Njengesazinzulu selabhoratri, esinye sezona zixhobo zibalulekileyo oya kuzifuna yimitha ye-pH. Esi sixhobo sibalulekile ekuqinisekiseni ukuba ufumana iziphumo ezichanekileyo zohlalutyo lweekhemikhali. Kweli nqaku, siza kuxubusha ukuba yintoni imitha ye-pH, isebenza njani, kunye nokubaluleka kwayo kuhlalutyo lwebhubhoratri.
Yintoni i-pH Meter?
Imitha ye-pH sisixhobo sombane esisetyenziselwa ukulinganisa i-pH (i-asidi okanye i-alkalinity) yesisombululo. Ine-probe efakwe kwisisombululo esivavanywayo, kwaye isixhobo silinganisa amandla ombane phakathi kweprobe kunye ne-electrode yereferensi. Oku nokwenzeka kuthi kuguqulwe kufundo lwe-pH.
Isebenza Njani Imitha ye-pH?
Imitha ye-pH isebenza ngokusekelwe kumgaqo we-electrochemistry. I-probe iqulethe i-electrode yeglasi, eyi-membrane yeglasi encinci, ebuthathaka esabela kwiinguqu ze-asidi okanye i-alkalinity yesisombululo. I-membrane ifakwe kwizinto ezikhethekileyo ezivelisa amandla ombane xa zibonakaliswe kwisisombululo esinomuncu okanye esisisiseko. I-electrode yereferensi, ngakolunye uhlangothi, inika amandla ombane azinzileyo asetyenziswa njengokuthelekisa amandla awenziwe yi-electrode yeglasi. Umahluko kumandla ombane phakathi kwee-electrode ezimbini emva koko ulinganiswa ngemitha ye-pH, kwaye ufundo lwe-pH luyabalwa.
Ukubaluleka koMmitha we-pH kuHlahlelo lweLabhoratri
Imitha ye-pH sisixhobo esibalulekileyo kuhlalutyo lwelabhoratri, kwaye isetyenziswa kwizicelo ezahlukeneyo, kubandakanya:
1. Uvavanyo lokusingqongileyo
Kuvavanyo lokusingqongileyo, iimitha ze-pH zisetyenziselwa ukulinganisa i-pH yomhlaba, amanzi kunye nomoya. Olu lwazi lubalulekile ekuhloleni umgangatho wokusingqongileyo nasekuchongeni imithombo enokubakho yongcoliseko.
2. Uvavanyo lokutya kunye nesiselo
Kwishishini lokutya kunye nesiselo, iimitha ze-pH zisetyenziselwa ukujonga ubumuncu okanye i-alkalinity yeemveliso ezahlukeneyo. Olu lwazi lubalulekile ekuqinisekiseni ukuba imveliso ikhuselekile ukuba ingasetyenziswa kwaye ihlangabezana neemfuno zolawulo.
3. Uhlalutyo lwezamayeza
Kuhlalutyo lwamachiza, iimitha ze-pH zisetyenziselwa ukulinganisa i-pH yokwenziwa kwamachiza. Olu lwazi lubalulekile ekuqinisekiseni ukuba ichiza lizinzile kwaye liyasebenza.
4. Uhlalutyo lweMichiza
Kuhlalutyo lweekhemikhali,Iimitha ze-pHzisetyenziselwa ukulinganisa i-pH yezisombululo, kuquka i-asidi kunye neziseko. Olu lwazi lubalulekile ekumiseleni ukugxininiswa kwesisombululo kunye nokuchonga nakuphi na ukusabela okunokuthi kwenzeke.
Iintlobo zeemitha ze-pH
Kukho iintlobo ezimbini eziphambili zeemitha ze-pH: i-analog kunye nedijithali.
Imitha ye-analog pH
Iimitha ze-analog pH luhlobo lwemveli lwemitha ye-pH, kwaye zisebenzisa inaliti kunye nesikali ukubonisa ukufundwa kwe-pH. Ezi mitha zibiza ngaphantsi kuneemitha zedijithali, kodwa azichanekanga kwaye azichanekanga kangako.
Digital pH Imitha
Iimitha zedijithali ze-pH luhlobo lwangoku lwemitha ye-pH, kwaye zisebenzisa isikrini se-LCD ukubonisa ukufundwa kwe-pH. Ezi mitha zichanekile kwaye zichanekile kuneemitha ze-analog, kodwa zibiza kakhulu.
Ulungelelwaniso lwemitha ye-pH
Ulungelelwaniso linyathelo elibalulekileyo ekuqinisekiseni ukuba imitha ye-pH ibonelela ngofundo oluchanekileyo noluchanekileyo. Ukulinganisa kubandakanya ukulungelelanisa imitha ukuze ihambelane ne-pH yesisombululo esisemgangathweni esaziwayo. Ukulinganisa imitha ye-pH, uya kudinga iseti yezisombululo ezisemgangathweni ezinexabiso le-pH elaziwayo. Ezi zisombululo kufuneka zigubungele uluhlu lwamaxabiso e-pH oza kuwavavanya. Imitha ye-pH iqala ilungelelaniswe kwisisombululo esisezantsi esineasidi okanye esisiseko, ize emva koko ilinganiswe kwizisombululo ezishiyekileyo ngokokulandelelana kwe-pH.
Ukugcinwa kweemitha ze-pH
Ukugcinwa ngendlela eyiyo kwemitha ye-pH kubalulekile ekuqinisekiseni ukuba ibonelela ngofundo oluchanekileyo noluchanekileyo. Ezinye iingcebiso zokugcina imitha ye-pH ziquka:
- Ukucocwa rhoqo kweprobe kunye ne-electrodes
- Ukugcina imitha ye-pH kwindawo eyomileyo nepholileyo
- Ukulinganisa imitha rhoqo
- Ukutshintsha i-probe kunye ne-electrodes njengoko kufuneka
Ixesha lokuposa: May-06-2023