微塑料对人类和生物体健康的影响.pdf

1、AN UNEXPECTED SNACK:MICRO AND NANOPLASTIC OCCURRENCE AND MECHANISMS OF TOXICITYSUSANNE BRANDER,PHDASSOCIATE PROFESSOROREGON STATE UNIVERSITYPhoto credit:Anna BolmAcknowledgmentsBluesky:pnwmicroplastics,smbranderInstagram:pnwmicroplasticsLinkedIn:Pacific Northwest Consortium,Dr.Susanne BranderAcknowl

2、edging many colleagues who are currently furloughedAcknowledging many colleagues who are currently furloughedElise GranekStacey HarperWayne LandisChris LangdonTEXTILESANDTIRESARETHEMOSTOFTENDETECTEDGranek et al.2022,Mayer et al.20241.occurrence2.response3.mitigation connecting approaches to inform s

3、ystemicsolutionsOUTLINE1.occurrence2.responseOUTLINE3.mitigation connecting approaches to inform systemicsolutionsSpectroscopy(to 20 m)VERIFY Jasco Inc.measure&photograph each plasticINSPECT 1 mmDIGEST KOH and/or density separationISOLATE/DISSECTZooplanktonSpraint/ScatTissuesBiosolidsSedimentWaterBr

4、ander et al.2020,Cowger et al.2020,Lasdin et al.2023,Boisen et al.2024Under a laminar flow hood with HEPA filtrationINSPECT Photo:Alexa Nino de RiveraSAIP cruise transects(modified from Suntsov and Brodeur,(2018)Boisen et al.2024a,bMYCTOPHIDSApproximately 34%of fish across three species contained pa

5、rticles(20 fish per station,340 total)in G.I.tracts.The majority were fibers.Important prey for larger fishes and squid.p=0.077TROPHIC TRANSFER,FOOD WEB IMPACTSHildebrand et al.2021;Torres,Brander et al.2023Image of H.sculpta following fiber exposure in lab Lauren KashiwabaraCOMMERCIAL FISHERY SPECI

6、ESTraylor et al.in 2024,Lasdin et al.2023Brander et al.2024Microplastics and fibers were all detected in fillets(edible muscle tissue).1.occurrence2.responseOUTLINE3.mitigation connecting approaches to inform systemicsolutionsDIFFERENCES IN RESPONSE BETWEEN PARTICLE TYPES Following a 4-day microplas