Analysis for daminozide in apple juice by anion-exchange chromatography-particle beam mass spectrometry

Kim, In Suk; Sasinos, Fassil I.; Stephens, Robert D.; Brown, Mark A.

doi:10.1021/jf00095a014

Cited by 39 publications

(2 citation statements)

References 5 publications

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“…Linearity. In the literature, nonlinear calibration curves have been reported at low concentration levels under LC/PB-MS [3][4][5][6][7][8] as well as under SFC/PB-MS conditions, 9 resulting in poor detection limits, reduced dynamic range, and quantification difficulties. In a recent extensive review, Creaser and Stygall 25 discussed these phenomena.…”

Section: Resultsmentioning

confidence: 99%

“…The use of PB interfaces has shown great promise, since the EI spectra obtained contain the fragmentation patterns necessary for unambiguous identification. However, quantitative analysis has been limited by fluctuations in absolute response observed in intra- and interday runs and nonlinearity at lower concentrations. − Besides, commercial instruments are not compatible with capillary flows resulting from microcolumn LC (micro-LC) and capillary electrophoresis (CE). On the other hand, in modern analysis, these capillary separation techniques are convincingly being used.…”

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confidence: 99%

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Eluent Jet Interface for Combining Capillary Liquid Flows with Electron Impact Mass Spectrometry

Kientz¹,

Hulst²,

Jong³

et al. 1996

Anal. Chem.

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A new interface based on an eluent jet in combination with a conventional gas chromatography momentum separator for use with electron impact mass spectrometry is described. The formation of the eluent jet is based on radio frequency inductive heating. The aerosol formation in the interface is discussed in relation to commercial particle beam (PB) interfaces. The interface is tested in combination with electron impact mass spectrometry using flow injection analysis at flow rates in the range of 5-15 µL/ min commonly encountered in microcolumn liquid chromatography. Electron impact spectra at 1-10-ng levels are found to be comparable with reference spectra. In the single-ion mode, 50 pg of caffeine is detectable with a signal-to-noise ratio of 3:1. Contrary to many other PB systems, linear calibration plots are obtained in the tested range of 3-200 ng of caffeine.In 1984, Willoughby and Browner 1 introduced a new mass spectrometer interface that allowed both electron impact (EI) and chemical ionization (CI) in combination with liquid chromatography (LC). Based on this principle, many commercially available particle beam (PB) interfaces are successfully being used for the analysis of molecules that are not compatible with gas chromatography/mass spectrometry (GC/MS) methods. The systems are based on eluent nebulization, either pneumatical or by thermospray, into a desolvation chamber which is connected to a momentum separator where the high molecular weight analytes are preferentially transferred to the MS ion source, while the low molecular weight solvent molecules are efficiently pumped away. The use of PB interfaces has shown great promise, since the EI spectra obtained contain the fragmentation patterns necessary for unambiguous identification. However, quantitative analysis has been limited by fluctuations in absolute response observed in intraand interday runs and nonlinearity at lower concentrations. [2][3][4][5][6][7][8][9]

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Eluent Jet Interface for Combining Capillary Liquid Flows with Electron Impact Mass Spectrometry

Kientz¹,

Hulst²,

Jong³

et al. 1996

Anal. Chem.

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Application of IC‐MS in Organic Environmental Geochemistry

Fischer

2016

Application of IC‐MS and IC‐ICP‐MS in Environmental Research

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Palladium‐Catalyzed Selective Hydroamination of Aliphatic Alkenes with Hydrazides

Xia

Lin

et al. 2021

Asian J Org Chem

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The first facile and efficient palladium-catalyzed selective hydroamination of aliphatic alkenes with hydrazides as nitrogen-based reaction partners has been described. This method provides a divergent and regioselective access to a variety of γand δ-hydrazide substituted amide derivatives.The 8-aminoquinolyl directing group could be readily removed to afford the corresponding γand δ-hydrazide substituted carboxylic acid derivatives that are commonly seen in drug molecules and other bioactive compounds.

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Analysis for daminozide in apple juice by anion-exchange chromatography-particle beam mass spectrometry

Cited by 39 publications

References 5 publications

Eluent Jet Interface for Combining Capillary Liquid Flows with Electron Impact Mass Spectrometry

Eluent Jet Interface for Combining Capillary Liquid Flows with Electron Impact Mass Spectrometry

Application of IC‐MS in Organic Environmental Geochemistry

Palladium‐Catalyzed Selective Hydroamination of Aliphatic Alkenes with Hydrazides

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