Analysis of Triazines and Associated Metabolites with Electrospray Ionization Field-Asymmetric Ion Mobility Spectrometry/Mass Spectrometry

Mie, Axel; Sandulescu, Madalina; Mathiasson, Lennart; Emnéus, Jenny; Reimann, C.T.

doi:10.2116/analsci.24.973

Cited by 12 publications

(5 citation statements)

References 36 publications

(40 reference statements)

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“…Ion mobility spectrometry coupled with mass spectrometry (IM-MS) is a rapid two dimensional analytical tool and has been applied to various biological (71–73), pharmaceutical (74–78), environmental (79–82) and security related applications (83–85). Feasibility of using IM-MS as a rapid analytical tool for metabolome profiling has been recently demonstrated where rapid separation and detection of hundreds of metabolites present in intracellular E-coli metabolome along with simultaneous separation of isomeric and isobaric metabolites was achieved (86).…”

Section: Introductionmentioning

confidence: 99%

Metabolic profiling of human blood by high-resolution ion mobility mass spectrometry (IM-MS)

Dwivedi

Schultz

Hill

2010

International Journal of Mass Spectrometry

148

132

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A high resolution ion mobility time-of-flight mass spectrometer with electrospray ionization source (ESI-IM-MS) was evaluated as an analytical method for rapid analysis of complex biological samples such as human blood metabolome was investigated. The hybrid instrument (IM-MS) provided an average ion mobility resolving power of ~90 and a mass resolution of ~1500 (at m/z 100). A few µL of whole blood was extracted with methanol, centrifuged and infused into the IM-MS via an electrospray ionization source. Upon IM-MS profiling of the human blood metabolome approximately 1,100 metabolite ions were detected and 300 isomeric metabolites separated in short analyses time (30 minutes). Estimated concentration of the metabolites ranged from the low micromolar to the low nanomolar level. Various classes of metabolites (amino acids, organic acids, fatty acids, carbohydrates, purines and pyrimidines etc) were found to form characteristic mobility-mass correlation curves (MMCC) that aided in metabolite identification. Peaks corresponding to various sterol derivatives, estrogen derivatives, phosphocholines, prostaglandins, and cholesterol derivatives detected in the blood extract were found to occupy characteristic two dimensional IM-MS space. Low abundance metabolite peaks that can be lost in MS random noise were resolved from noise peaks by differentiation in mobility space. In addition, the peak capacity of MS increased six fold by coupling IMS prior to MS analysis.

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Section: Introductionmentioning

confidence: 99%

Metabolic profiling of human blood by high-resolution ion mobility mass spectrometry (IM-MS)

Dwivedi

Schultz

Hill

2010

International Journal of Mass Spectrometry

148

132

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“…In general, reports of correlation of CV and m/z are scarce and sometimes conflicting. For example, for CV-m/z correlations for triazine pollutant compounds [12], and in homologues series of lipids [13] have opposing trends reported.…”

Section: Introductionmentioning

confidence: 99%

Predicting Compensation Voltage for Singly-charged Ions in High-Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS)

Aksenov

Kapron²,

Davis

2012

J. Am. Soc. Mass Spectrom.

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Correlation between compensation voltage (CV) and the m/z ratio of singly-charged ions was elucidated. The experimental data for various alkylammonium homologues and various pharmaceutical compounds were used to construct empirical calibration curves that were fit using commercial regression analysis software packages. The best fit equations were applied to calculate the CV differences (ΔCV) in pure N 2 and N 2 /He 50/50 carrier gasses and CV values for a variety of compounds using only m/z values. The calculated values were in good agreement with experimental data and ΔCV values exhibited a very strong correlation with m/z. Application of these empirical calculations may provide a powerful CV prediction tool for researchers using high-field asymmetric waveform ion mobility spectrometry (FAIMS) and increase the value of FAIMS as an analytical method.

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“…The CV is a compound‐dependent parameter 13. Many types of compounds have already been studied by FAIMS, such as pharmaceuticals,14 environmental contaminants,15 pesticides16 and phosphopeptides 5, 17. Although there have been studies of drugs and their metabolites, this is the first report of the exploration of the behaviour of a series of related ions in FAIMS.…”

mentioning

confidence: 97%

Behaviour of tetraalkylammonium ions in high‐field asymmetric waveform ion mobility spectrometry

Aksenov¹,

Kapron

2010

Rapid Comm Mass Spectrometry

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High-field asymmetric waveform ion mobility spectrometry (FAIMS) is an ion-filtering technique recently adapted for use with liquid chromatography/mass spectrometry (LC/MS) to remove interferences during analysis of complex matrices. This is the first systematic study of a series of singly charged tetraalkylammonium ions by FAIMS-MS. The compensation voltage (CV) is the DC offset of the waveform which permits the ion to emerge from FAIMS and it was determined for each member of the series under various conditions. The electrospray ionization conditions explored included spray voltage, vaporizer temperature, and sheath and auxiliary gas pressure. The FAIMS conditions explored included carrier gas flow rate, electrode temperature and composition of the carrier gas. Optimum desolvation was achieved using sufficient carrier gas (flow rate > or = 2 L/min) to ensure stable response. Low-mass ions (m/z 100-200) are more susceptible to changes in electrode temperature and gas composition than high mass ions (m/z 200-700). As a result of this study, ions are reliably analyzed using standard FAIMS conditions (dispersion voltage -5000 V, carrier gas flow rate 3 L/min, 50% helium/50%nitrogen, inner electrode temperature 70 degrees C and outer electrode temperature 90 degrees C). Variation of FAIMS conditions may be of great use for the separation of very low mass tetraalkylammonium (TAA) ions from other TAA ions. The FAIMS conditions do not appear to have a major effect on higher mass ions.

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Analysis of Triazines and Associated Metabolites with Electrospray Ionization Field-Asymmetric Ion Mobility Spectrometry/Mass Spectrometry

Cited by 12 publications

References 36 publications

Metabolic profiling of human blood by high-resolution ion mobility mass spectrometry (IM-MS)

Metabolic profiling of human blood by high-resolution ion mobility mass spectrometry (IM-MS)

Predicting Compensation Voltage for Singly-charged Ions in High-Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS)

Behaviour of tetraalkylammonium ions in high‐field asymmetric waveform ion mobility spectrometry

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