Li-phthalates tse Chefo ho Li-Sealants: Likotsi tse Patehileng le Push bakeng sa Lisebelisoa tsa Moaho tse Sireletsehileng

Li-sealant li fumaneha hohle malapeng, likolong le libakeng tsa mosebetsi, empa ke ka seoelo li nahanang ka batho ba bangata. Le hoja li kopana le bophelo ba letsatsi le letsatsi, lisebelisoa tsena tse sa tsitsang li ka ba le phello e kotsi ho boleng ba moea ba ka tlung le bophelo bo botle ba batho-.

Kahong ea meaho, li-sealants li na le sepheo sa bohlokoa: ho koala likheo le ho laola phallo ea moea, ts'ebetso e seng e le ea bohlokoa le ho feta har'a mathata a hajoale a boemo ba leholimo. Ka masoabi, ho sa tsotellehe ho sebelisoa ha tsona hohle, li-sealant tse ngata li na le lik'hemik'hale tse kotsi tse kang isocyanate le phthalates. Metsoako ena ea semi-ea fetohang e ka tima{3}}gase ho li-sealant ha nako e ntse e ea, ea silafatsa moea oa ka tlung le ho thella lerōleng la ka tlung.

Li-phthalates li tsejoa ka ho senya ho leka-lekana ha li-hormone 'meleng 'me li amahanngoa le kotsi ea ho ba le bana. Le hoja li-phthalates tse ling li thibetsoe lihlahisoa tsa bana boemong ba federale le linaheng tse kang Washington, California, le Vermont, lihlopha tse tlokotsing{1}}ho kenyeletsoa bana le batho ba bakhachane-li ntse li pepesehetse mehloling e mengata, ho kenyeletsoa lisebelisoa tse tloaelehileng tsa moaho joalo ka li-sealant.

Hajoale, Lefapha la Ecology la Washington le fana ka molao oa ho thibela li-phthalate fatše ka vinyl le monko o monate linthong tsa tlhokomelo ea motho. Liphuputso tsa mahlale li netefalitse hore moea o ka tlung le lerole la ka tlung ke litsela tse kholo tsa ho pepesehela phthalate, e leng se etsang hore melaoana ena e be mohato oa bohlokoa oa ho fokotsa kotsi.

Ka ho tseba ka likotsi tse hlahisoang ke li-phthalates le karolo ea thepa ea kaho ho pepesetseng batho chefo ena, Toxic-Free Future e ile ea sebelisana le Healthy Building Network le Ecology Center ea Michigan ka 2021 le 2022 ho etsa tlhahlobo ea phthalate ho li-sealant. Boiteko bona bo thehiloe mosebetsing o fetileng le Setsi sa Ecology le balekane ba bang ho felisa li-phthalates ho tloha mokatong oa mabenkele le ho ts'ehetsa liteko tse tsoelang pele tsa taolo naheng ea Washington.

Bakeng sa boithuto bona bo bocha, sehlopha se rekile le ho sekaseka lihlahisoa tse 33 tsa sealant{1}ho kenyeletsoa polyurethane, silicone, le acrylic latex mefuta-e sebelisoang hangata ho aha le ho nchafatsa, tseo ho neng ho belaelloa hore li na le phthalates. Basebeletsi Setsing sa Ecology ba sebelisitse Fourier{4}}transform infrared (FTIR) spectrometer ho hlahloba li-phthalates, 'me liteko tse ling tsa laboratori li ile tsa etsoa bakeng sa lihlahisoa tse fumanoeng li le ntle.

Liphetho li senotse hore li-sealant tse 6 ho tse 33 tse lekiloeng li ne li na le phthalates e ngata-ho fihla ho 12% ka boima ba 'mele-ho kenyeletsa le diisonyl phthalate (DINP) le diisodecyl phthalate (DIDP). Haholo-holo, li-phthalates li ne li fumanoa hangata ho "silane modified polymer" sealants: tse hlano ho tse supileng tse joalo li fumanoe li le ntle. Habohlokoa, lihlahisoa tse setseng tse 27 li ne li se na li-phthalates tse bonoang, e leng se bontšang hore mekhoa e meng e sireletsehileng e se e fumaneha.

Baetsi ba li-sealant ba bangata ba se ba emisitse ho sebelisa li-phthalates, 'me ho bohlokoa hore li-sealants tsohle li hlahisoe ntle le lik'hemik'hale tsena tse kotsi. Ho na le mefuta e meng e sireletsehileng ho feta phthalate{1}e nang le li-sealants, joalo ka sodium silicate caulk le pre{2}}compressed polyurethane joint seals.

Setšoantšo se Seholo: Mehaho e Phelang Bophelong bo Botle e Itšetlehile ka Thepa ea Bophelo bo Botle

Lisebelisoa tsa Kaho tse Chefo li Atoloha ka Ntle ho Li-Sealants

Li-sealant ke mohlala o le mong feela oa thepa ea mohaho e nang le metsoako e chefo, e tlatsetsang ho fokotseng moea oa ka tlung le likotsi tsa bophelo bo botle. Ho tloha ho pente le ho bea fatše ho isa ho tse sireletsang, lisebelisoa tse ling tse ngata tsa mohaho hangata li kenyelletsa lik'hemik'hale tse ka senyang bophelo ba batho{1}'me maemong ohle, mekhoa e meng e sireletsehileng ea fumaneha.

Baahi ba Theko ea Bolulo ba Tobana le Ponahalo e sa Lekaneng

Lipatlisiso li bontša hore moroalo oa thepa ea mohaho o chefo ha o arolelanoe ka ho lekana. Baahi ba matlo a theko e tlaase ba pepesehetse ka mokhoa o sa lekanyetsoang, kaha litsi tsena hangata li hahoa ka thepa ea theko e tlaase e ka 'nang ea ba le chefo e ngata{1}e behang bophelo ba baahi kotsing.

Ntle le ho pepeseha haholo malapeng a bona, baahi ba matlo a theko e tlaase le bona ba kotsing ea ho hlaseloa ke lik'hemik'hale tse chefo. Tlalehong e mabapi le matlo a mangata a theko e tlaase haufi le libaka tsa Superfund, Shriver Center on Poverty Law e re: "malapa a limilione tse hlano a lulang matlong a thusoang ke 'muso ke a mangata a nang le batho ba kotsing ea ho pepesehela chefo ea tikoloho." Sena se kenyelletsa palo e kholo ea bana, batho ba nang le bokooa, batho ba baholo, le lichaba tsa Batho ba Batšo le Latine.

Lisebelisoa tsa moaho tse chefo li na le-tšusumetso ea nako e telele, haholo matlong a theko e tlase. Ka mohlala, le hoja pente ea loto e ile ea thibeloa ka 1978, e ntse e tsoela pele ho ntša bana ba lulang matlong a theko e tlaase kajeno kotsi. Bana ba fetang 90,000 ba matlong a Housing Choice Voucher (Karolo ea 8) ba tšoeroe ke chefo ea loto, e bakang tšenyo e sa feleng khōlong ea boko.

Joale ke Nako ea Maano a Laelang Lisebelisoa tsa Kaho tse Sireletsehileng

Ho sireletsa bophelo bo botle le polokeho ea batho, thepa ea kaho e tlameha ho se be le lik'hemik'hale tse chefo. Mekhatlo e kang Enterprise Green Communities le Healthy Building Network, hammoho le mananeo a naha a kang Safer Products for Washington (SPW), esale e le ka pele-pele molemong oa ho fumana thepa e sireletsehileng ea moaho. Enterprise Green Communities e buella lisebelisoa tsa bophelo bo botle meahong ea matlo a theko e tlase, ho tsebahatsa li-phthalates ka har'a li-sealant le chefo e meng ea lihlahisoa tsa moaho e le mathata a bohlokoa a bophelo bo botle. Mokhatlo o thehile litekanyetso tseo lihahi naheng ka bophara li ka kopanang le tsona ho fumana tumello ea ho sebelisa thepa e sireletsehileng matlong a theko e tlase.

Healthy Building Network e boetse e sebetsa ho felisa lik'hemik'hale tse chefo linthong tsa mohaho, ho etsa lipatlisiso tse pharaletseng ka likotsi tsa lik'hemik'hale le mekhoa e meng e sireletsehileng. Tataiso ea eona ea Lehae ea Sehlahisoa sa Lehae e beha thepa ea kaho ka tekanyo ho tloha bofubelu ho isa ho botala ho latela boemo ba kotsi ba litaba tsa eona mme e fana ka maikutlo a likhetho tse sireletsehileng, tse fanang ka sesebelisoa sa bohlokoa ho mang kapa mang ea batlang thepa ea kaho e phetseng hantle.

Naheng ea Washington, Toxic-Free Future e buella lithibelo tse matla holim'a lik'hemik'hale tse chefo, empa Lefapha la Khoebo le hlōlehile ho sireletsa ka mokhoa o lekaneng ho sireletsa baahi ba bolulo ba theko e tlaase ka mofuta oa bona oa maemo a Khoebo. Mananeo a joalo ka Lihlahisoa tse Sireletsehileng bakeng sa Washington le ona a nka khato mabapi le chefo e kang phthalates ka thepa ea moaho. Lilemo tse ling le tse ling tse hlano, Lefapha la Ecology la Washington le laola sehlopha sa lik'hemik'hale tse chefo, ho thibela kapa ho fokotsa boteng ba tsona lihlahisoa tsa bareki. Lenaneo lena le lecha le sireletsa batho le tikoloho ka ho laola likete tsa lik'hemik'hale le lihlahisoa tseo li hlahang ho tsona. Le hoja Lefapha la Ecology qalong le ne le tsepamisitse maikutlo tabeng ea ho thibela li-phthalates fatše ka vinyl, le tlameha ho atolosa lithibelo tsena ho netefatsa hore thepa eohle ea mohaho ha e na lik'hemik'hale tse kotsi. Ka lebaka la boteng ba li-phthalates litekong tsa rona tsa sealant, Lefapha la Ecology le lokela ho thibela li-phthalates ka li-sealant mokhahlelong oa lona o latelang oa melao.

Liketane tsa Ntlafatso ea Lehae li Lokela ho Thibela Phthalates ho Li-Sealants

Teko ea rona e ncha e totobatsa tlhokahalo e potlakileng ea liketane tse kholo tsa ntlafatso ea lehae joalo ka The Home Depot le Lowe's ho thibela li-ortho-phthalates le lik'hemik'hale tse ling tse chefo ka li-sealant. Bahoebi ka bobeli ba se ba bontšitse boetapele ka ho felisa li-phthalates ka vinyl flooring; ba lokela ho hahella tsoelopeleng ena ka ho tlosa li-phthalates ho li-sealant le lihlahisoa tse ling tsa moaho, tse{2}}joaloka fatše{3}li ka silafatsa tikoloho ea ka tlung. Bahoebi bana ba boetse ba lokela ho etsa bonnete ba hore lihlahisoa tse ling li netefalitsoe hore li sireletsehile, li kopana le litekanyetso tse kang GreenScreen Benchmark 2 kapa ChemFORWARD C litekanyetso kapa ho feta.

Motho e mong le e mong o lokeloa ke libaka tse phetseng hantle tseo a ka lulang ho tsona le ho sebetsa. Joale ke nako ea ho aha holim'a maemo a naha joalo ka Enterprise Green Communities ho netefatsa hore matlo a theko e tlase a bolokehile ebile a phetse hantle bakeng sa baahi bohle. Bahoebi ba kang The Home Depot le Lowe's ba se ba bontšitse hore mekhoa e meng e sireletsehileng e teng ka ho felisa phthalates fatše ka vinyl, 'me ba tlameha ho tsoela pele ho thibela chefo lihlahisoa tse ling. Naheng ea Washington, Lefapha la Ecology le lokela ho sebelisa lenaneo la Safer Products bakeng sa Washington ho thibela lik'hemik'hale tse chefo thepa eohle ea moaho.