Study of ghost peaks resulting from space charge and non-linear fields in an ion trap mass spectrometer

Kocher, Florence; Favre, Amélie; Gonnet, Florence; Tabet, Jean‐Claude

doi:10.1002/(sici)1096-9888(1998100)33:10<921::aid-jms700>3.0.co;2-s

Cited by 19 publications

(11 citation statements)

References 5 publications

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“…A complication is that not all processes taking place inside the ion trap are well understood. Main problems described in the literature are ‘black canyons’,3 ‘ghost peaks’4 and ‘chemical mass shift’ 5. Here, we describe the appearance of unusual fragments in the MS n spectra for the first time, which may complicate or confuse mass spectral interpretation.…”

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confidence: 84%

Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Kölliker

Oehme

Merz

2001

Rapid Comm Mass Spectrometry

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During the structural elucidation of carbonyl-2,4-dinitrophenylhydrazone derivatives in the low-ng range by multiple mass spectrometry combined with high performance liquid chromatography (HPLC/MS n ) some fragments were detected which were difficult to explain by ordinary fragmentation rules. Atmospheric pressure chemical ionization in the negative ion mode was applied. The ion formation was studied by labelling the parent compounds with D, 13C and 15 N and recording the MS/MS, MS 3 and MS 4 spectra. This allowed an investigation of the detailed fragmentation of 2,4-dinitrophenylhydrazine and its propanone derivative as well as the structures of the MS 2 and MS 3 product ions. A highly reactive product ion was found which undergoes unexpected reactions inside the ion trap of an HPLC/MS n system. In addition, reactions of MS n fragments with solvents or species generated in situ in the ion source and/or the ion trap were observed. It is demonstrated that unusual fragments in the MS/MS or MS n spectra of a compound may be formed by such reactions and that the eluent used for HPLC might have an influence on the observed fragmentation even if the mass spectrum itself is completely free from adducts.

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confidence: 84%

Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Kölliker

Oehme

Merz

2001

Rapid Comm Mass Spectrometry

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“…Previous literature reported that a stretched geometry could compensate for the electric field weakening caused by holes and slots in the trap electrodes, and to improve both 3D and 2D ion trap performance. [17,[41][42][43][44][45][46][47] In this study, y 0 was fixed at 5 mm, and x 0 was changed from 5 mm to 7.5 mm, so we could have different stretch degrees in the x-direction. The electric field distribution in every cRIT is shown in Table 2.…”

Section: Mass Resolution and Geometry Optimizationmentioning

confidence: 99%

Performance and geometry optimization of the ceramic‐based rectilinear ion traps

Wang

Ding

2012

Rapid Comm Mass Spectrometry

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“…6(b) and 6(d)). However, this decrease in the auxiliary RF for the forward scan gives incomplete ejection of ions at the non‐linear resonance β z = 2/3, and ghost peaks26,27 are observed. This experiment demonstrates that decreasing the auxiliary RF to optimize the reverse scan mode can decrease the propensity of the fragile MH + ion to fragment.…”

Section: Resultsmentioning

confidence: 99%

Hysteretic behavior and strength capacity of shallowly embedded steel column bases with SFRCC slab

Cui

Nakashima

2011

Earthq Engng Struct Dyn

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A series of shallowly embedded steel column bases consisting of an exposed column base and a floor slab is tested under horizontal cyclic loading to very large deformation. The effects of floor slabs on strength and ductility are examined using concrete and Steel fiber-reinforced cementitous composites (SFRCC) for the floor slab. The elastic stiffness, maximum strength, and dissipated energy of the column bases when they include SFRCC increase by 40, 70, and 70% over those of corresponding column bases with concrete floor slab. Better bonding behavior is notable for SFRCC, and the maximum strength and dissipated energy further increase by 15-30% and 70-90%, respectively, owing to the careful arrangement of reinforcing bars. Numerical models are developed to enhance the understanding the behavior of shallowly embedded column bases. Procedures for estimating the elastic stiffness and maximum strength of shallowly embedded column bases with conventional concrete are calibrated for their applicability to those with SFRCC slab.

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Study of ghost peaks resulting from space charge and non-linear fields in an ion trap mass spectrometer

Cited by 19 publications

References 5 publications

Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Performance and geometry optimization of the ceramic‐based rectilinear ion traps

Hysteretic behavior and strength capacity of shallowly embedded steel column bases with SFRCC slab

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Study of ghost peaks resulting from space charge and non-linear fields in an ion trap mass spectrometer

Cited by 19 publications

References 5 publications

Unusual MSn fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Unusual MSn fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Performance and geometry optimization of the ceramic‐based rectilinear ion traps

Hysteretic behavior and strength capacity of shallowly embedded steel column bases with SFRCC slab

Contact Info

Product

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Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative

Unusual MSⁿ fragmentation patterns of 2,4‐dinitrophenylhydrazine and its propanone derivative