X e khubelu e bonts'a Sebaka sa Koetliso ea Mollo Setsing sa Laboraro sa Naval Research - Chesapeake Bay Detachment. Blue X ke sebaka sa oyster e lekiloeng ke Toropo ea Chesapeake Beach.
Ka Pat Elder, Mil MilPoisons.org, August 12, 2021
Toropo ea Chesapeake e phatlalalitse sephetho sa liteko tse tšosang ka Phato 10, 2021 bakeng sa PFAS ho li-oyster, litlhapi le sludge ea likhoerekhoere. 1,060 ppt ea PFAS e tlase e lebelletsoeng ea li-oyster e ne e tšosa hobane li-bivalve tse lekiloeng li ne li tsoa sebakeng se bohole ba 23 miles, ho se seng sa libaka tse hloekileng tikolohong ea Chesapeake Bay. Ho sa le joalo, perch e ile ea ts'oasa maoto a 1,000 ho tloha lebopong la Naval Research Laboratory - Chesapeake Bay Detachment (NRL-CBD) e fumanoe e na le 9,470 ppt ea chefo, ha rockfish e ne e na le li-2,450 ppt. Linaha tse ngata li lekanyetsa PFAS metsing a nooang ho 20 ppt, leha Maryland e sa laole lintho tseo.
Sesebelisoa se senyenyane sa pan-fried se tsoang Chesapeake Bay se ka ba boima ba li-ounces tse 4 kapa tse 113. Haeba filet ea litlhapi e na le likarolo tse 9,470 ka li-trillion tsa PFAS, ke likarolo tse 9.47 ka bilione, e ts'oanang le li-nanograms tsa 9.47 ka grama. (ng / g)
Kahoo, 9.47 ng / gx 113 g = 1,070 ng. Sebopeho sa 4-ounce se na le li-nanograms tsa 1,070 tsa PFAS. Re tla re li-ounces tse 4 tsa tlhapi ena e monate e fuoa ngoana ea lilemo li hlano ea boima ba liponto tse 50.
European Food Safety Authority (EFSA) e thehile Tolerable Weekly Intake (TWI) bakeng sa ngoana ea boima ba liponto tsa 50 (22.6 kilos) ho li-nanograms tse 100 ka beke tsa lik'hemik'hale tse nne tsa PFAS, ho kenyeletsoa le PFOS.
Li-ounise tse 'ne tsa perch e nang le 1,070 ng ea PFAS e kholo ho feta makhetlo a 10 ho feta European beke le beke moeli bakeng sa ngoana oa rona. Khoho ke chefo. E ke ke ea bolaea ngoana, empa e kanna ea mo kulisa qetellong.
Mekhatlo ea Bophelo le Tikoloho ea Maryland ha e amehe ke batho ba Maryland ba jang chefo ena e tsoang karolong e nyane ea litlhapi. Basali ba imeng kapa ba ka emang ha baa lokela ho ja setlolo se tšoaroang haufi le Naval Research Laborator - Chesapeake Bay Detachment. Hoa hlaka kapele hore ha baa lokela ho ja litlhapi kae kapa kae koung - ebile ha ho joalo le ka motho e mong.
Liphetho tsa liteko tse fanoeng ke Toropo ea Chesapeake Beach le tsona li bonts'a metsi a "se hloekisitsoeng" a likhoerekhoere a tsoang khafetsa koung ho tloha toropong a fumanoe a na le 506.9 ppt ea "lik'hemik'hale tsa ka ho sa feleng". Perfluoropentanoic Acid (PFPeA), lesole le sebetsang indastering le bakileng tšilafalo e ngata. Chesapeake Beach le eona e fumana tšusumetso ho tsoa Toropong ea North Beach, le karolo e nyane ea setereke sa boroa sa Anne Arundel. Mefuta eohle ea PFAS e nahanoa e le kotsi, ha tsela ea mantlha ea ho kenella ha motho ke ka ho ja lijo tsa leoatleng tse tsoang metsing a silafetseng.
Toropo ea Chesapeake Beach e phatlalalitse polelo ena:
“Phato 10, 2021 (Chesapeake Beach, MD) - Toropo ea Chesapeake Beach e ntse e tsoela pele ho hokahana le Lefapha la Tikoloho la Maryland le Sesole sa United States mabapi le boiteko ba ho fokotsa Setsi sa Patlisiso ea Sesole sa Metsing - Chesapeake Bay Detachment.
Ka Mots'eanong oa 2021, Toropo e phatlalalitse hore metsi a nooang a Toropo ha a na mesaletsa ea lintho tsa per-and polyfluoroalkyl (PFAS). Liteko li ile tsa etsoa lilibeng tsohle tsa ho noa tsa Toropo, tse tsoang ho Aquia Aquifer.
Ntle le ho leka metsi a nooang a Toropo, Toropo e nkile mehato e meng ho leka metsi a ho sesa a Toropo, bophelo ba metsing a lehae le metsi a Chesapeake Beach Water Reclamation (WRTP) bakeng sa metsi a per-and polyfluoroalkyl (PFAS). ”
Le ha toropo e re e lekile "bophelo ba metsing ba lehae", tlaleho ea oyster e hlophisitsoeng ke Eurofins Environment Testing America, ea la 8/4/21, e kenyelelitse likhokahanyo tsa GPS tsa 3842.084. 7630.601 e lebisang sebakeng sa kou e fumanehang li-mile tsa 23 SSE ho tloha Chesapeake Beach, 1 mile ho tloha St. John Creek lebopong la Bochabela la Maryland, haufi le Taylor's Island Wildlife Management Area. Sebaka sena se ka ba 5.5 ka bochabela ho Cove Point Light House mme e nkuoa e le se seng sa libaka tse hloekileng ka ho fetesisa sebakeng sa Chesapeake. Bona file ea Tlaleho ea Oyster ea Eurofins e lokollotsoeng ke toropo.
Rockfish le Perch li ile tsa bokelloa ho 3865.722, 7652.5429, e bohōle ba limithara tse ka bang 1,000 ho tloha NRL-CBD. Bona file ea Tlaleho ea Litlhapi tsa Eurofins e lokollotsoeng ke toropo.
Ka mokhoa o makatsang, oyster le litlaleho tsa litlhapi tse lokiselitsoeng ke Eurofins li entsoe molemong oa moreki:
THAKA
8200 Bayside Rd.
Chesapeake, Maryland 20732
Attn: Holly Wahl
Lithaka li khuts'oane bakeng sa Basebetsi ba Sechaba bakeng sa Boikarabello ba Tikoloho, mokhatlo o etelletseng pele oa tikoloho o fumanehang Silver Spring, Maryland o sirelletsang baloli le ho khantša leseli liketsong tse seng molaong tsa mmuso. Tim Whitehouse, Motsamaisi e Moholo oa PEER o re lefapha la hae "le ne le sa ameha" ho faneng ka tlaleho.
Toropo ea Chesapeake Beach e re "e ntse e tsoela pele ho hokahana le Lefapha la Tikoloho la Maryland le Sesole sa Metsing sa United States mabapi le boiteko ba ho fokotsa Setsi sa Patlisiso ea Sesole sa Metsing - Chesapeake Bay Detachment" mme sena se hlakile haholo.
Ka bomalimabe, ha ho na motho ea fokotsang lik'hemik'hale tikolohong. Sebakeng seo, ba leka ho fokotsa matšoenyeho a sechaba mabapi le ts'ilafalo ea Sesole sa Metsing sa Chesapeake Bay. Ho fokotsa DOD ke mohopolo o laetsoeng. Laesense ea chefo e fumanoa ka mashano a qobellang, a tšoarellang le a sebetsang.
Ha maemo a phahameng a PFAS a tlalehiloe metsing a St. Inigoes Creek haufi le Webster Field Annex ea Patuxent River Naval Air Station ka Hlakola, 2020, Ira May, ea e okametse muso ho hloekisoa ha saete bakeng sa Lefapha la Tikoloho la Maryland, le khothalelitse hore tšilafalo molatsoaneng, "haeba e teng", e ka ba le mohloli o mong. O boletse hore lik'hemik'hale hangata li fumanoa litšila tse laetsoeng, joalo ka li-biosolids le libakeng tseo mafapha a mollo oa sechaba a fafatsang foam.
Phallo e haufi haholo ea tšebeliso e sa khaotseng ea foam e koetsoeng ka mollo ea PFAS botlaaseng e bohole ba 11 miles ha ntlo ea mollo ea oteropo e le 5 miles hole.
"Kahoo, ho na le mehloli e mengata e ka bang teng," ho boletse May. Re sa tsoa qala ho sheba kaofela ha tsona. ” Mme ba ntse ba le tshimolohong.
Ofisiri e phahameng ea tikoloho ea Maryland e koahela DOD. Navy kamora moo e ile ea tlaleha 84,756 ppt ea PFAS ka metsing a ka tlase ho Webster Field, e lebile molatsoaneng.
Ho na le bopaki bo bong ba pherekano ea Maryland mabapi le PFAS bophelong ba metsing ba Chesapeake. Ka Loetse 2020, Lefapha la Tikoloho la Maryland (MDE) le ile la ntša tlaleho e nang le sehlooho se reng “St. Mary's River Pilot Study ea Ketsahalo ea PFAS ho Metsi le Li-Oyster. ” (PFAS Pilot Study) e ileng ea sekaseka maemo a per-and poly fluoroalkyl substance (PFAS) metsing a leoatle le li-oyster. Haholo-holo, PFAS Pilot Study e fihletse qeto ea hore leha PFAS e le teng metsing a noka ea St. Mary's, lipehelo "li tlase haholo tlasa mekhoa ea ho lekola tšebeliso ea boithabiso le litekanyetso tsa tlhahlobo ea" oyster ".
Le ha tlaleho e etsa liqeto tsena tse pharalletseng, mekhoa ea ho sekaseka le metheo ea litekanyetso tsa ho lekola tse sebelisoang ke MDE lia belaetsa, tse bakang ho khelosa sechaba, le ho fana ka maikutlo a thetsang le a fosahetseng a polokeho.
Qeto ea MDE e fihlella liphetho tse utloahalang e ipapisitse le tlhaiso-leseling ea 'nete e bokelletsoeng mme e haelloa ke litekanyetso tse amohelehang tsa mahlale le indasteri maemong a' maloa. Phuputso ea Pilot Pilot e ile ea leka le ho tlaleha ka boteng ba PFAS lisele tsa oyster. Tlhatlhobo e entsoe ke Alpha Analytical Laboratory ea Mansfield, Massachusetts.
Liteko tse entsoeng ke Laboratori ea Alpha Analytical li ne li na le moeli oa ho lemoha li-oyster ka microgram e le ngoe ka kilogram (1 /g / kg) e lekanang le karolo e le ngoe ho bilione, kapa likarolo tse 1 1,000 trillion. (ppt.) Ka lebaka leo, ha komporo e 'ngoe le e' ngoe ea PFAS e fumanoa ka bonngoe, mokhoa oa ho sekaseka o sebelisitsoeng o ne o sa khone ho fumana e le 'ngoe ea PFAS ka chelete e ka tlase ho likarolo tsa 1,000 trillion. Boteng ba PFAS boa eketsa; ka hona, likhakanyo tsa kompone ka 'ngoe li kenyelletsoa ho fihlela kakaretso ea PFAS e teng sampoleng. Ho tsepamisoa ho ka feta likarolo tse likete tse 'maloa ho litrillion tsa chefo ea oyster ha mmuso o tlaleha "No Detect".
MDE e koahela Sesole sa Metsing ha Toropo ea Chesapeake Beach e sena thapelo leha e nkile qeto ea ho ba sebapali se tšepahalang.
Ka tlase ke liphuputso tse tsoang ho lithuto tsa oyster le tlhapi, tse lateloang ke tlhahlobo ea PFAS ke Pace Analytical ea metsi a litšila a tsoang Chesapeake Beach Water Reclamation Treatment Plant, (WRTP). Metsi a metsi a phallang a tšeloa ka koung ka mor'a hore a hloekisoe. Lik'hemik'hale tsa PFAS ha li tlosoe ho tsoa mantle a ts'ebetso ea kalafo.
oyster
PFOA - Perfluorooctanoic acid 180 ppt JB *
PFOS - Perfluorooctanesulfonic acid e 470 ppt J
PFOSA - Perfluorooctanesulfonamide 410 ppt J
Kakaretso ea 1,060
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Perch
PFOS - Perfluorooctane sulfonic acid 7,400 ppt
PFOA - Perfluorooctanoic acid) 210 ppt JB
PFNA Perfluorononanoic acid) 770 ppt
PFDA Perfluorodecanoic acid) 370 ppt JB
PFHxS Perfluorohexane sulfonate) 210 ppt J
PFUnDA Perfluoroundecanoic acid) 510 ppt J
Kakaretso ea 9,470 ppt
==========
Rockfish (metsero Bass)
PFOS - Perfluorooctanesulfonic acid 1,200 ppt
PFHxA - Perfluorohexanoic acid e 220 ppt JB
PFOA - Perfluorooctanoic acid 260 ppt JB
PFDA - Perfluorodecanoic acid e 280 ppt JB
PFOSA - Perfluorooctanesulfonamide 200 ppt J
PFUnDA - Perfluoroundecanoic acid e 290 ppt J
Kakaretso ea 2,450 ppt
===============
J - ho tsepamisa mohopolo ke boleng bo lekanyelitsoeng; B - komporo e fumanoe e se na letho le sampole.
Setsi sa Phekolo ea Phekolo ea Metsi a Chesapeake Beach
Liphetho tse ntle tsa PFAS
Metsi a Bokelletsoe 06/10/2021
Sekhahla sa Analytical
Lebōpo la Chesapeake, MD
Kakaretso ea Sample Analysis PFAS ke Isotope Dilution Client
PFAS Tšoenyeho
PFPeA - Perfluoropentanoic acid e 350 ppt
PFBA - Tlhahiso-leseling 13
PFBS - Perfluorobutanesulfonic acid e 11
PFHxA - Perfluorohexanoic acid e 110
PFHpA - Perfluoroheptanoic acid 6.4
PFHxS - Perfluorohexane sulfonate 2.3
PFOA - Perfluorooctanoic acid 11
PFOS - Perfluorooctanesulfonic 3.2
Kakaretso ea 506.9 ppt
==============
Ka Mots'eanong 2021, Sesole sa Metsing se phatlalalitse hore sebaka sa NRL-CBD se na le maemo a PFAS mobung o ka tlase o fetang likarolo tse limilione tse 8 ho trillion, mohlomong e le maemo a holimo ho fetisisa lefatšeng. Bophahamo ba tšilafalo bo ka tiisa ts'ilafalo e tsoelang pele ea sebaka seo ka lilemo tse likete. Ho ile ha fumanoa molatsoana o tlohang botlaaseng o na le 5,464 ppt ea chefo ha metsi a ka tlase ho lefatše a fumanoa ka bongata ba 171,000 ppt. Tšilafalo ea mobu, metsi a holim'a metsi le metsi a fatše li ne li batla li tsoa ho PFOS, mohlomong ke mefuta e bolaeang ka ho fetisisa ea PFAS. Lefapha la Tikoloho la Wisconsin le re bophelo bo botle ba batho bo kotsing ha metsi a holim'a metsi a feta 2 ppt ea PFOS, ka lebaka la phello e akaretsang ea PFOS litlhaping. Linaha tse ngata li lekanyetsa maemo a metsi a ka tlase ho 20 ppt, leha e se Maryland.
