Ua rau pH meter electrode lom
Flow hom siv pH meter electrode, tsim cov hluav taws xob raws nyob ntawm qhov micro-osmotic siab ntawm cov electrolyte hauv electrode, kom cov electrolyte nkag mus rau hauv kev ntsuas ntsuas. Thaum lub nruab nrab siab los yog concentration siab, cov kua hloov channel tsis du, los yog muaj cua npuas, thiab lwm yam, tej zaum yuav cuam tshuam cov leakage ntawm cov electrolyte thiab ua rau kom lub intermediate impedance ntawm txoj kev hluav taws xob. Yog hais tias qhov nruab nrab rov qab mus rau hauv lub electrode ntawm pH meter, nws yuav ua rau cov ntsev ntsev los yog txawm tias nws yuav ua rau cov tshuaj tiv thaiv nrog electrolyte los yog cov electrode sab hauv (xws li AgCl sulfide → Ag2S) kom lom cov electrode.
Nyob rau hauv ib tug muaj zog oxidizing nruab nrab, qhov poob ntawm alkaline tshuaj (feem ntau monovalent cations) nyob rau hauv lub rhiab iav daim nyias nyias yuav ua rau lub hydration txheej thiab ua rau lom ntawm electrode ntawm pH meter. Cov kua qaub-resistant ph meter electrode tuaj yeem raug xaiv, thiab cov txheej txheem tshwj xeeb ntsuas (tshwj xeeb ntxiv ion mis) tau txais los ntawm cov txheej txheem tsim khoom tau txhim kho lub peev xwm los tiv thaiv acidosis ntawm cov iav daim nyias nyias, thiab tib lub sijhawm, qhov tsis muaj peev xwm ntawm cov khoom siv hluav taws xob. electrode sib raug rau pH 0=2, kom cov pH hauv cov kua qaub Linearity raug kho.
Lub pH meter electrode tsis muaj kev sib raug zoo sab nraud ntawm pH2 ~ pH9, thiab ntau ntawm hydronium ion H3O yog yooj yim tsim nyob rau hauv cov kua qaub acidic, yog li ntawd tus naj npawb ntawm H ntawm lub pH meter electrode txo qis. thiab tus nqi pH nce. Na nyob rau hauv qhov nruab nrab muaj zog alkaline tseem yuav koom nrog hauv kev sib pauv ntawm H hauv kev daws teeb meem thiab H ntawm txheej electrode hydration, uas ua rau muaj kev nce hauv electrode peev xwm ntawm pH meter thiab tus nqi pH tsawg.
