Kuv puas tuaj yeem siv formaldehyde es tsis txhob paraformaldehyde?
Kuv puas tuaj yeem siv formaldehyde es tsis txhob paraformaldehyde?

Video: Kuv puas tuaj yeem siv formaldehyde es tsis txhob paraformaldehyde?

Video: Kuv puas tuaj yeem siv formaldehyde es tsis txhob paraformaldehyde?
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Paraformaldehyde tsuas yog cov khoom, polymerized daim ntawv ntawm formaldehyde. … Formaldehyde yog ib qho kev kho kom haum rau electron microscopy, tab sis tsis yog qhov zoo tshaj plaws - nws nyob ntawm seb koj xav pom dab tsi. Raws li tau hais los saum toj no, glutaraldehyde yog tag nrho ib qho kev kho kom zoo dua rau EM.

Puas yog formaldehyde tib yam li paraformaldehyde?

Paraformaldehyde yog ib qho polymer ntawm formaldehyde. Paraformaldehyde nws tus kheej tsis yog kho tus neeg sawv cev, thiab yuav tsum tau tawg mus rau hauv nws lub tsev thaiv formaldehyde. Qhov no tuaj yeem ua tau los ntawm cov cua sov lossis cov xwm txheej yooj yim kom txog thaum nws tau solubilized. Thaum ntawd tshwm sim, qhov tseem ceeb lawv yeej ib yam nkaus.

Vim li cas paraformaldehyde siv hloov formaldehyde?

Paraformaldehyde (tshuaj lub npe yog polyoxymethylene) yog cov hmoov ntawm polymerized formaldehyde uas los ntawm nws tus kheej tsis tuaj yeem kho cov ntaub so ntswg… lub zog ntawm formalin. Formalin kuj tuaj yeem ua rau hauv daim ntawv tsis muaj cawv los ntawm cov hmoov paraformaldehyde.

Puas yog 4 PFA zoo ib yam li 10 formalin?

Nws yog ib qho tseem ceeb kom paub tias qhov concentrations ntawm formaldehyde nyob rau hauv ob qho tib si 10% (v/v) NBF thiab 4% (w/v) PFA yuav luag zoo tib yam… Qhov no tshwm sim nyob rau hauv 10% ntim / ntim, uas yuav luag sib npaug rau 3.7% qhov hnyav rau ib lub ntim formaldehyde concentration - zoo ib yam li 4% (qhov hnyav / ntim) PFA ua los ntawm cov hmoov paraformaldehyde.

Puas formaldehyde siv los kho?

feem ntau siv fixative hauv histology yog formaldehyde. Nws feem ntau yog siv los ua 10% nruab nrab buffered formalin (NBF), uas yog kwv yees. … Formaldehyde kho cov ntaub so ntswg los ntawm kev sib txuas ntawm cov proteins, feem ntau cov seem ntawm cov amino acid lysine.

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