ affinity of Ala (167kJ−1), measured by the same approach using Na+-bound dimers of Ala and a series of acetamide derivatives.

132 citations


Journal ArticleDOI
TL;DR: In this article, the technique of guided ion beam tandem mass spectrometry for the measurement of thermodynamic information is highlighted and periodic trends in covalent bonds between first, second, and a few third row transition metals and small ligands are discussed.

126 citations


Journal ArticleDOI
TL;DR: In this article, stable isotope ratios of the life science elements carbon, hydrogen, oxygen, nitrogen and nitrogen vary slightly, but significantly in major compartments of the earth, due mainly to antropogenic activities including land use change and fossil fuel burning.

120 citations


Journal ArticleDOI
TL;DR: In this paper, a detailed analysis of matrix ion signals generated at infrared laser wavelengths around 3 and 10μm is presented and compared to those generated by UV-MALDI, revealing a complex picture of the hitherto hardly understood IR-MAL DI ionization mechanisms.

118 citations


Journal ArticleDOI
TL;DR: The Vienna Environmental Research Accelerator (VERA) as discussed by the authors has been upgraded to a universal facility for accelerator mass spectrometry (AMS) and is capable of measuring many long-lived radionuclides at natural abundances across the nuclear chart, from the lightest (10 Be ) to the heaviest ( 244 Pu ).

Journal ArticleDOI
TL;DR: In this paper, an extensive analysis of the headspace (HS) of coffee brew using proton-transfer-reaction mass-spectrometry (PTR-MS) is presented.

Journal ArticleDOI
TL;DR: In this article, a study of acetonitrile in exhaled breath and in the headspace of urine from several cigarette smokers and several non-smokers using selected ion flow tube mass spectrometry (SIFT-MS) was carried out.

Journal ArticleDOI
TL;DR: A set of protocols for MALDI-MS sample preparation of peptides and oligonucleotides on prestructured sample supports that have been optimized for high detection sensitivity, robust performance, ease of use, and include sample purification and concentration are provided.

Journal ArticleDOI
TL;DR: The inherent effects of molecular structure on acid-base behavior have been a topic of debate for over 30 years as mentioned in this paper, and three of the models developed to probe these effects are reviewed in this article.

Journal ArticleDOI
TL;DR: In this article, the authors report on the in vivo breath-by-breath analysis of volatiles released in the mouth during eating of ripe and unripe banana, and compare the NS with the headspace (HS) profile, two differences are outlined.

Journal ArticleDOI
TL;DR: In this paper, the negative ion production processes in thymine (T) and 5-bromouracil (BrU) after impact of low energy electrons (0 − 2 eV) were compared.

Journal ArticleDOI
TL;DR: In this paper, the hexanuclear methoxo-oxovanadium cluster V6O7(OCH3)12 (1) was investigated by electrospray ionization in methanol solution.

Journal ArticleDOI
TL;DR: In this paper, an energy-isochronous time-of-flight mass spectrometer is designed such that their lateral phase-space acceptance is larger than the corresponding emittance of the injected ion beam.

Journal ArticleDOI
TL;DR: In this article, a mathematical model described ions transition for both coaxial and planar separation chamber design is proposed and compared by comparison of ion diffusion losses (sensitivity) and response time (speed of operation). Qualitative and quantitative advantages and disadvantages of both variants are considered.

Journal ArticleDOI
TL;DR: FRET methods will be useful to obtain direct measurements, which characterize the dynamics of conformational changes of biomolecules in the gas phase, which are consistent with a model of intermediate state formation as a function of temperature.

Journal ArticleDOI
TL;DR: Inspection of the electron capture dissociation (ECD) spectra of doubly-protonated peptides reveals extensive secondary fragmentation and suggests that the fragmentation channels available following electron capture depend somewhat on the individual peptide structure and have mechanistic implications.

Journal ArticleDOI
TL;DR: In this article, electron impact ionization cross sections for fragments of the DNA, the bases adenine, cytosine, guanine and thymine and the sugarphosphate backbone, have been calculated using the Deutsch-Mark (DM) and the Binary-Encounter-Bethe (BEB) formalism.

Journal ArticleDOI
TL;DR: In this paper, the authors discuss the potential of using traps in the opposite regime where space charges dominate and so-called ion Coulomb crystals form (at temperatures about ∼10mK).

Journal ArticleDOI
TL;DR: In this article, the authors experimentally bracketed the gas phase Li+, Na+, K+, Rb+, and Cs+ affinities of dibenzo-18-crown-6 in the order 15- crown -5 (15 C 5) and 18-c6 crown -6 ( DB 18 C 6) crown-6 (18 C 6), and calculated the enthalpies of binding between these metal ions and DB18C6 using both the LANL2DZ basis set and a modified version of the 6-31+G�

Journal ArticleDOI
TL;DR: In this article, a molecular dynamics simulation technique has been applied to investigate fundamental aspects of matrix-assisted laser desorption, and the results on the fluence dependence of the ablation/desorption yields and composition of the ejected plume are compared with mass spectrometry and trapping plate experiments.

Journal ArticleDOI
TL;DR: In this article, laser ablation (LA) ICP-MS was combined with isotope dilution for the ultratrace level determination of 239 Pu, 240 Pu and 241 Am on the surface of targets after electroplating.

Journal ArticleDOI
TL;DR: Inorganic mass spectrometric methods are widely used for the multielemental determination of elements at the trace and ultratrace level in high-purity materials (e.g., conducting, semiconducting and nonconducting solid samples, high purity water, organic solutions and solvents).

Journal ArticleDOI
TL;DR: A review of advances in MALDI of synthetic polymers is presented in this paper, where the authors focus on areas where there has been significant progress and/or where some opportunities lie.

Journal ArticleDOI
TL;DR: In this paper, the authors explore the potential of SIFT mass spectrometry (SIFT-MS) for analysing terpenes in air and conclude that SIFT can only be used to estimate the concentration of total terphenes present in an air sample using H 3 O + and NO + ions, with only limited capability to distinguish between paired terpene isomers.