Incazelo yemitha elingu-ph
Imitha ye-pH isho ithuluzi elisetshenziselwa ukunquma inani le-pH lesixazululo. Imitha ye-pH isebenza ngomgomo webhethri le-galvanic. Amandla e-electromotive phakathi kwama-electrode amabili ebhethri ye-galvanic asekelwe emthethweni we-Nerns, ongahlobene kuphela nezakhiwo zama-electrode, kodwa futhi ahlobene nokuhlushwa kwama-ion e-hydrogen esixazululweni. Kunobudlelwano obuhambisanayo phakathi kwamandla e-electromotive ebhethri eliyinhloko kanye nokugxiliswa kwe-ion ye-hydrogen, futhi i-logarithm eyinegethivu yokugxiliswa kwe-ion ye-hydrogen yinani le-pH. Imitha ye-pH iyithuluzi elivamile lokuhlaziya, elisetshenziswa kakhulu kwezolimo, ukuvikelwa kwemvelo kanye nezimboni. I-pH yomhlabathi ingenye yezinto ezibalulekile eziyisisekelo zomhlabathi. Izinto ezifana nezinga lokushisa namandla e-ionic esixazululo okufanele sihlolwe kufanele zicatshangelwe ngesikhathi sokukalwa kwe-pH.
Umgomo we-ph mitha
I-pH ichazwa njenge-logarithm engeyinhle yokugxiliswa kwe-hydrogen ion kusixazululo esinamanzi. Nakuba lokhu kuzwakala kuyinkimbinkimbi, ngamagama alula kakhulu, i-pH iyinombolo esetshenziselwa ukulinganisa i-acidity noma i-alkalinity yesisombululo. Inombolo ikhombisa inani lama-ion e-hydrogen into ethile engakwazi ukuyikhipha esixazululweni. Ebangeni le-pH, i-pH engu-7 ibhekwa njengengathathi hlangothi. Izixazululo ezine-pH ka-0-7 zibhekwa njenge-acidic, futhi izixazululo ezingaphezu kuka-7 kuya ku-14 zibizwa ngokuthi izixazululo ze-alkaline. Ezinhlelweni zebhayoloji, i-pH ibalulekile. Ngenxa ye-pH elungiswe ngokucophelela, iningi lama-biomolecules emzimbeni wethu lingenza imisebenzi emihle kakhulu. Ngisho nasohlelweni lokuhlola, i-pH edingekayo kufanele igcinwe ukuze kutholwe imiphumela enembile. Ngakho-ke, ekuhlolweni kwebhayoloji, idivayisi ebizwa ngokuthi imitha ye-pH isetshenziswa ukuqapha ngokucophelela i-pH.
Imitha ye-pH iyi-electrode esabelayo nge-pH ekala umsebenzi wama-ion e-hydrogen esixazululweni bese idlulisela lolu lwazi. Idivayisi iqukethe amashubhu amabili engilazi, ngalinye eliqukethe i-electrode, i-electrode eyireferensi kanye ne-sensor electrode. I-electrode eyireferensi yenziwe ngesixazululo se-KCl esigcwele, kuyilapho i-electrode yenzwa iqukethe isisombululo se-buffer esine-pH engu-7, futhi ucingo olusiliva olunamekwe nge-chloride esiliva lucwiliswa kulezi zixazululo ezimbili. Ekupheleni kwe-electrode yenzwa i-bulb eyenziwe ngengilazi e-porous eboshwe nge-silica nosawoti wensimbi.
Ukukala i-pH yesisombululo, imitha ye-pH icwiliswa esixazululweni. Ngemva kokuba isibani se-electrode yenzwa sithintana nesisombululo, ama-ion e-hydrogen asesixazululweni azothatha indawo yama-ion ensimbi ku-bulb. Lokhu kufakwa esikhundleni kwama-ion ensimbi kubangela ukugeleza kwamanje ocingweni lwensimbi, olufundwa nge-voltmeter.
Imitha ye-pH ingenye yezinto ezisetshenziswa kakhulu kumalabhorethri ezinto eziphilayo. Hlaziya njalo i-pH yamabhafa, izixazululo nama-reagents ukuze uqinisekise ukuthi izimo zokuhlola zilungile. Ukuqinisekisa ukufundwa okunembile, okokusebenza kufanele kukalwe njalo.
Ukusetshenziswa komtshina wamamitha we-PH
Ukusetshenziswa komtshina wemitha ye-PH enqubweni yokuhlanza indle yasekhaya
Ukusetshenziswa kwemitha ye-pH ekwelashweni kwamanzi angcolile nge-electroplating
Ukusetshenziswa kwe-Online PH Meter embonini
Ukulinganiswa kwemitha engu-PH
Isikhathi sokuthumela: Dec-15-2021