2024
High-Resolution Mass Spectrometry for Human Exposomics: Expanding Chemical Space Coverage
Lai Y, Koelmel J, Walker D, Price E, Papazian S, Manz K, Castilla-Fernández D, Bowden J, Nikiforov V, David A, Bessonneau V, Amer B, Seethapathy S, Hu X, Lin E, Jbebli A, McNeil B, Barupal D, Cerasa M, Xie H, Kalia V, Nandakumar R, Singh R, Tian Z, Gao P, Zhao Y, Froment J, Rostkowski P, Dubey S, Coufalíková K, Seličová H, Hecht H, Liu S, Udhani H, Restituito S, Tchou-Wong K, Lu K, Martin J, Warth B, Pollitt K, Klánová J, Fiehn O, Metz T, Pennell K, Jones D, Miller G. High-Resolution Mass Spectrometry for Human Exposomics: Expanding Chemical Space Coverage. Environmental Science And Technology 2024, 58: 12784-12822. PMID: 38984754, PMCID: PMC11271014, DOI: 10.1021/acs.est.4c01156.Peer-Reviewed Original ResearchHigh-resolution mass spectrometryChemical spaceCoverage of chemical spaceMass spectrometryAccurate mass measurementsChemical space coverageNon-target approachHuman exposomeAnalytical workflowMass measurementsDisease outcomeGenetic driversSpectrometryHarmonized workflowMulti-omics integrationRetrospective validationCare providersChemistsMetabolomicsSpace coverageBiomoleculesHypothesis-drivenDisease
2023
Non-targeted analysis (NTA) and suspect screening analysis (SSA): a review of examining the chemical exposome
Manz K, Feerick A, Braun J, Feng Y, Hall A, Koelmel J, Manzano C, Newton S, Pennell K, Place B, Godri Pollitt K, Prasse C, Young J. Non-targeted analysis (NTA) and suspect screening analysis (SSA): a review of examining the chemical exposome. Journal Of Exposure Science & Environmental Epidemiology 2023, 33: 524-536. PMID: 37380877, PMCID: PMC10403360, DOI: 10.1038/s41370-023-00574-6.Peer-Reviewed Original ResearchConceptsHigh-resolution mass spectrometryNon-targeted analysisExposure mediaChemical spaceSoils/sedimentsMass spectrometryPolyfluoroalkyl substancesSemi-volatile organic compoundsChemical exposomePolyaromatic hydrocarbonsLiquid chromatographyEnvironmental mediaOrganic compoundsGC-HRMSHuman exposureLC-HRMSAnalytical platformConsumer productsChemical exposureSedimentsPesticidesEnvironmental chemicalsChemicalsExposure sourcesSpectrometry
2022
An actionable annotation scoring framework for gas chromatography-high-resolution mass spectrometry
Koelmel J, Xie H, Price E, Lin E, Manz K, Stelben P, Paige M, Papazian S, Okeme J, Jones D, Barupal D, Bowden J, Rostkowski P, Pennell K, Nikiforov V, Wang T, Hu X, Lai Y, Miller G, Walker D, Martin J, Pollitt K. An actionable annotation scoring framework for gas chromatography-high-resolution mass spectrometry. Exposome 2022, 2: osac007. PMID: 36483216, PMCID: PMC9719826, DOI: 10.1093/exposome/osac007.Peer-Reviewed Original ResearchGas chromatography-high resolution mass spectrometryMass spectrometryHigh-resolution mass spectrometryPositive chemical ionizationResolution mass spectrometryChemical ionizationChemical dataElectron ionizationGC-HRMSMolecular ionsAccurate massNegative ionizationExposomics studiesChemical identificationCompound annotationChemical annotationRetention indicesIsotopic patternsSpectrometryIonizationRetention timeMolecular levelConfident annotationComprehensive characterizationCorresponding biological responsesAssessing the External Exposome Using Wearable Passive Samplers and High-Resolution Mass Spectrometry among South African Children Participating in the VHEMBE Study
Koelmel JP, Lin EZ, DeLay K, Williams AJ, Zhou Y, Bornman R, Obida M, Chevrier J, Pollitt K. Assessing the External Exposome Using Wearable Passive Samplers and High-Resolution Mass Spectrometry among South African Children Participating in the VHEMBE Study. Environmental Science And Technology 2022, 56: 2191-2203. PMID: 35089017, DOI: 10.1021/acs.est.1c06481.Peer-Reviewed Original ResearchConceptsHigh-resolution mass spectrometryMass spectrometryAirborne chemical exposuresPassive samplersVenda Health ExaminationChemical exposureChildren's personal exposureSpectrometryPersonal exposureChemicalsMolecular levelSouth African childrenMiddle-income countriesHealth examinationExternal exposomeCombustion productsAfrican childrenAirborne chemicalsHealth effectsEnvironmental exposuresDyeAssessment periodPlasticizerExposureDichlorodiphenyldichloroethane
2021
50 chemical exposures of concern discovered using wearable passive samplers and gas chromatography high-resolution mass spectrometry in South African children
Koelmel J, Lin E, Delay K, Williams A, Zhou Y, Bornman R, Obida M, Chevrier J, Godri Pollitt K. 50 chemical exposures of concern discovered using wearable passive samplers and gas chromatography high-resolution mass spectrometry in South African children. ISEE Conference Abstracts 2021, 2021 DOI: 10.1289/isee.2021.o-lt-106.Peer-Reviewed Original ResearchA Novel Technique for Redox Lipidomics Using Mass Spectrometry: Application on Vegetable Oils Used to Fry Potatoes
Koelmel JP, Aristizabal-Henao JJ, Ni Z, Fedorova M, Kato S, Otoki Y, Nakagawa K, Lin EZ, Pollitt K, Vasiliou V, Guingab JD, Garrett TJ, Williams TL, Bowden JA, Penumetcha M. A Novel Technique for Redox Lipidomics Using Mass Spectrometry: Application on Vegetable Oils Used to Fry Potatoes. Journal Of The American Society For Mass Spectrometry 2021, 32: 1798-1809. PMID: 34096708, DOI: 10.1021/jasms.1c00150.Peer-Reviewed Original ResearchHead, Shoulders, Knees, and Toes: Placement of Wearable Passive Samplers Alters Exposure Profiles Observed
Koelmel JP, Lin EZ, Nichols A, Guo P, Zhou Y, Pollitt K. Head, Shoulders, Knees, and Toes: Placement of Wearable Passive Samplers Alters Exposure Profiles Observed. Environmental Science And Technology 2021, 55: 3796-3806. PMID: 33625210, DOI: 10.1021/acs.est.0c05522.Peer-Reviewed Original ResearchConceptsSemivolatile organic compoundsOrganic compoundsGas chromatography-high resolution mass spectrometryPassive samplersHigh-resolution mass spectrometryVolatile organic compoundsPersonal exposure profilesChemicals of concernMass spectrometryChemicalsExposure dynamicsExposure profilesCompoundsMajor risk factorComprehensive characterizationPersonal exposureAirborne contaminantsContaminant exposureRisk factorsInhalation routeEpidemiological studiesChemical exposureSpectrometrySamplerParticipants' wrists
2020
Dried blood spots for the identification of bioaccumulating organic compounds: Current challenges and future perspectives
Jobst KJ, Arora A, Pollitt KG, Sled JG. Dried blood spots for the identification of bioaccumulating organic compounds: Current challenges and future perspectives. Current Opinion In Environmental Science & Health 2020, 15: 66-73. PMID: 33073071, PMCID: PMC7560987, DOI: 10.1016/j.coesh.2020.07.001.Peer-Reviewed Original ResearchOrganic compoundsTrace level contaminantsAnalytical chemistryArt mass spectrometryMass spectrometryField of exposomicsChemical pollutantsMost environmental exposuresCompoundsCurrent challengesConstituent compoundsFuture perspectivesChemistryDBS analysisSpectrometryPollutantsExogenous chemicalsContaminantsChemicalsDry blood spotsExposomicsMixtureExposomeReliable approach