نتایج جستجو برای: q tof ms

تعداد نتایج: 251600  

2011
Annette Michalski Eugen Damoc Jan-Peter Hauschild Oliver Lange Andreas Wieghaus Alexander Makarov Nagarjuna Nagaraj Juergen Cox Matthias Mann Stevan Horning

Mass spectrometry-based proteomics has greatly benefitted from enormous advances in high resolution instrumentation in recent years. In particular, the combination of a linear ion trap with the Orbitrap analyzer has proven to be a popular instrument configuration. Complementing this hybrid trap-trap instrument, as well as the standalone Orbitrap analyzer termed Exactive, we here present couplin...

Journal: :Food chemistry 2015
L Cherta T Portolés E Pitarch J Beltran F J López C Calatayud B Company F Hernández

The potential of an advanced analytical strategy based on the use of gas chromatography (GC) coupled to high resolution mass spectrometry (HRMS) with two different analyzers and ionization sources has been investigated and applied to the non-target analysis of food packaging contaminants. Initially, the approach based on GC-time-of-flight (TOF) MS with electron ionization (EI) source allowed pe...

Journal: :Analytical chemistry 2002
Shona McSheehy Joanna Szpunar Ryszard Lobinski Violette Haldys Jeanine Tortajada John S Edmonds

The identification of water-soluble arsenic species in a kidney of the Tridacna clam by electrospray quadrupole/time-of-flight mass spectrometry (ES Q-TOF MS) was investigated. The species were isolated by three-dimensional LC (size exclusion-anion exchange-cation exchange); the elution of arsenic was monitored by ICPMS. The average accuracy and precision of the molecular mass measurements, stu...

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