Lub neej ntawm pH electrode yog dab tsi?
Lub neej ua haujlwm tau zoo ntawm kev siv thiab tswj pH electrode yog nyob ib ncig ntawm ib mus rau peb xyoos. Cov yam tseem ceeb uas ua rau lub neej luv luv ntawm electrode muaj xws li: qhov kub thiab txias thiab ntsuas pH huab cua, txawm tias cov electrodes uas tswj tau zoo. Yog tias qhov kev ua tau zoo ntawm electrode pib degrade, pH rhiab iav daim nyias nyias tuaj yeem rov tsim dua thiab cov electrode kev ua tau zoo tuaj yeem rov qab mus rau qib dhau los.
Yuav ua li cas xaiv qhov tseeb pH electrode?
Txhawm rau kom ntseeg tau tias qhov ntsuas pH zoo tshaj plaws, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov pH electrode kom raug rau txhua daim ntawv thov. Cov qauv qauv tseem ceeb tshaj plaws yog: tshuaj lom neeg muaj pes tsawg leeg, homogeneity, kub, txheej txheem siab, pH ntau thiab lub nkoj qhov ntev (ntev thiab dav txwv). Kev xaiv electrode yog ib qho tseem ceeb tshwj xeeb rau cov tsis muaj dej, tsis tshua muaj hluav taws xob, muaj protein ntau thiab viscous ntsuas xov xwm, qhov twg lub hom phiaj dav dav iav electrodes raug cuam tshuam rau ntau yam cuam tshuam uas ua rau ntsuas qhov yuam kev. Lub sij hawm teb thiab qhov tseeb ntawm ib qho electrode nyob ntawm ntau yam. Kev ntsuas ntawm pH huab cua thiab qhov kub thiab txias lossis qis conductivity muaj lub sij hawm teb ntev dua li kev ntsuas ntawm nruab nrab pH aqueous qhov tseem ceeb ntawm chav tsev kub.
Yuav ua li cas tswj / ntxuav cov electrodes?
Kev saib xyuas niaj hnub yog qhov tseem ceeb los ua kom lub neej ntev ntawm koj cov pH electrode. Thaum cov kua theem yuav qis dua cov kua theem ntawm cov qauv tov, nws yog ib qhov tsim nyog los sau cov electrolyte-filled electrode nrog electrolyte. Kev saib xyuas tiv thaiv cov qauv rov qab mus rau hauv electrode. Tag nrho cov siv electrolyte yuav tsum tau hloov ib ntus (kwv yees li ib hlis ib zaug). Qhov no ua kom cov electrolyte yog tshiab thiab tsis crystallize thaum lub sij hawm ntsuas vim evaporation los ntawm qhib filling spout. Nws yog ib qho tseem ceeb kom ntseeg tau tias tsis muaj huab cua npuas tsim nyob rau hauv lub electrode, tshwj xeeb tshaj yog nyob ze ntawm qhov sib tshuam. Yog tias qhov no tshwm sim, qhov ntsuas ntsuas yuav tsis ruaj khov. Txhawm rau tshem tawm cov npuas npuas, maj mam co lub electrode zoo ib yam li co lub ntsuas kub.
Txhawm rau ntxuav cov electrode, yaug nws nrog dej deionized tom qab txhua qhov ntsuas, tab sis tsis txhob so nrog daim ntawv phuam. Cov ntaub so ntswg ntawm daim ntawv muaj peev xwm los khawb thiab ua puas rau pH-sensitive iav daim nyias nyias, tshem tawm cov gel txheej, thiab tsim kom muaj qhov zoo li qub ntawm cov electrode. Cov nqi hluav taws xob zoo li no tuaj yeem ua rau lub ntsuas ntsuas ntsuas tsis ruaj khov. Cov txheej txheem ntxuav tshwj xeeb tej zaum yuav xav tau tom qab kis kab mob nrog qee cov qauv.
