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dc.contributor.authorgachumi, george
dc.contributor.authorPurves, Randy
dc.contributor.authorHopf, Carston
dc.contributor.authorEl-Aneed, Anas
dc.identifier.citationGachumi G., Purves R.W., Hopf C., and El-Aneed A. (2020). Fast Quantification Without Conventional Chromatography, the Growing Power of Mass Spectrometry. Anal. Chem. 2020, 92, 13, 8628–8637. 10.1021/acs.analchem.0c00877en_US
dc.description.abstractMass spectrometry (MS) in hyphenated techniques is widely accepted as the gold standard quantitative tool in life sciences. However, MS possesses intrinsic analytical capabilities that allow it to be a stand-alone quantitative technique, particularly with current technological advancements. MS has a great potential for simplifying quantitative analysis without the need for tedious chromatographic separation. Its selectivity relies on multistage MS analysis (MSn), including tandem mass spectrometry (MS/MS), as well as the ever-growing advancements of high-resolution MS instruments. This perspective describes various analytical platforms that utilize MS as a stand-alone quantitative technique, namely, flow injection analysis (FIA), matrix assisted laser desorption ionization (MALDI), including MALDI-MS imaging and ion mobility, particularly high-field asymmetric waveform ion mobility spectrometry (FAIMS). When MS alone is not capable of providing reliable quantitative data, instead of conventional liquid chromatography (LC)-MS, the use of a guard column (i.e., fast chromatography) may be sufficient for quantification. Although the omission of chromatographic separation simplifies the analytical process, extra procedures may be needed during sample preparation and clean-up to address the issue of matrix effects. The discussion of this manuscript focuses on key parameters underlying the uniqueness of each technique for its application in quantitative analysis without the need for a chromatographic separation. In addition, the potential for each analytical strategy and its challenges are discussed as well as improvements needed to render them as mainstream quantitative analytical tools. Overcoming the hurdles for fully validating a quantitative method will allow MS alone to eventually become an indispensable quantitative tool for clinical and toxicological studies.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC) Discovery grant. Ministry of Agriculture, Government of Saskatchewan, Canada for an Agriculture Development Fund (ADF) grant. German Federal Ministry of Education and Research (BMBF).en_US
dc.publisherACS Publicationsen_US
dc.rightsAttribution-NonCommercial-NoDerivs 2.5 Canada*
dc.subjectMass spectrometryen_US
dc.subjectQuantitative analysisen_US
dc.titleFast Quantification Without Conventional Chromatography, The Growing Power of Mass Spectrometryen_US
dc.description.versionPeer Revieweden_US

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