Na'urar lantarki mai zaɓin ion wani firikwensin lantarki ne wanda ƙarfinsa yake layi ɗaya da logarithm na aikin ion a cikin wani bayani. Wani nau'in firikwensin lantarki ne wanda ke amfani da ƙarfin membrane don tantance aikin ion ko yawan maida hankali a cikin bayani. Yana cikin membrane electrode,na wa Babban ɓangaren shine membrane na ji na lantarki. Hanyar electrode na zaɓi na ion reshe ne na nazarin potentiometric. Ana amfani da shi gabaɗaya a cikin hanyar potentiometric kai tsaye da titration na potentiometric. An siffanta samfurin amfani a cikin w ɗinsakewayon aikace-aikacen ideBugu da ƙari, it za a iya aunawa yawan takamaiman ions a cikin maganin. Bugu da ƙari, nit ba ya shafar Lallailauni kuma datti da sauran abubuwan da ke haifar da mai amsawa.
Tsarin aunawa na electrode mai zaɓe na ion
Lokacin da ions ɗin da aka auna a cikin maganin lantarki suka haɗu da lantarki, ƙaurar ions tana faruwa a cikin ma'aunin membrane na ion selective electrode. Akwai yuwuwar canjin caji na ions masu ƙaura, wanda ke canza yuwuwar tsakanin saman membrane. Don haka, ana samar da bambanci mai yuwuwa tsakanin electrode aunawa da electrode na tunani. Ya dace cewa bambancin yuwuwar da aka samar tsakanin electrode selective ion da ions ɗin da za a auna a cikin maganin ya kamata ya bi ka'idar Nernst, wanda shine
E=E0+ log10a(x)
E: An auna yuwuwar
E0: Matsakaicin ƙarfin lantarki (mai ɗorewa)
R: Daidaiton iskar gas
T: Zafin jiki
Z: Valon Ionic
F: Faraday constant
a(x): aikin ion
Za a iya ganin cewa ƙarfin lantarki da aka auna yana daidai da logarithm na aikin ions na "X". Idan ma'aunin aiki ya kasance daidai, ƙarfin lantarki kuma yana daidai da logarithm na yawan ions (C). Ta wannan hanyar, ana iya samun aiki ko yawan ions a cikin maganin.
Lokacin Saƙo: Janairu-30-2023