Mass spectrometry molecular fingerprinting of mineral and synthetic lubricant oils

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dc.contributor.authorde Carvalho C.P.
dc.contributor.authorda Silva A.J.R.
dc.contributor.authorLima R.C.
dc.contributor.authorEberlin M.N.
dc.date.accessioned2024-03-12T19:09:56Z
dc.date.available2024-03-12T19:09:56Z
dc.date.issued2023
dc.description.abstract© 2023 John Wiley & Sons, Ltd.The molecular composition of lubricating oils has a strong impact on how automotive engines function, but the techniques used to monitor the quality parameters of these oils only inspect their gross physical–chemical properties such as viscosity, color, and bulk spectroscopy profiles; hence, bad-quality, adulterated, or counterfeit oils are hard to detect. Herein, we investigated the ability of direct infusion electrospray ionization mass spectrometry (ESI-MS) to provide simple, rapid but characteristic fingerprint profiles for such oils of the mineral and synthetic types. After a simple aqueous extraction, ESI-MS analyses, particularly in the positive ion mode, did indeed show characteristic molecular markers with unique profiles, which were confirmed and more clearly visualized by partial least squares-discriminant analysis (PLS-DA). Nuclear magnetic resonance and Fourier transform infrared-attenuated total reflection spectroscopy were also tested for the bulk samples but showed nearly identical spectra, thus failing to reveal their distinct molecular composition and to differentiate the oil samples. To simulate adulteration, mixtures of mineral and synthetic oils were also analyzed by ESI(+)-MS, and additions as low as 1% of mineral oil to synthetic oil could be detected. The technique therefore offers a simple and fast but powerful tool to monitor the molecular composition of lubricant oils, particularly vias their more polar constituents.
dc.description.issuenumber4
dc.description.volume58
dc.identifier.doi10.1002/jms.4906
dc.identifier.issn1096-9888
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34095
dc.relation.ispartofJournal of Mass Spectrometry
dc.rightsAcesso Restrito
dc.subject.otherlanguagechemometrics
dc.subject.otherlanguageESI-MS
dc.subject.otherlanguageFTIR-ATR
dc.subject.otherlanguagelubricant oil
dc.subject.otherlanguagemass spectrometry
dc.subject.otherlanguageNMR
dc.titleMass spectrometry molecular fingerprinting of mineral and synthetic lubricant oils
dc.typeArtigo
local.scopus.citations1
local.scopus.eid2-s2.0-85150083517
local.scopus.subjectAutomotive engine
local.scopus.subjectChemometrices
local.scopus.subjectElectrospray ionization mass spectrometry
local.scopus.subjectFT-IR-ATR
local.scopus.subjectLubricant oil
local.scopus.subjectMolecular compositions
local.scopus.subjectMolecular fingerprinting
local.scopus.subjectQuality parameters
local.scopus.subjectSimple++
local.scopus.subjectSynthetic oil
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85150083517&origin=inward
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