Ion selective electrode bụ ihe mmetụta electrochemical nke ike ya nwere linear na logarithm nke ọrụ ion na ngwọta enyere. Ọ bụ ụdị ihe mmetụta electrochemical nke na-eji ikike akpụkpọ ahụ chọpụta ọrụ ion ma ọ bụ itinye uche na ngwọta. Ọ bụ nke membran electrode,onye isi akụrụngwa bụ akpụkpọ ahụ nke electrode. Usoro electrode nhọrọ ion bụ ngalaba nyocha nke potentiometric. A na-ejikarị ya eme ihe na usoro potentiometric ozugbo yana titration potentiometric. A na-ama ụdị ọrụ ahụ n'ime ya wide ngwa nso. Ọzọkwa, it nwere ike tụọ ntinye nke ion kpọmkwem na ngwọta. Na mgbakwunye, it adịghị emetụta ya nkeagba na turbidity na ihe ndị ọzọ nke reagent.
Usoro nha nke ion nhọrọ electrode
Mgbe ion ndị a tụrụ atụ na ngwọta electrode na-akpọtụrụ electrode, ion migration na-apụta na aquifer nke ion selective electrode membrane matrix. Enwere ike na mgbanwe ụgwọ nke ions na-akwaga, nke na-agbanwe ike dị n'etiti oghere akpụkpọ ahụ. Ya mere, a na-emepụta ihe dị iche iche n'etiti eletrọd na-atụ ihe na electrode ntụaka. Ọ dị mma na ọdịiche dị n'etiti ion selective electrode na ion ndị a ga-atụle na ngwọta kwesịrị ịgbaso n'usoro Nernst, nke bụ.
E=E0+ log10a(x)
E: Ike atụpụtara
E0: Ikike eletrọd ọkọlọtọ (mgbe niile)
R: Gas mgbe niile
T: Okpomọkụ
Z: Ionic valence
F: Faraday na-adịgide adịgide
a(x): ọrụ ion
Enwere ike ịhụ na ikike electrode a tụrụ atụ dabara na logarithm nke ọrụ ion "X". Mgbe ọnụọgụ ọrụ na-anọgide na-adịgide adịgide, ikike electrode dịkwa nhata na logarithm nke ntinye uche ion (C). N'ụzọ dị otú a, enwere ike nweta ọrụ ma ọ bụ ntinye nke ions na ngwọta.
Oge nzipu: Jan-30-2023