PH nruab nrab. Yuav ua li cas mus xaiv cov txhais tau tias raws li lub acid-puag tshuav nyiaj li cas?

Yeej muaj ntau zaus tsis tau hnov ntawm xws li ib tug lub tswv yim raws li pH (nruab nrab, acidic los yog alkaline). Nws yog ib qho kev ntsuas ntawm hydrogen thiab nrhiav tau ob qho tib si nyob rau hauv lub raj nrog ib tug cream, thiab cov txais tos nyob rau dermatologist. Qhia txog ntawm tus pH ntawm daim tawv nqaij yog heev tseem ceeb heev. Yuav ua li cas yog no daim duab? Sim kom to taub.

Ib me ntsis txog cov qauv ntawm daim tawv nqaij

Raws li yog lub npe hu, lub horny txheej twb nyob rau hauv daim tawv nqaij epidermis, nws ua ib tug ruaj ntseg nuj nqi. Nws yog cov dej-lipid matrix uas muaj roj compound thiab cov acid mantle Markionini. Muaj coob tus ntseeg hais tias nws PH nruab nrab - txog 7, tab sis qhov no yog yuam kev lawm. Ntaub thaiv nrog lub pH nqi yuav qhuav thiab strapped. Cov tawv nqaij yog muaj li ntawm lactic thiab citric organic acids, thiab chaw pib, tsis tau nws tshuav nyiaj li cas tsis mus dhau qaub. Yog hais tias lub dermis muaj tej yam kev ua txhaum los yog hloov lub pH ntawm lub epidermis pib hloov dramatically. Qhov no yuav ua tau ib tug rau txim ntawm lub mob loj, thiab lub txiaj ntsim ntawm kev tu tawv nqaij.

Lub pH scale

Tus thawj tshaj plaws yuav tsum nco ntsoov yog hais tias lub notion ntawm «pH nruab nrab" siv hais rau cov ib puag ncig nyob rau hauv nqe lus nug. Hais txog daim tawv nqaij tus nqi yog 5,2-5,7, kua muag - 7.4, thiab nyob rau hauv cov tshuaj daws teeb meem nruab nrab pH nqi - 7 units (e.g., dej).

Peb paub los ntawm cov tshuaj cov chav kawm ntawv uas lub scale ntawm acid-puag tshuav nyiaj li cas mas nws txawv ntawm 0 mus 14. Nruabnrab pH - txog li ib nrab ntawm nws, dab tsi hauv qab no - yog acidic, saum toj no - alkaline. Raws li rau lub tswv yim nyob rau hauv cosmetology, lub «pH-nruab nrab" txhais tau tias li ib tug acid-puag ntsuas no yog qhov zoo tshaj plaws rau tag nrho cov tawv nqaij hom.

Nyob rau hauv tas li ntawd, oily daim tawv nqaij raws li nws yog tshwm sim los ntawm qhov ntsuas no. Qhuav daim tawv nqaij muaj ib tug pH tus nqi ntawm 5.7 rau 7 txwm - los ntawm 5.2 mus 5.7, oily - los ntawm 4 mus rau 5.2.

Ntawm daim tawv nqaij cov teeb meem: ib tug vicious vajvoog

Peb twb hais txog nrog lub fact tias ib tug pH ntawm, tab sis tam sim no wb tham txog qhov teeb meem txuam nrog rau qhov ntsuas no. Oily cov tawv nqaij - ib qho teeb meem rau ntau tus neeg. Tshwj xeeb tshaj yog nyob rau hauv thaum tiav hluas. Yuav luag txhua txhua tus me nyuam yuav inevitably tshwm sim ntxau thiab pob txuv. Ntawm cov hoob kawm, qhov no yog ib lub txim ntawm lub ntus tsis ua hauj lwm ntawm hormonal tom qab. Txawm li cas los, nyob rau ntawm lub sij hawm no nws yog ib qho tseem ceeb heev qhov tseeb ntawm daim tawv nqaij.

Yuav ua li cas qhia cov niam txiv nyob rau hauv xws li ib tug cov ntaub ntawv? Feem ntau ntxuav? Cov tub hluas ua li ntawd, tab sis pob txuv yog tsuas tau loj. Yuav ua li cas yog vim li cas? Xab npum - txhais tau tias muaj ib tug alkaline ras txog, thiab nws cov pH mas nws txawv ntawm 6 mus rau 11 units. Nws nquag siv ua rau lub fact tias nws kom deb rau sab saum toj txheej ntawm lub ntsej muag nrog lub acidic nruab nrab. Cov kev tiv thaiv kev ua ntawm lub stratum corneum yog ua hauj lwm thiaj li hais tias lub me ntawm daim tawv nqaij ntawm mineral acid cov kab mob tam sim no nyob rau hauv lub qub muaj ntawm tus neeg, qhov ntau nws ua subcutaneous rog. Yog tias ib tug vicious vajvoog: qhov ntau peb ntxuav peb tus kheej, qhov ntau zhirneet daim tawv nqaij. Ib tug tej yam ntuj tso lo lus nug tshwm sim: "Yuav ua li cas yuav ua tau peb li cas?"

Yuav ua li cas kom muaj lub pH ntawm lub cai?

Nyob rau hauv thiaj li yuav cawm tau lub ntsej muag thaum ntxuav nws tej acid-alkaline tshuav nyiaj li cas, koj yuav tsum tau them rau kev mloog kom hniav zoo nkauj khoom, uas yog siv nyob rau hauv tus txheej txheem. Thawj kauj ruam yog mus nrhiav seb yog dab tsi xab npum nrog ib tug nruab nrab pH yuav siv tau rau heev ntxuav. Yog hais tias qhov no yog tseeb ib tug tsim nyog ntsuas, lub hydrogen puag yuav tsum tau yuav acidic (5.5 units). Cov no muaj xws tshwj xeeb foams, tshuaj kua, lub cev scrubs, daim tawv nqaij caum rau oily (pH = 4).

Yog hais tias tsis muaj teeb meem raws li xws li, nws yuav siv tau rau kev saib xyuas cov neeg ua hauj nrog tsis muaj zog acid, 5.5 units rau qhuav ntawm daim tawv - los ze zog rau nruab nrab - 6.5. Nyob rau hauv txhua rooj plaub nws yog tsim nyog los nco ntsoov tias nyob rau hauv thiaj li yuav xaiv tus zoo tshuaj rau kev tu tawv nqaij, koj yuav tsum kwv yees li tib tug acid-alkaline tshuav nyiaj li cas. Tib yam siv rau lub nyiaj seem rau ntawm daim tawv nqaij. Gel nrog ib tug nruab nrab pH ntawm, raws li ib tug txoj cai, haum rau qhuav ntawm daim tawv, thiab rau cov teeb meem no yog los xaiv cov nyiaj nrog ib tug me ntsis acidic ib puag ncig.

Tsuaj zawv plaub hau thiab pH theem

Raws li cov kev yeeb tshuaj, tsuaj zawv plaub hau kuj muaj ib tug pH ntawm, muaj ib hom tshuaj, nws txawv. Ntawm no, raws li cov kev cai ntawm Science News for KIDS, kuj raws nraim tib yam cai: qis tshaj rau 7 units - yog acidic, saum toj no - alkaline. Tshuaj zawv plaub hau nrog rau cov pH - raws nraim 7 units. Kuj saum tawv taub hau yuav luag txhua yam tseem unchanged. Feem ntau nws muaj ib tug weakly acidic nruab nrab - 4.5-5.5. Qhov no txhais tau tias cov kev xaiv ntawm tsuaj zawv plaub hau yuav tsum nkaus nyob ntawm seb yuav ua li cas lub taub hau yog nquag muaj roj.

Rau qhuav hom pom zoo kom siv ntau alkaline tsuaj zawv plaub hau rau greasy thiab - me ntsis acidic. Yog hais tias lub taub hau nepriveredlivyh, xws li cov me nyuam, nws yog tsim nyog los xaiv zawv plaub hau nruab nrab pH (7 units). Tu siab, tsuas yog ib tug me me muaj pes tsawg tus ntawm manufacturers qhia seb ib tug acid-puag taw qhia yog tam sim no nyob rau hauv lawv cov skincare cov khoom. Lawv tsuas los ntawm cov inscriptions (qhuav, oily, tej tawv nqaij). Qhov no yog tsis nkaus muaj tseeb, vim hais tias, raws li kev tshawb fawb, nws zoo nkaus li ntawd, raws li ib tug txoj cai, zawv plaub hau rau tej tawv nqaij alkaline, thiab yuav tsum tau me ntsis acidic.

Puas yuav ua tau los mus txiav txim lub pH theem ntawm daim tawv nqaij thiab cov txhais tau tias?

Muaj ntau yuav nyiam mus kawm dej thiab acid tshuav nyiaj li cas nyob rau hauv ib tug teeb meem. Tom tsev, ua lub xeem no yog tsis yooj yim. Qhov no yuav tsum tau ib tug tov thiab ib tug acid-puag taw qhia, raws li ib tug txoj cai, litmus sawb. Lawv dipped rau hauv cov tshuaj thiab muab tso rau ib tug dawb daim ntawv. Yuav luag instantly, cov zaub no yog muaj nyob rau hauv cov xim. Nyob rau hauv lub npaj xim teev, nws yog ua tau los mus txiav txim lub acidic puag ncig los yog alkaline. Piv txwv li, yog hais tias tus litmus dipped nyob rau hauv lye, ces nws yuav muab lub xiav xim nyob rau hauv ib tug acidic ib puag ncig - liab.

Lwm txoj kev mus nrhiav seb yog dab tsi lub pH, - nws yog pH-meter. Qhov no yog ib tug heev siab thov ntaus nrog ib tug high school cov raug kev txiav txim. Nws yog siv nyob rau hauv factories qhov twg ib puag ncig tswj yuav tsum (roj ntau lawm, cov tshuaj lom thiab xim kev lag luam, thiab lwm tus neeg.). Xws li ib tug ntaus ntawv no kuj muaj nyob rau hauv lub txais tos ntawm cov dermatologist. Nyob rau hauv no tsab xov xwm, peb kawm tau hais tias lub pH ntawm no, thiab muaj figured tawm li cas los xaiv txoj cai tshuaj pleev ib ce rau kev tu tawv nqaij raws li lawv acid-alkaline tshuav nyiaj li cas.