Cov teeb meem tshwm sim los ntawm qhov tsis xws ntawm electroplated iav electrodes ntawm hluav taws xob cua sov raj

Cov teeb meem tshwm sim los ntawm qhov tsis xws ntawm electroplated iav electrodes ntawm hluav taws xob cua sov raj

Hauv cov mis, g yog lub peev xwm electrode ntawm iav electrode hauv cov tshuaj nrog aH ntxiv rau {{0}}; Kg yog lub electrode muaj nuj nqi ntawm lub iav electrode, theoretically 2.303RTF (qhov twg R yog cov pa tsis tu ncua, F yog Faraday tas li, thiab T yog qhov kub thiab txias), tab sis qhov tseeb nws feem ntau tsawg dua tus nqi no. Nyob rau hauv txoj kev xav, thaum lub iav electrode muab tso rau hauv 0.1mol / LHCl tov, pH tus nqi ntawm ob sab ntawm iav daim nyias nyias yog sib npaug, thiab yuav tsis muaj hydrogen ion concentration sib txawv ua rau H ntxiv rau diffuse sab hauv lossis sab nraum lub electrode. Lub sijhawm no, lub peev xwm ntawm daim nyias nyias yuav tsum sib npaug rau xoom. Tab sis qhov tseeb, tseem muaj qhov sib txawv ntawm (0-30) mV, uas yog hu ua asymmetric peev xwm. Lub peev xwm asymmetric ntawm cov electrodes sib txawv ntawm tib tus qauv kuj txawv. Yog li ntawd, cov iav electrode yuav tsum tau calibrated nrog cov txheej txheem tsis daws teeb meem los ntawm pH meter thaum nws siv thawj zaug.

Lub pH meter ntsuas lub zog hluav taws xob ntawm lub roj teeb uas muaj lub iav electrode, ntsuas kev daws teeb meem thiab siv hluav taws xob siv (feem ntau yog calomel electrode saturated). Cov iav electrode thiab siv electrode feem ntau sib cais hauv kev ntsuas cov cuab yeej qub. Rau qhov yooj yim ntawm kev siv, iav electrode feem ntau ua ke nrog cov calomel saturated electrode los ua cov khoom siv hluav taws xob sib xyaw thaum ntsuas cov cuab yeej (tshwj xeeb tshaj yog cov cwj mem pH meter) lossis kev ntsuas kev lag luam thiab tswj. Cov hluav taws xob sib xyaw yuav tsum tau ntim nrog cov tshuaj saturated potassium chloride, thiab cov npuas yuav tsum tau muab tshem tawm thiab kaw kom zoo.

4. Cov teeb meem tshwm sim los ntawm qhov tsis xws ntawm iav electrodes

Ntxiv nrog rau cov iav zaj duab xis nyias thiab yooj yim puas (feem ntau tiv thaiv los ntawm cov yas tiv thaiv npog), lwm yam tsis xws luag hauv iav electrode kuj tuaj yeem ua rau muaj teeb meem ntau.

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