Jeremy P. Koelmel
Associate Research Scientist in Epidemiology (Environmental Health)Cards
About
Research
Publications
2026
Quantifying PFAS-Omics Burden Scores for Nontargeted Analysis Using Multidimensional Item Response Theory: An Exploratory Analysis of Novel and Legacy PFAS in Cord Blood
Liu S, Chen Y, Feuerstahler L, Koelmel J, Pollitt K, Xu Y, Lanphear B, Yolton K, Chen A, Pennell K, Braun J, Manz K. Quantifying PFAS-Omics Burden Scores for Nontargeted Analysis Using Multidimensional Item Response Theory: An Exploratory Analysis of Novel and Legacy PFAS in Cord Blood. Environmental Science And Technology 2026, 60: 6322-6340. PMID: 41705714, DOI: 10.1021/acs.est.5c06490.Peer-Reviewed Original ResearchApproaching a 0% False Positive Rate for PFAS Determination Leveraging Only MS1 Data
Schiessel D, Chevallier O, Kummer M, Liu S, Chang P, Pyke J, Klein C, Rodowa A, Ragland J, Godri D, Stelben P, Williams A, Rennie E, Pollitt K, Koelmel J. Approaching a 0% False Positive Rate for PFAS Determination Leveraging Only MS1 Data. Environmental Science And Technology 2026, 60: 5063-5074. PMID: 41612774, DOI: 10.1021/acs.est.5c12047.Peer-Reviewed Original ResearchConceptsLC-HRMS/MSHigh-resolution tandem mass spectrometryLiquid chromatography high-resolution tandem mass spectrometryTandem mass spectrometryPolyfluoroalkyl substancesMS1 dataComplex environmental matricesHomologous seriesMass spectrometryAnalysis of per-Nontargeted strategiesFormula predictionsIdentification coverageEnvironmental matricesFalse positive rateMS1SpectrometryPositive rateMeasuring the exposome: a practical guide for using wearable passive samplers to assess environmental influences
Okeme J, Lin E, Koelmel J, Guo A, Gao D, Pollitt K. Measuring the exposome: a practical guide for using wearable passive samplers to assess environmental influences. Exposome 2026, 6: osag002. DOI: 10.1093/exposome/osag002.Peer-Reviewed Original ResearchWearable passive samplersPassive samplersHealth StudyMinimum guidelinesSecondary analysisRemote communitiesVulnerable populationsMeasure exposureExposure to environmental chemicalsQuality assurance measuresExposomeLarge-scale health studiesPersonal exposureComprehensive measureAssurance measuresSampling toolEnvironmental chemicalsCost-effective approachSamplerChemical analysis approachesEnvironmental influencesAnalysis approach
2025
Lipidome changes indicate oxidative stress, inflammation, and specific loss of glycerophosphoserine inflammatory protection in patients with lupus
Koelmel J, Ramos P, Costa K, Godri-Pollitt K, Kamen D, Bowden J. Lipidome changes indicate oxidative stress, inflammation, and specific loss of glycerophosphoserine inflammatory protection in patients with lupus. Journal Of Pharmaceutical And Biomedical Analysis 2025, 270: 117302. PMID: 41389493, DOI: 10.1016/j.jpba.2025.117302.Peer-Reviewed Original ResearchActive lupusComprehensive lipidomic studyLupus patientsLipidomic studiesSystemic lupus erythematosusChronic autoimmune diseaseLipid sub-classesOxidative stressLupus nephritisIndicators of oxidative stressLupus erythematosusAutoimmune diseasesLipidomic changesNon-lupus controlsInflammatory responseLupusPatientsLipid changesPlasma samplesDisease pathogenesisTherapeutic targetInflammation suppressorsBlood plasma samplesComplex etiologyCoenzyme Q10Shedding Light on PFAS Dark Matter Using a Novel GC-HRMS Approach
Koelmel J, Lin E, Chang P, Johnson E, Stelben P, Liu S, Nishida K, Tsugawa H, Lin A, Newton S, Casey J, Nikiforov V, Roberts D, Aksenov A, Okeme J, Metayer C, Vieira V, Manz K, Braun J, Pennell K, Robey N, Bangma J, Strynar M, Townsend T, Bowden J, Pollitt K. Shedding Light on PFAS Dark Matter Using a Novel GC-HRMS Approach. Environmental Science And Technology 2025, 59: 25296-25308. PMID: 41249893, PMCID: PMC12810681, DOI: 10.1021/acs.est.5c11712.Peer-Reviewed Original ResearchConceptsHigh-resolution mass spectrometryPositive chemical ionizationElectron ionizationMass spectrometryLiquid chromatography high-resolution mass spectrometryGas chromatography high-resolution mass spectrometryFraction of PFASLC-HRMS approachPolyfluoroalkyl substancesChemical ionizationNontargeted workflowsChemical spaceFluorinated compoundsExperimental spectraBiological matricesLC-HRMSAFFF formulationsGC-HRMSIndustrial outfallsAqueous filmMunicipal leachateIonizationSpectrometryCompoundsFloor dustEmerging PFAS in songbird eggs from a Belgian hotspot site
Cappelli F, Groffen T, Buytaert J, Prinsen E, Eens M, Bervoets L, Zhao L, Yin S, Koelmel J, Kummer M, Godri Pollitt K, Covaci A. Emerging PFAS in songbird eggs from a Belgian hotspot site. Environmental Research 2025, 291: 123156. PMID: 41110788, DOI: 10.1016/j.envres.2025.123156.Peer-Reviewed Original ResearchHigh-resolution mass spectrometryNon-target analysisPolyfluoroalkyl substancesFluorochemical plantPerfluoroalkyl sulfonic acidsBird eggsSulfonic acidLiquid chromatography-mass spectrometryEnvironmental monitoring programmesLegacy polyfluoroalkyl substancesPFAS bioaccumulationChromatography-mass spectrometrySuspect screeningMass spectrometryTargeted liquid chromatography-mass spectrometryBiomonitoring toolSemi-quantificationIndustrial activitiesMonitoring programmesLC-MS/MSCompoundsBreeding seasonRisk assessmentHotspot sitesSpectrometryFluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry
Smolinski R, Koelmel J, Stelben P, Weil D, Godri D, Schiessel D, Kummer M, Stow S, Mohsin S, Royer L, McKenzie-Coe A, Lubinsky T, DeBord D, Chevallier O, Rennie E, Pollitt K, McDonough C. FluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry. Environmental Science And Technology 2025, 59: 6636-6648. PMID: 40133053, PMCID: PMC11984190, DOI: 10.1021/acs.est.4c13846.Peer-Reviewed Original ResearchConceptsCollision cross-sectionsNontargeted analysisAccurate mass matchingMass defect filteringIon mobility spectrometryHigh-resolution mass spectrometryPolyfluoroalkyl substance analysisPolyfluoroalkyl substancesMobility spectrometryDefect filteringNontargeted workflowsIon mobilityWastewater samplesMass matchingMass spectrometryPFAS analysisTrace levelsTarget annotationsComplex mixturesAnalytical chemistsIonsSpectrometryStandard mixEnvironmental samplesChemistsFilling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment
Newton S, Bowden J, Charest N, Jackson S, Koelmel J, Liberatore H, Lin A, Lowe C, Nieto S, Pollitt K, Robuck A, Rostkowski P, Townsend T, Wallace M, Williams A. Filling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment. Environmental Science & Technology Letters 2025, 12: 104-112. PMID: 40206203, PMCID: PMC11977685, DOI: 10.1021/acs.estlett.4c00930.Peer-Reviewed Original ResearchNon-target analysisLC-ESI-MSLC-MSNovel PFASsChromatography-mass spectrometryNTA studiesGC-MSTransformation productsPFAS structuresPFAS chemistryLiquid chromatography-mass spectrometryPolyfluoroalkyl substancesGC-MS methodPFAS researchGas chromatography-mass spectrometryLC-MS analysisChemical spaceParent compoundAqueous filmSpectrometryPFAS detectionsChemicalSources of PFASsCompoundsChemistry
2024
Expanding PFAS Identification with Transformation Product Libraries: Nontargeted Analysis Reveals Biotransformation Products in Mice
Liu S, Dukes D, Koelmel J, Stelben P, Finch J, Okeme J, Lowe C, Williams A, Godri D, Rennie E, Parry E, McDonough C, Pollitt K. Expanding PFAS Identification with Transformation Product Libraries: Nontargeted Analysis Reveals Biotransformation Products in Mice. Environmental Science And Technology 2024, 59: 119-131. PMID: 39704186, PMCID: PMC12097807, DOI: 10.1021/acs.est.4c07750.Peer-Reviewed Original ResearchConceptsMass spectral libraryTransformation productsLiquid chromatography-high resolution mass spectrometryProduct libraryPolyfluoroalkyl substancesBiological transformation productsSpectral libraryFragmentation rulesBehavior of PFASPotential transformation productsMass spectrometryToxicity predictionChemical subclassesReaction productsLiver S9 fractionBiotransformation productsEnzymatic reactionsMutagenic toxicityReactionMouse liver S9 fractionBiological systemsS9 fractionDealkylationChemicalSpectrometryHigh-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
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Pollitt Lab, Laboratory of Epidemiology and Public Health
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60 College Street, Rm 510
New Haven, CT 06510