Maryland Rondedzero Inotsausa Ruzhinji PaPFAS Kusvibiswa MuOysters

NaLeila Marcovici naPat Mukuru, Mbudzi 16, 2020

From Pfuti dzemauto

MunaGunyana 2020, iyo Maryland Dhipatimendi reZvakatipoteredza (MDE) yakaburitsa mushumo wakanzi "St. Mary's River Pilot Kudzidza kwePFAS Kuitika muSurface Mvura uye Oysters. ” (PFAS Pilot Kudzidza) iyo yakaongorora iwo mazinga e-uye-poly fluoroalkyl zvinhu (PFAS) mumvura yegungwa uye maoyster. Kunyanya, iyo PFAS Pilot Study yakagumisa kuti kunyangwe PFAS iripo mumvura ine turu yeRwizi rwaMary, zvimiro zvacho "zviri pazasi pengozi zvine chekuita nekutandara nzira dzekuongorora uye oyster yekushandisa saiti-yakatarwa nzira yekutarisa."

Nepo chirevo ichi chichiita mhedziso yakafara, nzira dzekuongorora uye hwaro hwemaitiro ekuongorora anoshandiswa neMDE hazvina chokwadi, zvichikonzera kutsausa vanhu, uye nekupa inonyengera uye yekunyepa pfungwa yekuchengetedza.

PFAS mhuri yemakemikari ane chepfu uye anoramba aripo anowanikwa mune zvigadzirwa zveindasitiri. Ivo vanoshungurudza nekuda kwezvikonzero zvinoverengeka. Aya anonzi "nekusingaperi makemikari" ane chepfu, haaputsike munzvimbo, uye bio-inounganidza muketani yezvokudya. Imwe yemakemikari anodarika 6,000 PFAS iPFOA, yaimboshandiswa kugadzira DuPont's Teflon, uye PFOS, yaimbova mu3M's Scotchgard uye furo yekudzimisa moto. PFOA yakabviswa muUS, kunyangwe ichiramba yakapararira mumvura yekunwa. Ivo vakasunganidzwa negomarara, kuremara kwekuzvara, chirwere chetachiona, kushomeka kwehutachiona hwehudiki uye mamwe matambudziko ehutano PFAS imwe neimwe inoongororwa muzvikamu zve trillion kwete muzvikamu zvebhiriyoni, semamwe muchetura, izvo zvinogona kuita kuti kuonekwa kwemakomputa aya kuve kunonyengera.
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Mhedziso ye MDE inopfuura-inosvika pane zvinonzwisisika zvakawanikwa zvichibva pane chaiko dhata rakaunganidzwa uye rinowira padanho rinogamuchirwa resainzi nemaindasitiri pamatanho akati wandei.

Oyster Sampling

Imwe ongororo yakaitwa uye yakashumwa muPFAS Pilot Study yakaedzwa uye yakataurwa pamusoro pekuvapo kwePFAS mune oyster tishu. Ongororo iyi yakaitwa neAlfa Analytical Laboratory yeMansfield, Massachusetts.
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Bvunzo dzakaitwa neAlfa Analytical Laboratory dzaive nemuganhu wekuona oysters pa microgram imwe pakirogiramu (1 /g / kg) inoenzana nechikamu chimwe chete pa bhiriyoni, kana zvikamu chiuru patiririyoni. (ppt.) Nekudaro, sezvo yega yega PFAS inoonekwa zvakasiyana, nzira yekuongorora yakashandiswa haina kukwanisa kuona chero imwe PFAS iripo pamari isingasviki zviuru zve1 patirioni. Kuvapo kwePFAS kunowedzera; saka zviyero zvechikamu chimwe nechimwe zvakawedzerwa zvakafanira kuti zvisvike kune yakazara PFAS iripo mumuenzaniso.

Maitiro ekuongorora ekuona makemikari ePFAS ari kufambira mberi nekukurumidza. Sangano reEnvironmental Working Group (EWG) rakatora sampu dzemvura dzemupombi kubva munzvimbo makumi mana neshanu mumatunhu makumi matatu nematatu gore rapfuura ndokurondedzera mhedzisiro mune chegumi patrillion. Semuenzaniso, mvura iri muNew Brunswick, NC yaive ne44 ppt yePFAS.

Vashandi veVanhu Vezvemagariro Ezvakatipoteredza, (PEER) (zvirevo zvakaratidzwa pazasi) vakashandisa nzira dzekuwongorora dzinokwanisa kuona masosi ePFAS munzvimbo dzakadzika kunge 200 - 600 ppt, uye maEurofins akagadzira nzira dzekuongorora dzine muganho wekuona we0.18 ng / g PFAS (180 ppt) mugakanje nehove uye 0.20 ng / g PFAS (200 ppt) muoyster. (Eurofins Lancaster Laboratories Env, LLC, Ongororo Chirevo, cheZVEDZIDZO, Mutengi Project / Saiti: St Mary's 10/29/2020)
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Saizvozvowo, mumwe anofanirwa kushamisika kuti sei MDE yakahaya Alpha Analytical kuti igadzirise kudzidza kwePFAS kana miganho yekucherechedzwa kwenzira dzakashandiswa dzaive dzakanyanya.
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Nekuti miganho yekutsvaga yemiyedzo yakaitwa neAlpha Analytical yakakwira kwazvo, mhedzisiro yePFAS yega yega mumasampuli eoyster aive "Asina-Kuziva" (ND). Angangoita 14 PFAS akaedzwa mune yega sampuli yeoyster tishu, uye mhedzisiro yeumwe neumwe yakanzi ND. Mamwe masampuli akaedzwa makumi matatu nematanhatu PFAS, ese akashuma ND. Nekudaro, ND hazvireve kuti hapana PFAS uye / kana kuti pakanga pasina njodzi pahutano. MDE inozivisa kuti huwandu hwegumi nemana kana makumi matatu neshanu ndi36. Uku kumirira zvisizvo chokwadi. Nekuti kukosheswa kwePFAS kuri kuwedzera sezvavanosangana nehutano hweveruzhinji, zviri pachena kuti kuwedzerwa kwe14 kusungirirwa pazasi peganho rekuona kunogona kuenzana nemari pamusoro peyero yakachengeteka. Saizvozvo, gumbeze chirevo chekuti hapana njodzi kuhutano hweveruzhinji zvichibva pakutsvaga kwe "isiri-kuona" apo kuvepo kwePFAS mumvura kusingazivikanwe, hakuna kukwana kana kuita.

MunaGunyana, 2020 Eurofins - yakatumirwa neSt. Mary's River Watershed Association uye nemari inotsigirwa ne KUYEDZA-KUZIVISWA oysters anobva kuSt. Mary's River uye St. Inigoes Creek. Oyster muRwizi rwaSt. Mary, yakanyanya kutorwa kubva kuChurch Point, uye muSt. Inigoes Creek, yakatorwa zvakananga kubva kuKelley, yakawanikwa iine zvikamu zvinopfuura chiuru patirioni (ppt). Perfluorobutanoic acid (PFBA) uye Perfluoropentanoic acid (PFPeA) yakawanikwa muKelley oysters, nepo 1,000: 6 Fluorotelomer sulfonic acid (2: 6 FTSA) yakawanikwa muCosta oyster oyster. Nekuda kwematanho epasi ePFAS, huwandu chaihwo hwePFAS yega yega hwainetsa kuverenga asi huwandu hwese hwaiverengwa seinotevera:

Sezvineiwo, MDE haina kuramba ichiedza oyster sampuli yeiyo imwechete seti yePFAS. MDE yakaedza oyster tishu uye doro kubva gumi sampuli. Matafura 10 ne7 ePFAS Pilot Study anoratidza kuti matanhatu ema sampuli aive kwete kuongororwa kwePFBA, PRPeA, kana 6: 2 FTSA (imwecheteyo se1H, 1H, 2H, 2H- Perfluorooctanesulfonic Acid (6: 2FTS)), nepo ina dzesampuli dzakaedzwa izvi zvitatu zvinodzosera zviwanikwa zve "Non Detect . ” Iyo PFAS Pilot Study haina chero tsananguro yekuti nei mamwe maoyster sampuli akaedzwa aya ePFAS nepo mamwe ma sampuli anga asiri. Iyo MDE inoshuma kuti PFAS yakawanikwa pakadzika pakadzika munzvimbo yese yekufunda uye kuwanda kwakataurwa pairi kana padyo nematanho ekuona nzira. Zviripachena, miganho yekutsvaga yenzira dzakashandiswa neAlpha Analytical kudzidza yaive yakanyanya kufunga kuti Perfluoropentanoic acid (PFPeA) yakawanikwa pakati pemazana maviri nemazana matanhatu ezviuru pamatirioni mune maoyster muchidzidzo che PEER, nepo isina kuwanikwa muAlfa Analytical kudzidza .

Kuongorora Kwemvura Pamusoro

Iyo PFAS Pilot Study zvakare yakashuma pamusoro pemhedzisiro yekuyedza nzvimbo yemvura yePFAS. Pamusoro pezvo, mugari anonetsekana uye munyori wenyaya ino, Pat Elder anobva kuSt. Inigoes Creek, akashanda neUniversity yeMichigan's Biological Station kuitisa kuyedzwa kwemvura mumvura imwechete muna Kukadzi, 2020. Chati inotevera inoratidza matanho e14 PFAS analytes mumasampuli emvura sezvakataurwa neMU uye neMDC.

Muromo weSt. Inigoes Creek Kennedy Bar - North Shore

ND - Hapana Kuonekwa
<2 - Pazasi pekuona muganho

Iko kuongorora kweU UM kwakawana huwandu hwe1,894.3 ppt mumvura, nepo iwo maseru eMDE akazara 4.33 ppt, asi sezvakaratidzwa pamusoro pehuwandu hwenzvimbo dzakawanikwa neMDE kuva ND. Zvinonyanya kushamisa, mhedzisiro yeU UM yakaratidza 1,544.4 ppt yePFOS nepo bvunzo dzeMDC dzakazivisa "Hapana Kuonekwa." Makumi gumi ePFAS makemikari akawanikwa neU UM akadzoka se "Hapana Kuonekwa" kana asina kuongororwa neMDC. Kufananidza uku kunonongedza munhu kumubvunzo uri pachena wekuti "sei;" nei imwe rabhoritari isingakwanise kuona iyo PFAS iri mumvura nepo imwe ichikwanisa kudaro? Uyu unongova mumwe wemibvunzo yakawanda yakamutswa nemhedzisiro yeMDC.PFAS Pilot Study inoti yakagadzira "njodzi-yakavakirwa pamusoro pemvura uye oyster tishu kuongorora maitiro" emhando mbiri dzePFAS - Perfluorooctanoic Acid (PFOA) uye Perfluorooctane Sulfonate (PFOS ). Mhedziso dzeMDC dzakavakirwa pamusanganiswa wemakomputa maviri chete - PFOA + PFOS.

Zvakare, chirevo hachina chero tsananguro yekuti sei makomputa maviri aya akasarudzwa mumatanho ayo ekuongorora, uye nezve zvinoreva izwi "njodzi-yakavakirwa pamusoro pemvura uye oyster tishu yekuongorora maitiro. "

Nekudaro, veruzhinji vakasara vaine mumwe mubvunzo unokatyamadza: nei MDE ichidzikisira kupedzisa kwayo kumakomponi maviri aya kana akawanda akawanikwa, uye akawanda akawanda achikwanisa kuwanikwa kana uchishandisa nzira ine yakaderera yekuona yekupedzisira?

Kune zvipenga munzira iyo inoshandiswa neMDC mukupa kwayo mhedziso, uyezve kusaenderana uye nekushaikwa kwekutsanangurwa kuti nei makomputa akasiyana ePFAS akaedzwa pakati pemasampula uye mukati mekuyedza kwese. Chirevo hachitsanangure kuti sei mamwe masampuro asina kuongororwa mamwe kana mashoma makomputa pane mamwe masampuli.

MDE inopedzisa, "pamusoro pemvura nhandaro yekufungidzira njodzi yekufungidzira yaive pazasi pazasi MDE saiti-yakatarwa pamusoro pemvura yekuvaraidza yekushandisa yekuongorora maitiro, ”Asi haipi tsananguro yakajeka yezvinodiwa pakuongorora izvi. Izvi hazvina kutsanangurwa uye nekudaro hazvigone kuongororwa. Kana iri nzira yakakwana yesainzi-yakavakirwa, iyo nzira inofanira kuunzwa uye kutsanangurwa ichidonongodza hwaro hwesaenzi. Pasina kuyedzwa kwakaringana, kusanganisira nzira yakatsanangurwa uye yakatsanangurwa, uye kushandisa bvunzo dzinokwanisa kuongorora kudzikira pamatanho akaderera anodiwa pakuongorora kwakadaro. dzinonzi mhedziso dzinopa hutungamiriri hushoma hunogona kuvimbwa neruzhinji.

Leila Kaplus Marcovici, Esq. ari kuita patent gweta uye vanozvipira neSierra Club, New Jersey Chitsauko. Pat Mukuru muratidziri wezvakatipoteredza muSt Mary's Guta, MD uye vanozvipira neSierra Club yeNational Toxics Team