Tlhaloso ea ph meter
PH meter e bolela sesebelisoa se sebelisetsoang ho fumana boleng ba pH ba tharollo.Methara ea pH e sebetsa ho latela molao-motheo oa betri ea galvanic.Matla a electromotive pakeng tsa li-electrode tse peli tsa betri ea galvanic e itšetlehile ka molao oa Nerns, o sa amaneng feela le thepa ea li-electrode, empa hape e amana le mahloriso a li-ion tsa hydrogen ka tharollo.Ho na le kamano e tsamaellanang pakeng tsa matla a electromotive a betri ea mantlha le hydrogen ion concentration, 'me logarithm e mpe ea motsoako oa hydrogen ion ke pH ea boleng.Methara ea pH ke sesebelisoa se tloaelehileng sa tlhahlobo, se sebelisoang haholo temong, ts'ireletsong ea tikoloho le indastering.pH ya mobu ke e nngwe ya dintho tsa bohlokwa tsa motheo tsa mobu.Lintlha tse kang mocheso le matla a ionic a tharollo e lokelang ho lekoa li lokela ho nkoa nakong ea tekanyo ea pH.
Molao-motheo oa ph meter
pH e hlalosoa e le logarithm e mpe ea motsoako oa hydrogen ion tharollong e nang le metsi.Leha sena se utloahala se rarahane, ka mantsoe a bonolo haholo, pH ke palo e sebelisetsoang ho lekanya acidity kapa alkalinity ea tharollo.Nomoro e bontša palo ea li-ion tsa hydrogen tseo ntho e itseng e ka li ntšang ka tharollo.Boemong ba pH, pH ea 7 e nkoa e sa nke lehlakore.Litharollo tse nang le pH ea 0-7 li nkoa li le asiti, 'me litharollo tse ka holimo ho 7 ho isa ho 14 li bitsoa litharollo tsa alkaline.Litsamaisong tsa baeloji, pH e bohlokoa.Ka lebaka la pH e hlophisitsoeng ka hloko, boholo ba limolek'hule tsa 'mele ea rona li ka etsa mesebetsi e metle haholo.Le tsamaisong ea liteko, pH e hlokahalang e tlameha ho bolokoa ho fumana liphetho tse nepahetseng.Ka hona, litekong tsa baeloji, sesebelisoa se bitsoang pH meter se sebelisoa ho lekola pH ka hloko.
Methara ea pH ke electrode e arabelang pH e lekanyang mosebetsi oa li-ion tsa haedrojene ka tharollo le ho fetisa boitsebiso bona.Sesebelisoa se na le li-tubes tse peli tsa khalase, e 'ngoe le e' ngoe e na le electrode, electrode ea reference le electrode ea sensor.Electrode ea litšupiso e entsoe ka tharollo ea KCl e tletseng, ha electrode ea sensor e na le tharollo ea buffer e nang le pH ea 7, 'me terata ea silevera e koahetsoeng ka chloride ea silevera e qoelisoa litharollong tsena tse peli.Qetellong ea electrode ea sensor ke tleloubu e entsoeng ka khalase ea porous e koahetsoeng ka silika le letsoai la tšepe.
Ho metha pH ea tharollo, pH meter e qoelisoa ka har'a tharollo.Ka mor'a hore tleloubu ea electrode ea sensor e kopane le tharollo, li-ion tsa hydrogen tse ka har'a tharollo li tla nkela li-ion tsa tšepe sebaka sa tleloubu.Ho nkela sebaka sena sa li-ion tsa tšepe ho etsa hore hona joale ho phalle ka terata ea tšepe, e baloang ke voltmeter.
Mmitha ea pH ke e 'ngoe ea lisebelisoa tse sebelisoang haholo lilaboratoring tsa baeloji.Hlahloba pH ea li-buffers, litharollo le li-reagents khafetsa ho netefatsa hore maemo a liteko a nepahetse.Ho netefatsa ho bala ho nepahetseng, lisebelisoa li tlameha ho lekanyetsoa khafetsa.
Tšebeliso ea PH meter detector
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Nako ea poso: Dec-15-2021