Taw qhia rau Cov Kauj Ruam Kho Kom Zoo rau pH Meter
1. Cia ntawm pH iav electrode
Lub sij hawm luv luv: khaws cia hauv cov tshuaj tsis muaj pH =4;
Lub sij hawm ntev: khaws cia hauv cov tshuaj tsis nrog pH=7.
2. Kev ntxuav ntawm pH iav electrode
Kev kis kab mob ntawm cov iav electrode npuas tuaj yeem ua rau lub sijhawm teb electrode. Siv CCl4 los yog tshuaj xab npum los so cov av, ces muab tso rau hauv dej distilled rau ib hnub thiab hmo ntuj ua ntej siv txuas ntxiv. Thaum muaj kuab paug hnyav, soak hauv 5% HF tov rau 10-20 feeb, yaug nrog dej tam sim ntawd, thiab muab tso rau hauv 0.1N HCl tov rau ib hnub thiab hmo ntuj ua ntej siv txuas ntxiv.
3. Kev kho kev laus ntawm iav electrodes
Kev laus ntawm cov iav electrodes muaj feem xyuam nrog kev hloov maj mam hloov ntawm cov nplaum txheej txheej. Lub qub electrode muaj cov lus teb qeeb, siab membrane tsis kam, thiab qis nqes. Etching tawm txheej txheej ntawm cov nplaum nplaum nrog hydrofluoric acid feem ntau tuaj yeem txhim kho electrode kev ua tau zoo. Yog tias txoj kev no tuaj yeem siv tsis tu ncua tshem tawm cov nplaum nplaum sab hauv thiab sab nrauv, lub neej ntev ntawm cov electrode yuav luag tsis kawg.
4. Cia cov khoom siv electrode
Qhov zoo tshaj plaws cia tshuaj rau cov nyiaj chloride electrodes yog saturated potassium chloride tov. High concentration potassium chloride tov tuaj yeem tiv thaiv cov nyiaj chloride los ntawm precipitating ntawm cov kua interface thiab tswj cov kua hauv kev ua haujlwm. Txoj kev no kuj tseem siv tau rau kev khaws cia ntawm cov khoom siv electrodes.
5. Regeneration ntawm siv electrode
Feem ntau ntawm cov teeb meem nrog kev siv electrodes yog tshwm sim los ntawm kev txhaws ntawm cov kua interface, uas tuaj yeem daws tau los ntawm cov txheej txheem hauv qab no:
(1) Soaking tov interface: Kub sib tov ntawm 10% saturated potassium chloride tov thiab 90% distilled dej mus rau 60-70 degree, raus lub electrode nyob rau hauv txog 5cm, thiab tsau rau 20 feeb mus rau 1 teev. Txoj kev no tuaj yeem yaj cov muaju ntawm qhov kawg ntawm electrode.
(2) Ammonia immersion: Thaum cov kua sib txuas yog thaiv los ntawm cov nyiaj chloride, cov dej ntshiab ammonia tuaj yeem siv rau immersion. Txoj kev tshwj xeeb yog sau thiab ntxuav cov electrode, ntws cov kua, thiab muab tso rau hauv dej ammonia rau 10-20 feeb, tab sis tsis txhob cia cov dej ammonia nkag mus rau hauv lub electrode. Tshem cov electrode thiab ntxuav nws nrog dej distilled. Ntxiv cov kua filling dua thiab siv txuas ntxiv mus.
(3) Nqus txoj kev: Npog cov ntaub ntawv siv electrode kua hlws ris nrog lub hose, siv lub twj tso kua mis dej ntws los nqus cov kua ua kua los ntawm cov kua hlws ris, thiab tshem tawm cov khoom thaiv.
(4) Boiling kua interface: Cov kua interface ntawm cov nyiaj chloride siv electrode yog immersed nyob rau hauv boiling dej rau 10-20 vib nas this. Nco ntsoov tias cov electrode yuav tsum tau txias rau chav tsev kub ua ntej boiling tom ntej.
(5) Thaum cov txheej txheem saum toj no tsis muaj txiaj ntsig, kev siv tshuab xws li cov ntawv xuab zeb sib tsoo tuaj yeem siv los tshem tawm cov blockages. Txoj kev no yuav ua rau cov xuab zeb hauv av tau muab tso rau hauv cov kua interface, uas ua rau muaj kev cuam tshuam mus tas li.
