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Showing 1 to 12 of 409 entries
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Matrix-assisted laser desorption/ionization, nanostructure-assisted laser desorption/ionization and carbon nanohorns in the detection of antineoplastic drugs. 1. The cases of irinotecan, sunitinib and 6-alpha-hydroxy paclitaxel.

European journal of mass spectrometry (Chichester, England)

Traldi P, Calandra E, Crotti S, Agostini M, Nitti D, Roverso M, Toffoli G, Marangon E, Posocco B.
PMID: 25905869
Eur J Mass Spectrom (Chichester). 2014;20(6):445-59. doi: 10.1255/ejms.1302.

The development of surface-assisted laser desorption/ionization (SALDI) methodologies in mass spectrometry allows, in principle, the development of new analytical approaches to qualitative and quantitative measurements on small molecules. Some of these methods have been applied to characterize two antineoplastic...

Electrospray ionization mass spectrometry of non-covalent complexes formed between N-alkylimidazolium-containing zwitterionic sulfonates and protonated bases.

European journal of mass spectrometry (Chichester, England)

Podjava A, Kistkin S, Ausekle E, Priede E, Mekss P, Zicmanis A.
PMID: 25905871
Eur J Mass Spectrom (Chichester). 2014;20(6):467-75. doi: 10.1255/ejms.1303.

This paper describes non-covalent complexes between zwitterionic 3-(1-alkyl-3N-imidazolio)- propane-1-sulfonates and different amines. Electrospray ionization (ESI) mass spectrometry and collision- induced dissociation were used to measure the stability of such complexes in solution and in the gas phase. Generally, zwitterionic...

Age-related changes in the lateral lipid distribution in a human lens described by mass spectrometry imaging.

European journal of mass spectrometry (Chichester, England)

Pol J, Faltyskova H, Krasny L, Volný M, Vlacil O, Hajduch M, Lemr K, Havlicek V.
PMID: 26307709
Eur J Mass Spectrom (Chichester). 2015;21(3):297-303. doi: 10.1255/ejms.1350.

The lateral lipid distribution in eye lenses of three human donors were studied by matrix-assisted laser desorption ionization imaging mass spectrometry using a high mass resolution. By using exact mass measurements this study shows the relationship between the aging...

Direct gas-phase detection of nerve and blister warfare agents utilizing active capillary plasma ionization mass spectrometry.

European journal of mass spectrometry (Chichester, England)

Wolf JC, Schaer M, P Siegenthaler P, Zenobi R.
PMID: 26307710
Eur J Mass Spectrom (Chichester). 2015;21(3):305-12. doi: 10.1255/ejms.1347.

Ultrasensitive direct gas-phase detection of chemical warfare agents (CWAs) is demonstrated utilizing active capillary plasma ionization and triple quadrupole mass spectrometry (MS) instrumentation. Four G- agents, two V-agents and various blistering agents [including sulfur mustard (HD)] were detected directly...

Determination of traces of uranium and thorium in titanium and copper used for the construction of the Russian Emission Detector 100 by inductively coupled plasma mass spectrometry.

European journal of mass spectrometry (Chichester, England)

Poteshin SS, Sysoev AA, Lagunov SS, Sereda A, Sosnovtsev VV, Bolozdynya AI, Efremenko YB.
PMID: 26307714
Eur J Mass Spectrom (Chichester). 2015;21(3):335-40. doi: 10.1255/ejms.1314.

The Russian Emission Detector 100 (RED-100) under construction at the National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) is designed to detect the presently undiscovered effect of coherent neutrino scattering. One of the factors limiting the sensitivity of...

Unveiling the intricacies of the curved-field ion mirror.

European journal of mass spectrometry (Chichester, England)

Maechler L, Fillipov I, Derrick PJ.
PMID: 26307692
Eur J Mass Spectrom (Chichester). 2015;21(3):115-23. doi: 10.1255/ejms.1352.

In time-of-flight (ToF) mass spectrometry, non-linear ion mirrors, i.e. mirrors that produce a non-linear potential in which the ions fly, can focus ions exhibiting a very broad kinetic energy distribution. Besides the quadratic potential, the so-called curved field has...

How to deal with the "matrix effect" as an unavoidable phenomenon.

European journal of mass spectrometry (Chichester, England)

Ryska M.
PMID: 26307723
Eur J Mass Spectrom (Chichester). 2015;21(3):423-32. doi: 10.1255/ejms.1355.

Adsorption effects in the chromatographic system and/or ion source may play a very important role in the ionization processes of liquid chromatography/mass spectrometry. They have been illustrated and considered as matrix effects extensively. These effects cannot be simply removed...

Aluminum monocation basicity and affinity scales.

European journal of mass spectrometry (Chichester, England)

Gal JF, Yáñez M, Mó O.
PMID: 26307732
Eur J Mass Spectrom (Chichester). 2015;21(3):517-32. doi: 10.1255/ejms.1321.

The experimental aspects of the determination of thermochemical data for the attachment of the aluminum monocation Al(+) to neutral atoms and molecules are reviewed. Literature aluminum cation affinities (enthalpy scale) and basicities (Gibbs energy scale) are tabulated and discussed....

Unimolecular dissociation of anions derived from maleic acid (MaH2) in the gas phase: MaH- and MaMgCl--- relationship to Grignard chemistry and reductive CO2 fixation.

European journal of mass spectrometry (Chichester, England)

Miller GB, Fäseke V, Uggerud E.
PMID: 26307734
Eur J Mass Spectrom (Chichester). 2015;21(3):545-56. doi: 10.1255/ejms.1325.

We have conducted collision induced dissociation experiments on the hydrogen maleate anion (MaH(-), m/z = 115) and the anionic maleate MgCl complex (MaMgC(-), m/z = 173). In addition, we have computationally investigated the observed fragmentation reactions. We find that...

Isomerization of metastable amine radical cations by dissociation-recombination.

European journal of mass spectrometry (Chichester, England)

Pedersen AH, Nielson CB, Bojesen G, Hammerum S.
PMID: 26307742
Eur J Mass Spectrom (Chichester). 2015;21(3):635-9. doi: 10.1255/ejms.1342.

The metastable molecular ions of primary aliphatic amines branched at C2 can isomerize by cleavage-recombination, thereby facilitating fragmentation reactions that require less energy than simple cleavage of the initial molecular ion. This process complements the reactions described by Audier...

Observed adducts on positive mode direct analysis in real time mass spectrometry - Proton/ammonium adduct selectivities of 600-sample in-house chemical library.

European journal of mass spectrometry (Chichester, England)

Sugimura N, Furuya A, Yatsu T, Igarashi Y, Aoyama R, Izutani C, Yamamoto Y, Shibue T.
PMID: 28657446
Eur J Mass Spectrom (Chichester). 2017 Feb;23(1):4-10. doi: 10.1177/1469066717693851. Epub 2017 Jan 01.

In this study, direct analysis in real time adduct selectivities of a 558 in-house high-resolution mass spectrometry sample library was evaluated. The protonated molecular ion ([M + H]

Comprehensive chemical comparison of fuel composition and aerosol particles emitted from a ship diesel engine by gas chromatography atmospheric pressure chemical ionisation ultra-high resolution mass spectrometry with improved data processing routines.

European journal of mass spectrometry (Chichester, England)

Rüger CP, Schwemer T, Sklorz M, O'Connor PB, Barrow MP, Zimmermann R.
PMID: 28657450
Eur J Mass Spectrom (Chichester). 2017 Feb;23(1):28-39. doi: 10.1177/1469066717694286. Epub 2017 Jan 01.

The analysis of petrochemical materials and particulate matter originating from combustion sources remains a challenging task for instrumental analytical techniques. A detailed chemical characterisation is essential for addressing health and environmental effects. Sophisticated instrumentation, such as mass spectrometry coupled...

Showing 1 to 12 of 409 entries