Njengososayensi waselabhorethri, elinye lamathuluzi abaluleke kakhulu ozowadinga imitha ye-pH. Lolu cingo lubalulekile ekuqinisekiseni ukuthi uthola imiphumela enembile yokuhlaziywa kwamakhemikhali. Kulesi sihloko, sizoxoxa ngokuthi iyini imitha ye-pH, ukuthi isebenza kanjani, nokubaluleka kwayo ekuhlaziyweni kwaselabhorethri.
Iyini i-pH Meter?
Imitha ye-pH iyisisetshenziswa sikagesi esisetshenziswa ukukala i-pH (i-acidity noma i-alkalinity) yesisombululo. Ine-probe efakwe esixazululweni esihlolwayo, futhi idivayisi ikala amandla kagesi phakathi kwe-probe kanye ne-electrode eyireferensi. Leli khono libe seliguqulwa libe ukufundwa kwe-pH.
Isebenza Kanjani Imitha ye-pH?
Imitha ye-pH isebenza ngokusekelwe kumgomo we-electrochemistry. I-probe iqukethe i-electrode yengilazi, okuwulwelwesi lwengilazi oluncane, oluzwelayo oluphendula izinguquko ku-acidity noma i-alkalinity yesisombululo. Ulwelwesi lumbozwe ngento ekhethekile eyenza amandla kagesi lapho evezwe kusixazululo esine-acidic noma esiyisisekelo. I-electrode yereferensi, ngakolunye uhlangothi, inikeza amandla kagesi azinzile asetshenziswa njengesiqhathaniso namandla akhiqizwa i-electrode yengilazi. Umehluko emandleni kagesi phakathi kwama-electrode amabili ube usulinganiswa imitha ye-pH, bese kubalwa ukufundwa kwe-pH.
Ukubaluleka Kwemitha ye-pH Ekuhlaziyweni Kwelabhorethri
Imitha ye-pH iyithuluzi elibalulekile ekuhlaziyweni kwaselabhorethri, futhi isetshenziswa ezinhlotsheni ezahlukahlukene, kubandakanya:
1. Ukuhlolwa Kwemvelo
Ekuhlolweni kwemvelo, amamitha e-pH asetshenziselwa ukukala i-pH yenhlabathi, amanzi, nomoya. Lolu lwazi lubalulekile ekuhloleni izinga lendawo ezungezile kanye nokuhlonza imithombo engase ibe khona yokungcola.
2. Ukuhlola Ukudla Nesiphuzo
Embonini yokudla neziphuzo, amamitha e-pH asetshenziselwa ukuqapha i-acidity noma i-alkalinity yemikhiqizo ehlukahlukene. Lolu lwazi lubalulekile ekuqinisekiseni ukuthi umkhiqizo uphephile ukusetshenziswa futhi uhlangabezana nezidingo zokulawula.
3. Ukuhlaziywa Kwemithi
Ekuhlaziyweni kwemithi, amamitha e-pH asetshenziselwa ukukala i-pH yokwakhiwa kwezidakamizwa. Lolu lwazi lubalulekile ekuqinisekiseni ukuthi umuthi uzinzile futhi uyasebenza.
4. Ukuhlaziywa Kwamakhemikhali
Ekuhlaziyeni amakhemikhali,pH metresasetshenziselwa ukukala i-pH yezixazululo, okuhlanganisa ama-asidi nezisekelo. Lolu lwazi lubalulekile ekunqumeni ukugxila kwesixazululo kanye nokuhlonza noma yikuphi ukusabela okungenzeka okungenzeka.
Izinhlobo zamamitha we-pH
Kunezinhlobo ezimbili eziyinhloko zamamitha we-pH: i-analog nedijithali.
Analog pH Amamitha
Amamitha e-pH analogi wuhlobo lwendabuko lwemitha ye-pH, futhi asebenzisa inaliti nesikali ukubonisa ukufundwa kwe-pH. Lawa mamitha awabizi kakhulu kunamamitha edijithali, kodwa anembe kancane futhi anembayo kancane.
Digital pH Amamitha
Amamitha e-pH edijithali awuhlobo lwesimanje lwemitha ye-pH, futhi asebenzisa isikrini se-LCD ukuze abonise ukufundwa kwe-pH. Lawa mamitha anembe kakhulu futhi anembe kakhulu kunamamitha e-analog, kodwa ayabiza kakhulu.
I-pH Meter Calibration
Ukulinganisa kuyisinyathelo esibalulekile sokuqinisekisa ukuthi imitha ye-pH inikeza ukufundwa okunembile nokunembayo. Ukulinganisa kuhilela ukulungisa imitha ukuze ifane ne-pH yesisombululo esijwayelekile esaziwayo. Ukuze ulinganise imitha ye-pH, uzodinga isethi yezixazululo ezijwayelekile ezinamavelu e-pH aziwayo. Lezi zixazululo kufanele zihlanganise ububanzi bamanani e-pH ozobe uwahlola. Imitha ye-pH iqala ilinganiswe ibe yisisombululo esijwayelekile esine-acidic kakhulu noma esiyisisekelo, bese ilinganiswa nezixazululo ezisele ukuze kunyuke i-pH.
Ukugcinwa kwamamitha we-pH
Ukugcinwa kahle kwemitha ye-pH kubalulekile ekuqinisekiseni ukuthi inikeza ukufundwa okunembile nokunembayo. Amanye amathiphu okugcina imitha ye-pH afaka:
- Ukuhlanza njalo i-probe nama-electrode
- Ukugcina imitha ye-pH endaweni eyomile nepholile
- Ukulinganisa imitha njalo
- Ukushintsha i-probe nama-electrode njengoba kudingeka
Isikhathi sokuthumela: May-06-2023