Yuav Ua Li Cas Soak pH Combination Electrode kom zoo?
Keeb kwm kev tsom xam
Lub pH electrode yuav tsum tau ntub dej ua ntej siv, vim tias pH qhov muag teev yog cov iav tshwj xeeb. Muaj ib txheej nyias nyias hydrated gel rau saum npoo ntawm cov iav membrane. Nws tuaj yeem teb tau zoo rau H ions hauv cov tshuaj tsuas yog thaum nws ntub tag nrho. Lub caij no, soaking iav electrode tuaj yeem txo qhov peev xwm asymmetric thiab ruaj khov.
PH iav electrodes feem ntau tuaj yeem tsau rau hauv dej distilled lossis pH 4 tsis muaj tshuaj. Feem ntau nws yog qhov zoo dua los siv cov tshuaj pH 4 tsis zoo, nrog lub sijhawm so ntawm 8 teev mus rau 24 teev lossis ntev dua, nyob ntawm qhov tuab ntawm cov iav iav zaj duab xis thiab qib ntawm electrode aging.
Nyob rau tib lub sijhawm, cov kua interface ntawm cov khoom siv electrode kuj yuav tsum tau ntub dej. Vim hais tias yog cov kua interface dries, lub peev xwm ntawm cov kua interface yuav nce los yog tsis ruaj khov. Yog li, cov kua dej ntawm cov khoom siv electrode yuav tsum ua raws li cov lus qhia sab nraud ntawm cov khoom siv electrode, uas yog 3.3mol / L KCl tov lossis saturated KCL tov. Lub sij hawm soaking feem ntau yog ob peb teev.
Ua kom dej zoo pH sib xyaw electrodes
Soak hauv pH 4 tsis muaj tshuaj uas muaj KCL rau tib lub sijhawm cuam tshuam rau ob qho tib si iav thiab cov kua sib txuas. Kev saib xyuas tshwj xeeb yuav tsum tau them rau ntawm no, vim tias yav dhau los, tib neeg siv los ntub ib qho pH iav electrodes hauv dej deionized lossis pH 4 tsis muaj tshuaj. Tom qab ntawd, thaum siv pH sib xyaw electrodes, txoj kev ntub dej no tseem siv tau, thiab txawm tias cov lus qhia tsis raug tau muab rau hauv cov neeg siv phau ntawv ntawm qee qhov pH tsis raug electrodes.
Qhov txiaj ntsig ncaj qha ntawm txoj kev ntub dej tsis raug no yog tias nws hloov pH electrode nrog kev ua haujlwm zoo rau hauv cov electrode nrog cov lus teb qeeb thiab qhov tsis zoo. Tsis tas li ntawd, lub sij hawm soaking ntev dua, qhov ua tau zoo dua, vim tias tom qab lub sijhawm so ntev, KCL concentration hauv cov kua sib txuas (xws li hauv cov xuab zeb core) tau txo qis heev, ua rau muaj kev nce ntxiv thiab tsis ruaj khov ntawm cov kua sib cuam tshuam. Tau kawg, tsuav yog cov electrode rov qab tsau rau hauv cov kua dej kom raug rau ob peb teev, nws tseem yuav rov zoo.
Tsis tas li ntawd, pH electrodes yuav tsum tsis txhob immersed nyob rau hauv nruab nrab los yog alkaline tsis daws teeb meem, raws li ntev immersion nyob rau hauv xws li kev daws yuav ua rau cov pH iav zaj duab xis teb maj mam. Kev npaj kom raug ntawm pH electrode soaking tov: Siv ib pob ntawv ntawm pH 4.00 tsis (250ml), yaj nws nyob rau hauv 250ml ntawm cov dej ntshiab, ntxiv 56g ntawm analytical qib KCl, cua sov kom tsim nyog, thiab do kom txog thaum yaj tag.
