Vim li cas hydrogen peroxide npuas ntawm lub qhov txhab: lom zem chemistry

2024 Tus sau: Curtis Blomfield | [email protected]. Kawg hloov kho: 2024-01-02 05:49

Hydrogen peroxide (H₂O_{2) yog ib yam khoom uas muaj dawb hauv lub tsev muag tshuaj. Cov peroxide uas peb yuav yog 3% kev daws: uas yog, lub raj mis nrog cov khoom yog 97% dej. Hydrogen peroxide hauv cov tshuaj no tsuas yog 3%.}

Ntau tus neeg siv cov tshuaj no ua tshuaj tua kab mob. Txawm hais tias ob peb tus neeg paub tias peroxide tsis zoo txaus ua cov tshuaj tua kab mob. Txawm li cas los xij, nws tsis muaj kev phom sij thaum nws tau txais kev txiav thiab khawb, ntxiv rau, thaum nyob rau hauv kev sib cuag nrog lub qhov txhab, peroxide tsim ib qho zoo kawg nkaus "show". Yog li vim li cas hydrogen peroxide ua npuas ncauj rau ntawm qhov txhab? Dab tsi yog qhov kev piav qhia txog science rau qhov tshwm sim zoo nkauj no? Tshawb nrhiav hauv kab lus.

Vim li cas hydrogen peroxide ua npuas ncauj ntawm qhov txhab?

Qhov laj thawj frothing tshwm sim yog vim cov qe ntshav thiab cov ntshav nws tus kheej muaj cov enzyme hu ua catalase. Txij li thaum txiav los yog khawb ib txwm nrog los ntshav thiab cov hlwb puas, muaj ib txwm muaj ntau catalase nyob ib ncig ntawm lub qhov txhab. Qhov no tau pom, tab sis tseem, vim li cas hydrogen peroxide ua npuas ncauj ntawm qhov txhab? Thaum catalaselos rau hauv kev sib cuag nrog nws, nws converts hydrogen peroxide (H₂O₂) rau hauv dej (H₂. O) thiab oxygen (O_2).

Catalase ua cov txheej txheem ntawm kev sib cais peroxide rau hauv dej thiab oxygen zoo heev - txog li 200,000 cov tshuaj tiv thaiv ib ob. Cov npuas uas peb pom thaum hydrogen peroxide foams ntawm lub qhov txhab yog cov pa npuas tsim los ntawm kev ua ntawm catalase.

Kev lom zem chemistry

Yog tias koj sim nco ntsoov cov lus qhia hauv tsev kawm ntawv chemistry, cov duab yuav tshwm sim hauv koj lub taub hau: hauv chav kawm, tus kws qhia ntawv nchuav me me ntawm hydrogen peroxide rau ntawm cov qos yaj ywm txiav - tib yam tshwm sim. Tus kws qhia ntawv nug, "Vim li cas hydrogen peroxide ua npuas ncauj rau ntawm daim tawv nqaij koj txiav thiab cov qos yaj ywm?" Tsis tas tos cov lus teb, tus kws qhia nws tus kheej teb tias: "Vim nyob rau hauv lub hlwb puas ntawm cov qos yaj ywm, zoo li cov hlwb puas ntawm cov epidermis, catalase raug tso tawm."

Peroxide tsis ua npuas dej hauv lub raj mis lossis ntawm daim tawv nqaij tag nrho vim tias lawv tsis muaj catalase los ua cov tshuaj tiv thaiv. Hydrogen peroxide yog ruaj khov ntawm chav tsev kub.

Koj puas tau xav paub yog vim li cas hydrogen peroxide npuas ntawm qhov txiav lossis qhov txhab tab sis tsis npuas ntawm daim tawv nqaij?

Vim li cas hydrogen peroxide foams thiab kub: cov lus piav qhia kev tshawb fawb

Yog li peb pom tias hydrogen peroxide hloov mus ua npuas thaum nws nkag mus rau hauv cov enzyme hu ua catalase. Feem ntau cov hlwbLub cev muaj nws, yog li thaum cov ntaub so ntswg puas lawm, cov enzyme raug tso tawm thiab ua rau muaj kev cuam tshuam nrog peroxide.

Catalase tso cai rau koj kom decompose H₂O₂ rau hauv dej (H₂O) thiab oxygen (O_{2). Zoo li lwm cov enzymes, nws tsis yog siv rau hauv cov tshuaj tiv thaiv tab sis yog rov siv dua los ua kom muaj kev cuam tshuam ntau dua. Catalase txhawb nqa txog 200,000 cov tshuaj tiv thaiv ib ob.}

Cov npuas uas peb pom thaum nchuav tshuaj tua kab mob hla kev txiav yog npuas cov pa oxygen. Ntshav, hlwb, thiab qee cov kab mob (xws li staphylococci) muaj catalase. Thaum nyob rau saum npoo ntawm daim tawv nqaij nws tsis muaj. Yog li, peroxide, thaum sib cuag nrog cov tawv nqaij, tsis hnov tsw thiab npuas tsis tsim.

Tsis tas li, vim tias hydrogen peroxide muaj cov haujlwm siab, nws muaj lub neej txee tom qab qhib. Hauv lwm lo lus, yog tias tsis muaj qhov npuas tshwm sim thaum siv hydrogen peroxide rau ntawm qhov txhab lossis cov hlab ntshav, nws zoo li tias peroxide tsis ua haujlwm thiab tau siv sijhawm ntev.

Hydrogen peroxide ua tshuaj tua kab mob

Kev siv ntxov tshaj plaws ntawm hydrogen peroxide yog cov tshuaj dawb, vim tias cov txheej txheem oxidation zoo ntawm kev hloov lossis rhuav tshem cov xim molecules. Txawm li cas los xij, txij li xyoo 1920s, peroxide tau siv los ua cov tshuaj tua kab mob muaj zog. Yog li, lo lus nug: "Vim li cas hydrogen peroxide ua npuas ncauj rau ntawm qhov txhab?" - neeg tsis yog thawj tus nugxyoo.

kho cov khoom ntawm peroxide

Cov yam ntxwv tshuaj ntawm peroxide xyuas kom nws tuaj yeem kho qhov txhab ntawm ntau txoj hauv kev. Ua ntej, vim nws yog cov tshuaj aqueous, peroxide pab ntxuav cov av thiab cov hlwb puas thiab "loos" cov tawv nqaij los ntawm cov ntshav qhuav. Cov npuas hauv qhov no pab tshem cov khib nyiab los ntawm kev puas tsuaj.

Txawm hais tias nws yuav tsum tau muab sau tseg tias cov pa tawm los ntawm peroxide tsis tua txhua hom kab mob. Tsis tas li ntawd, peroxide muaj zog bacteriostatic zog, uas txhais tau hais tias kev siv hydrogen peroxide ntawm lub qhov txhab tiv thaiv kev loj hlob thiab kev loj hlob ntawm cov kab mob. Cov peroxide ua raws li sporicide, tua cov kab mob fungal spores.

Txawm li cas los xij, nws tsis yog ib qho tshuaj tua kab mob zoo tshaj plaws vim tias nws tseem ua rau fibroblasts. Nws yog ib hom kab mob sib txuas uas cov hlwb ntawm lub cev siv los kho qhov txhab sai sai thiab kho cov tawv nqaij puas.

Yog li, peroxide yuav tsum tsis txhob siv los ua cov tshuaj tua kab mob tas mus li hauv kev kho cov qhov txhab, vim nws tuaj yeem ua rau cov txheej txheem kho kom zoo. Yog li, feem ntau cov kws kho mob thiab kws kho mob dermatologist tsis txhob siv nws los tua cov qhov txhab qhib, vim qhov no tsuas yog ua rau qhov xwm txheej hnyav dua.

Tshuaj xyuas seb cov peroxide hauv lub vial puas ua haujlwm

Tom qab tag nrho, hydrogen peroxide yog tsim los ntawm dej thiab oxygen, yog li thaum koj siv peroxide rau ntawm qhov txhab, koj yeej siv dej dawb. Hmoov zoo, muaj ib qho kev sim yooj yim kom paub tseeb tiasIb lub raj mis ntawm hydrogen peroxide muaj cov khoom xyaw nquag: tsuas yog pov cov kua me me rau hauv lub dab dej. Cov hlau (xws li nyob ze cov dej ntws) catalyze hloov dua siab tshiab ntawm peroxide rau oxygen thiab dej - qhov no yog vim li cas hydrogen peroxide foams ntawm lub qhov txhab thiab txawm nyob rau hauv lub dab dej!

Yog tias muaj npuas, koj tuaj yeem paub tseeb tias cov peroxide zoo. Yog tias koj tsis pom lawv, nws yog lub sijhawm los mus rau lub tsev muag tshuaj rau lub raj mis tshiab ntawm hydrogen peroxide. Nws yog ib qho tsim nyog yuav tsum nco ntsoov tias kev khaws cov tshuaj hauv qhov xwm txheej zoo yuav pab kom lub neej ntev. Xyuas kom tseeb tias nws nyob hauv lub thawv tsaus thiab hauv qhov chaw txias.