I-ion electrode ekhethiweyo yinzwa ye-electrochemical amandla ayo ahambelana ne-logarithm yomsebenzi we-ion kwisisombululo esinikiweyo.Luhlobo lwenzwa ye-electrochemical esebenzisa i-membrane enokubakho ukumisela umsebenzi we-ion okanye ugxininiso kwisisombululo.Kukwi-membrane electrode,kabani icandelo eliphambili yinwebu yokuva ye-electrode.Indlela ye-ion ekhethiweyo ye-electrode lisebe lohlalutyo lwe-potentiometric.Ngokuqhelekileyo isetyenziswe kwindlela ye-potentiometric ngokuthe ngqo kunye ne-titration ye-potentiometric.Imodeli eluncedo ibonakaliswe kwi yawo wide uluhlu lwesicelo.Ngaphezu koko, it inokulinganisa ukuxinwa kwee-ion ezithile kwisisombululo. Ukongeza, it ayichatshazelwa yi iumbala kwaye unxunguphalo kunye nezinye izinto ze ireagent.
Inkqubo yokulinganisa i-ion ekhethiweyo ye-electrode
Xa i-ion elinganisiweyo kwisisombululo se-electrode iqhagamshelana ne-electrode, ukufuduka kwe-ion kwenzeka kwi-aquifer ye-ion ekhethiweyo ye-membrane ye-electrode matrix.Kukho amandla ekutshintshisweni kwentlawulo yeeyoni ezifudukayo, ezitshintsha amandla phakathi kwe-membrane ebusweni.Ngaloo ndlela, umahluko onokuthi uveliswe phakathi kwe-electrode yokulinganisa kunye ne-electrode yereferensi.Kufanelekile ukuba umahluko onokuthi uveliswe phakathi kwe-ion ekhethiweyo ye-electrode kunye nee-ion eziza kulinganiswa kwisisombululo kufuneka uhambelane ne-Nernst equation, eyiyo.
E=E0+ log10a(x)
E: Ukulinganiswa kwamandla
E0: Umgangatho onokwenzeka we-electrode (rhoqo)
R: Irhasi ayitshintshi
T: iqondo lobushushu
Z: Ionic valence
F: Faraday rhoqo
a(x): umsebenzi we-ion
Ingabonwa ukuba amandla e-electrode alinganisiweyo alingana nelogarithm yomsebenzi we "X" ion.Xa i-coefficient yomsebenzi ihlala ihleli, amandla e-electrode nawo alingana nelogarithm ye-ion concentration (C).Ngale ndlela, umsebenzi okanye ukugxilwa kwe-ion kwisisombululo kunokufumaneka.
Ixesha lokuposa: Jan-30-2023