Inkcazo yemitha yeph
Imitha ye-pH ibhekisa kwisixhobo esisetyenziselwa ukumisela ixabiso le-pH yesisombululo. Imitha ye-pH isebenza kumgaqo webhetri yegalvanic. Amandla e-electromotive phakathi kwee-electrode ezimbini zebhetri ye-galvanic isekelwe kumthetho we-Nerns, ongahambelani kuphela neempawu ze-electrodes, kodwa zihlobene nokuxinana kwee-ion ze-hydrogen kwisisombululo. Kukho ubudlelwane obuhambelanayo phakathi kwamandla e-electromotive yebhetri ephambili kunye ne-hydrogen ion concentration, kunye ne-logarithm engalunganga yoxinaniso lwe-ion ye-hydrogen lixabiso le-pH. Imitha ye-pH sisixhobo esiqhelekileyo sokuhlalutya, esisetyenziswa ngokubanzi kwezolimo, ukukhuselwa kwendalo kunye noshishino. Umhlaba pH yenye yezinto ezibalulekileyo ezisisiseko zomhlaba. Izinto ezifana nobushushu kunye namandla e-ionic yesisombululo ekufuneka sivavanywe kufuneka siqwalaselwe ngexesha lokulinganisa i-pH.
Umgaqo wemitha yeph
I-pH ichazwa njenge-logarithm engalunganga yoxinaniso lwe-hydrogen ion kwisisombululo samanzi. Nangona oku kuvakala kunzima, ngokwemigaqo elula kakhulu, i-pH linani elisetyenziselwa ukulinganisa i-acidity okanye i-alkalinity yesisombululo. Inani libonisa inani le-hydrogen ion ezinokukhutshwa yinto ethile kwisisombululo. Kuluhlu lwe-pH, i-pH ye-7 ithathwa njengengathathi hlangothi. Izisombululo ezine-pH ye-0-7 zibhekwa njenge-acidic, kwaye izisombululo ezingaphezulu kwe-7 ukuya kwe-14 zibizwa ngokuba yi-alkaline solutions. Kwiinkqubo zebhayoloji, i-pH ibalulekile. Ngombulelo kwi-pH elungiswe ngononophelo, ininzi ye-biomolecules emzimbeni wethu inokwenza imisebenzi emihle kakhulu. Nakwinkqubo yovavanyo, i-pH efunekayo kufuneka igcinwe ukuze kufunyanwe iziphumo ezichanekileyo. Ngoko ke, kuvavanyo lwebhayoloji, isixhobo esibizwa ngokuba yi-pH meter sisetyenziselwa ukujonga ngononophelo i-pH.
Imitha ye-pH yi-electrode ephendulayo ye-pH elinganisa umsebenzi we-hydrogen ion kwisisombululo kwaye idlulisa olu lwazi. Isixhobo siqukethe iibhubhu ezimbini zeglasi, nganye kuzo iqulethe i-electrode, i-electrode yereferensi kunye ne-sensor electrode. I-electrode yereferensi yenziwe ngesisombululo se-KCl ehluthayo, ngelixa i-electrode ye-sensor iqulethe isisombululo se-buffer kunye ne-pH ye-7, kunye nocingo lwesilivere olufakwe nge-chloride yesilivere luntywiliselwa kwezi zisombululo zimbini. Ekupheleni kwe-electrode ye-sensor i-bulb eyenziwe ngeglasi ye-porous ehlanganiswe ne-silica kunye netyuwa yensimbi.
Ukulinganisa i-pH yesisombululo, imitha ye-pH ifakwe kwisisombululo. Emva kokuba ibhalbhu ye-sensor electrode iqhagamshelana nesisombululo, ii-ion ze-hydrogen kwisisombululo ziya kuthatha indawo ye-ion zetsimbi kwibhalbhu. Oku kutshintshwa kwee-ion zetsimbi kubangela ukuhamba kwangoku kwintambo yensimbi, efundwa yi-voltmeter.
Imitha ye-pH sesona sixhobo sisetyenziswa kakhulu kwiilabhoratri zebhayoloji. Hlalutya rhoqo i-pH yezithinteli, izisombululo kunye nee-reagents ukuqinisekisa ukuba iimeko zovavanyo zichanekile. Ukuqinisekisa ufundo oluchanekileyo, izixhobo kufuneka zilinganiswe rhoqo.
Ukusetyenziswa kwesixhobo semitha ye-PH
Ukusetyenziswa kwesixhobo sokujonga imitha ye-PH kwinkqubo yokucoca ugutyulo lwasekhaya
Ukusetyenziswa kwemitha ye-pH kunyango lwe-electroplating yamanzi amdaka
Ukusetyenziswa kwemitha ye-PH kwi-Intanethi kuShishino
Ulungelelwaniso lwe-PH imitha
Ixesha lokuposa: Dec-15-2021