Alina Timshina, PhD
Postdoctoral AssociateAbout
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Postdoctoral Associate
Appointments
Environmental Health Sciences
Postdoctoral AssociatePrimary
Other Departments & Organizations
Education & Training
- PhD
- University of Florida, Environmental Engineering Sciences (2025)
- BFA
- University of Florida, Painting (2021)
- BS
- University of Florida, Environmental Engineering Sciences (2021)
Research
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Overview
My research utilizes a variety of high resolution mass spectrometric approaches to investigate the life cycles of persistent pollutants. In developing solutions for mitigating human and environmental exposure, it is critical to understand the transport and potential transformations of persistent chemicals, from the production and use of consumer products to their end-of-life disposal. Much of my work has focused on tracing the sources and fate of per- and polyfluoroalkyl substances (PFAS) in consumer products, water systems, and waste management scenarios such as landfilling and organics recycling. More recent work explores the human exposome by utilizing wearable passive samplers to characterize airborne exposure to a range of chemicals, including PFAS, phthalates, and pesticides.
Research at a Glance
Publications Timeline
A big-picture view of Alina Timshina's research output by year.
16Publications
231Citations
Publications
2026
Corrigendum to “Invasive Burmese pythons (Python bivittatus) as sentinels for PFAS biomonitoring in the Greater Everglades Ecosystem” [Sci. Total Environ. 1029 (2026) 181762]
Blackman L, Mehdi Q, Timshina A, Bartoszek I, Miller M, Easterling I, Olejniczak K, Aufmuth J, Bowden J. Corrigendum to “Invasive Burmese pythons (Python bivittatus) as sentinels for PFAS biomonitoring in the Greater Everglades Ecosystem” [Sci. Total Environ. 1029 (2026) 181762]. The Science Of The Total Environment 2026, 1031: 181832. PMID: 42070923, DOI: 10.1016/j.scitotenv.2026.181832.Peer-Reviewed Original ResearchInvasive Burmese pythons (Python bivittatus) as sentinels for PFAS biomonitoring in the Greater Everglades Ecosystem
Blackman L, Mehdi Q, Timshina A, Bartoszek I, Miller M, Easterling I, Olejniczak K, Aufmuth J, Bowden J. Invasive Burmese pythons (Python bivittatus) as sentinels for PFAS biomonitoring in the Greater Everglades Ecosystem. The Science Of The Total Environment 2026, 1029: 181762. PMID: 41946070, DOI: 10.1016/j.scitotenv.2026.181762.Peer-Reviewed Original ResearchCitationsAltmetricPer- and polyfluoroalkyl substances on the U.S. Department of Energy's Savannah River Site: Spatial distribution, bioavailability, co-occurrence with metals, and potential biomagnification.
Webb E, Timshina A, Ricke D, Fletcher D, Bowden J, Xu X, Parrott B. Per- and polyfluoroalkyl substances on the U.S. Department of Energy's Savannah River Site: Spatial distribution, bioavailability, co-occurrence with metals, and potential biomagnification. Environmental Toxicology And Chemistry 2026 PMID: 41872024, DOI: 10.1093/etojnl/vgag075.Peer-Reviewed Original ResearchCitationsConceptsPolyfluoroalkyl substances concentrationsSavannah River SiteU.S. Department of Energy's Savannah River SiteDepartment of Energy's Savannah River SitePolyfluoroalkyl substancesPotential biomagnificationRiver SiteLong-chain perfluoroalkyl carboxylic acidsNational Environmental Research ParkImpact stream communitiesPerfluoroalkyl carboxylic acidsPerfluorooctane sulfonic acidAnalysis of PFASsNitrogen isotopic signaturesStable isotope signaturesCo-occurrence analysisIsotopic signaturesBioavailability assessmentExposed ecosystemsEcotoxicological researchLandscape scaleMetal concentrationsEcotoxicological studiesEcosystem healthPersistent contaminants
2025
PFAS dynamics in the American black bear (Ursus americanus): Physiological stages (hyperphagia, hibernation, and post-hibernation), and temporal trends from 1989 to 2015
Mehdi Q, Blackman L, Timshina A, Boubad O, Olfenbuttel C, Kelly M, Mesa-Cruz J, Bowden J. PFAS dynamics in the American black bear (Ursus americanus): Physiological stages (hyperphagia, hibernation, and post-hibernation), and temporal trends from 1989 to 2015. The Science Of The Total Environment 2025, 1005: 180876. PMID: 41207023, DOI: 10.1016/j.scitotenv.2025.180876.Peer-Reviewed Original ResearchCitationsAn unwanted hitchhiker: assessment of per- and polyfluoroalkyl substances (PFAS) in vehicle cabin air conditioner and engine filters
Arnold J, Timshina A, Mehdi Q, Bowden J. An unwanted hitchhiker: assessment of per- and polyfluoroalkyl substances (PFAS) in vehicle cabin air conditioner and engine filters. Analytical Methods 2025, 17: 8317-8325. PMID: 41070861, DOI: 10.1039/d5ay01255d.Peer-Reviewed Original Research
2024
Statewide Surveillance and Mapping of PFAS in Florida Surface Water
Camacho C, Antonison A, Oldnettle A, Costa K, Timshina A, Ditz H, Thompson J, Holden M, Sobczak W, Arnold J, Kozakoff M, Tucker K, Brown H, Hippe R, Kennedy C, Blackman L, Borrés S, Aufmuth J, Correia K, Martinez B, Osborne T, Bowden J. Statewide Surveillance and Mapping of PFAS in Florida Surface Water. ACS ES&T Water 2024, 4: 4343-4355. DOI: 10.1021/acsestwater.4c00272.Peer-Reviewed Original ResearchCitationsAltmetricConceptsEPA maximum contaminant levelPolyfluoroalkyl substancesStatewide monitoringWater bodiesMaximum contaminant levelSurface water samplesMonitoring of water qualityFlorida water bodiesPollution sourcesContamination levelsPFAS concentrationsPerfluorooctanoic acidHigh-performance liquid chromatography-tandem mass spectrometryWater qualitySurface waterWater samplesHuman healthClimate resilienceChromatography-tandem mass spectrometryLiquid chromatography-tandem mass spectrometryFloridaSitesConcentrationEPAHotspotsHave per- and polyfluoroalkyl substances (PFAS) infiltrated Florida's freshwater springs?
Holden M, Timshina A, Mehdi Q, Cromwell L, Osborne T, Aufmuth J, Bowden J. Have per- and polyfluoroalkyl substances (PFAS) infiltrated Florida's freshwater springs? The Science Of The Total Environment 2024, 952: 175826. PMID: 39197793, DOI: 10.1016/j.scitotenv.2024.175826.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsPolyfluoroalkyl substancesFreshwater springsContamination pathwaysPerfluorobutanesulfonic acidPerfluorooctanesulfonic acidPerfluorooctanoic acidFlorida springsPresence of PFASWater sourcesQuantify PFASsVital water sourcePotential health concernClean water sourcesDrinking water consumersUltra-high performance liquid chromatography-tandem mass spectrometryWater samplesVent samplesWater usersFreshwaterChromatography-tandem mass spectrometryDrinking waterLiquid chromatography-tandem mass spectrometrySpringWater consumersFloridaIdentification and quantification of novel per- and polyfluoroalkyl substances (PFAS) contamination in a Great Lakes urban-dominated watershed
Llewellyn M, Griffin E, Caspar R, Timshina A, Bowden J, Miller C, Baker B, Baker T. Identification and quantification of novel per- and polyfluoroalkyl substances (PFAS) contamination in a Great Lakes urban-dominated watershed. The Science Of The Total Environment 2024, 941: 173325. PMID: 38797403, DOI: 10.1016/j.scitotenv.2024.173325.Peer-Reviewed Original ResearchCitationsAltmetricConceptsSurface water samplesPolyfluoroalkyl substancesRouge RiverSediment samplesPerfluorooctanesulfonic acidWater samplesPerfluorooctanoic acidGreat LakesSurface waterTransport of polyfluoroalkyl substancesPFAS burdenResistant to environmental degradationImpact of urbanizationPFAS contaminationWastewater treatment processesUS EPAPerfluorohexanoic acidAverage concentrationHealth advisoriesPFAS mixtureCongenersLake HuronPFHxAUrban DetroitLake ErieInvestigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation
Cerlanek A, Timshina A, Robey N, Lin A, Solo-Gabriele H, Townsend T, Bowden J. Investigating the partitioning behavior of per- and polyfluoroalkyl substances (PFAS) during thermal landfill leachate evaporation. Journal Of Hazardous Materials 2024, 472: 134500. PMID: 38714054, DOI: 10.1016/j.jhazmat.2024.134500.Peer-Reviewed Original ResearchCitationsAltmetricConceptsPolyfluoroalkyl substancesLeachate evaporationVolume of leachatePFAS massFluorotelomer carboxylic acidPartitioning behaviorLeachateUltra-high pressure liquid chromatography tandem mass spectrometryEvaporation experimentsTandem mass spectrometryLiquid chromatography tandem mass spectrometryPlant requirementsDay of sample collectionEvaporator 1Evaporator 2UHPLC-MS/MSOn-siteSample collectionFluorotelomerLandfillSludgeEvaporation systemThermal evaporationPartitioningPERInvestigating the sources and fate of per- and polyfluoroalkyl substances (PFAS) in food waste compost
Timshina A, Robey N, Oldnettle A, Barron S, Mehdi Q, Cerlanek A, Townsend T, Bowden J. Investigating the sources and fate of per- and polyfluoroalkyl substances (PFAS) in food waste compost. Waste Management 2024, 180: 125-134. PMID: 38564913, DOI: 10.1016/j.wasman.2024.03.026.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsFood waste compostFluorotelomer carboxylic acidPolyfluoroalkyl substancesWaste compostPerfluorocarboxylic acidsShort-chain perfluorocarboxylic acidsMunicipal food wasteFood wasteLand applicationCo-disposalComposting facilitiesCompost maturityCompostSource-separationManagement practicesLandfill spaceAerobic decompositionFood supplyWindrowsPhosphate diestersWasteLandFateFoodFeedstock material
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