I-electrode ekhethiwe ye-ion

I-electrode ekhethiwe ye-ion

I-ion selective electrode iyinzwa ye-electrochemical amandla ayo ahambisana ne-logarithm yomsebenzi we-ion kusixazululo esinikeziwe.Iwuhlobo lwenzwa ye-electrochemical esebenzisa amandla olwelwesi ukuze anqume umsebenzi we-ion noma ukugxila esixazululweni.Iyingxenye ye-membrane electrode,kabani Ingxenye eyinhloko yi-membrane yezinzwa ye-electrode.Indlela ye-ion ekhethiwe ye-electrode igatsha lokuhlaziywa kwe-potentiometric.Ngokuvamile isetshenziswa ngendlela eqondile ye-potentiometric kanye ne-titration ye-potentiometric.Imodeli yokusetshenziswa ifakwe ku wawo wIde yohlelo lokusebenza.Ngaphezu kwalokho, it ingakala ukuhlushwa kwama-ion athile esixazululweni. Ngaphezu kwalokho, it ayithinteki yi iumbala futhi imfucumfucu nezinye izici ze i-reagent.

I-Nitrate Ion Selective Electrod

Inqubo yokulinganisa ye-electrode ekhethiwe ye-ion

Lapho ama-ion akalwayo kusixazululo se-electrode ethintana ne-electrode, ukufuduka kwe-ion kwenzeka ku-aquifer ye-ion selective electrode membrane matrix.Kukhona amandla ekushintsheni kokushaja kwama-ion afudukayo, okushintsha amandla phakathi kwezindawo zolwelwesi.Ngakho-ke, umehluko ongaba khona ukhiqizwa phakathi kwe-electrode yokulinganisa kanye ne-electrode yereferensi.Kuhle ukuthi umehluko ongaba khona okhiqizwayo phakathi kwe-electrode ekhethiwe ye-ion nama-ion azokalwa esixazululweni kufanele uhambisane nezibalo ze-Nernst, okuyi-

E=E0+ log10a(x)

E: Amandla alinganiselwe

I-E0: Amandla e-electrode ajwayelekile (njalo)

R: Igesi njalo

T: Izinga lokushisa

Z: I-ionic valence

F: Faraday njalo

a(x): umsebenzi we-ion

Kungabonakala ukuthi amandla e-electrode alinganisiwe alingana ne-logarithm yomsebenzi wama-ion "X".Uma i-coefficient yomsebenzi ihlala ingashintshi, amandla e-electrode nawo alingana ne-logarithm ye-ion concentration (C).Ngale ndlela, umsebenzi noma ukugxila kwe-ion kusixazululo kungatholakala.

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Isikhathi sokuthumela: Jan-30-2023