Kev ntsuas txij nkawm:
1. PH iav electrode cia
Luv-lub sij hawm: muab tso rau hauv pH = 4 tsis tov;
Ntev ntev: Khw hauv pH = 7 tsis tov.
2. Ntxuav lub pH iav electrode
Kev pom zoo ntawm cov iav electrode teeb tau tuaj yeem ua rau lub sij hawm teb electrode. Muaj CCl4 los yog tshuaj xub npum detonated, thiab tom qab ntawd ntws rau hauv cov dej tawm tom qab ib hnub thiab yav tsaus ntuj siv. Kev ua paug yog qhov loj, koj tuaj yeem siv 5% HF daws li 10 mus rau 20 feeb, yaug dej yaug sai, thiab tom qab ntawd ntim hauv 0.1 N HCS tshuaj txhua hnub thiab hmo ntuj.
3.qhov dej electrode kev laus kev kho mob
Cov laus ntawm cov iav electrode yog muaj feem xyuam rau cov kev hloov maj mam hloov ntawm cov txheej txheem nplaum. Lub qub electrode qeeb teb, siab membrane tsis kam, tsawg nqes hav. Etching txheej txheej nrog hydrofluoric acid feem ntau pab txoj kev kawm electrode. Yog tias koj tuaj yeem siv hom no kom tsis tu ncua cov txheej txheem sab nraud thiab sab nraud, lub neej ntawm qhov electrode yog qhov yuav luag tsis tau.
4. qhia txog kev cia khoom electrode
Silver - silver chloride electrode yog qhov zoo tshaj plaws cia kua yog saturated potassium chloride tov, siab ntau ntawm cov kua tshuaj kua tshuaj muaj peev xwm tiv thaiv tau cov nag ntawm cov kua chloride nyob rau hauv cov kua kav, thiab tuav kua nkag mus hauv kev ua haujlwm. Qhov no yog qhov tseem ceeb rau kev cia khoom ntawm cov hluav taws xob electrodes.
5. qhov kev siv electrode rov qab
Feem ntau ntawm cov teeb meem uas siv los ntawm cov ntaub ntawv electrode yog vim los ntawm kev khawb ntawm cov kav dej, yuav daws tau los ntawm cov nram qab no:
(1) kua dej nruab nrab: nrog 10% saturated potassium chloride tov thiab 90% dej sib tov sib xyaw, diav rau 60 ~ 70 ℃, qhov electrode raus hauv li 5cm, soak 20 feeb rau 1 teev. Hom no yauv ua rau cov hlua electrode crystallization.
(2) Ammonia soaking: Thaum lub rhawv dej khib nyiab nrog cov tshuaj chloride, nws yuav tau leached nrog cov concentrated ammonia. Lub hom phiaj yog siv cov tshuab hluav taws xob tom qab, tom qab cov kua qaub, muab tshuaj rau hauv ammonia rau 10 mus rau 20 feeb, tab sis tsis txhob cia ammonia nkag mus rau sab hauv ntawm electrode. Tshem cov electrode ntxuav nrog dej distilled, rov qab ua kua thiab siv txuas ntxiv mus.
(3) lub tshuab nqus tsev: lub hose ntxiab siv cov electrode hlawv, kev siv cov dej tso nqus tawm, lub qhov nqus ntawm cov kua ua kua los ntawm cov kua nkag mus rau hauv lub cev, tshem tawm cov khoom siv thaiv.
(4) tshuaj kua dej rhaub (boiled liquid junction): Silver - silver chloride siv qhov chaw nruab nrab ntawm cov dej hauv lub taub dej kub rau 10 mus rau 20 feeb. Nco ntsoov tias cov electrode yuav tsum tau txias rau chav sov kub ua ntej yuav rhaub tom ntej.
(5) Thaum txoj cai saum toj no tsis muaj tseeb, koj tuaj yeem siv cov xuab zeb sib tsoo txhim kho kom tsis txhob muaj kev cuam tshuam. Txoj kev no yuav ua rau cov xuab zeb abrasive rau hauv cov kua kav. Ua rau qhov ruaj khov.
Lub tuam txhab tshwj xeeb hauv kev tsim txhua yam ntawm lub ntsuas phaj , txais tos mus rau sab laj muab tswv yim.
Email: info@yingaolab.com
