Yuav kho pH electrode li cas?
Qhov "kev puas tsuaj" ntawm pH composite electrode, qhov tshwm sim yog qhov txo qis ntawm rhiab heev gradient, qeeb teb thiab kev nyeem ntawv tsis zoo, tuaj yeem tshwm sim los ntawm peb yam hauv qab no, thiab feem ntau cov neeg siv khoom tuaj yeem siv cov txheej txheem tsim nyog los kho nws:
(1) Lub qhov muag hluav taws xob thiab cov kua dej sib txuas yog cov paug, thiab cov av tuaj yeem ua tib zoo tshem tawm nrog txhuam zoo, paj rwb lossis tshuaj txhuam hniav. Kev tiv thaiv npog ntawm qee lub plhaub yas electrode taub hau tuaj yeem raug tshem tawm, uas yooj yim rau kev ntxuav. Yog tias muaj kuab paug hnyav, nws tuaj yeem ntxuav nrog xab npum raws li txoj hauv kev hauv Tshooj 8.
(2) Cov tshuaj siv sab nraud yog qias neeg, thiab qee cov qauv electrode tuaj yeem muab ntxiv rau cov tshuaj. Nyob rau lub sijhawm no, cov tshuaj siv sab nraud ntawm cov electrode tuaj yeem tso tawm nrog lub koob txhaj tshuaj, thiab cov tshuaj tshiab 3.3mol / L lossis saturated KCl tau npaj, thiab tom qab ntawd ntxiv mus rau hauv, xyuam xim rub tawm thaum ntxiv rau thawj zaug. los yog zaum ob, thiaj li yuav ntxuav lub puab kab noj hniav ntawm lub electrode.
(3) Kev laus ntawm cov iav rhiab zaj duab xis: Soak lub qhov muag hluav taws xob hauv 0.1mol/L dilute hydrochloric acid (9mL hydrochloric acid diluted rau 100mL nrog dej ntshiab) rau 24 teev, ntxuav nws nrog dej ntshiab, thiab tom qab ntawd soak nws nyob rau hauv lub electrode soaking tov rau 24 teev. Yog hais tias tus passivation loj heev, koj tuaj yeem tsau qhov qis kawg ntawm cov electrode hauv 45 hydrofluoric acid tov rau 3 mus rau 5 vib nas this (kev daws teeb meem: 4mL hydrofluoric acid diluted nrog dej ntshiab rau 100mL), ntxuav nws nrog dej ntshiab, thiab tom qab ntawd, Soak lub electrode nyob rau hauv cov tshuaj soaking rau 24 teev los kho nws cov kev ua tau zoo.
Yuav ua li cas ntxuav pH electrode?
Tom qab lub teeb thiab cov kua hlws ris muaj kuab paug, lawv yuav tsum tau muab ntxuav nrog cov kuab tshuaj hauv qab no, tom qab ntawd ntxuav nrog dej deionized kom tshem tawm cov kuab tshuaj, thiab cov electrodes yuav tsum tau muab tso rau hauv cov kua dej ua kom muaj zog.
Cov tshuaj tua kab mob ntxuav
Inorganic hlau oxide tsawg dua 1mol / L dilute acid
Organic roj thiab rog Dilute detergent (tsis muaj zog acid)
Resin macromolecular tshuaj Dilute cawv, acetone, ether
Protein ntshav cell sediment Acid enzyme tov (Shimu raw ntsiav tshuaj)
Pigment zoo li cov tshuaj dilute tshuaj dawb, hydrogen peroxide
