Zithini iiPocket PH Testers?
Abavavanyi be-pH epokothweni zizixhobo ezincinci eziphathwayo ezinika umsebenzisi ulwazi ngokuchanekileyo, ngokulula nangokufikeleleka. Ezi zixhobo zenzelwe ukusetyenziswa kwiimeko ezahlukeneyo kwaye ziya kuvavanya i-alkalinity (pH) kunye ne-asidi yeesampuli ezahlukeneyo. Zithandwa kakhulu xa kuvavanywa iisampulu zomgangatho wamanzi kuba zingena kakuhle epokothweni ukuze kube lula ukuzifumana nokuzisebenzisa.
Ngezicelo ezininzi ezahlukeneyo ezivelisa uluhlu lweendidi zeesampuli, kubalulekile ukwazi ukuba loluphi uhlobo lovavanyo lwamanzi lwe-pH oluza kuvelisa iziphumo ezilungileyo kwiimfuno zakho zovavanyo lwesampuli. Kukho iintlobo ngeentlobo zeesampuli ezikwimarike ezibonelela ngeentlobo ezahlukeneyo zobuchwepheshe ukwanelisa iimfuno zomthengi. Kukho iintlobo ezintathu zeesampuli zamanzi ze-pH ezifanelekileyo ukuvavanya umgangatho wamanzi: i-single-junction electrode disposable tester, i-single-junction replaceable electrode kunye ne-double-junction replaceable electrode. Ukukhetha i-pH meter yamanzi kuya kuxhomekeka kakhulu kwisampuli evavanywayo, i-cadence yovavanyo kunye nokuchaneka okufunekayo.
Amaxabiso e-pH
Uhlobo oluqhelekileyo lovavanyo lomgangatho wamanzi luvavanyo lwe-pH. I-pH yamanzi ibonisa ibhalansi phakathi kwee-ion ze-hydrogen, ezi-acidic, kunye nee-ion ze-hydroxide, ezisisiseko. Ibhalansi egqibeleleyo yezi zimbini ikwi-pH ye-7. Ixabiso le-pH ye-7 alikhethi. Njengoko inani lincipha, into ibekwa njenge-acidic engaphezulu; njengoko isanda, iba yi-alkaline engaphezulu. Amaxabiso aqala kwi-0 (i-acidic ngokupheleleyo, njenge-asidi yebhetri) ukuya kwi-14 (i-alkaline epheleleyo, umzekelo, isicoci sedreyini). Amanzi epompo adla ngokuba malunga ne-pH ye-7, ngelixa amanzi aqhelekileyo aqhele ukuba phakathi kweeyunithi ze-pH ezi-6 ukuya kwezi-8. Izicelo ezifuna ukulinganisa amanqanaba e-pH zifumaneka phantse kuyo yonke imboni kunye nekhaya. Ukusetyenziswa kwekhaya, njengokulinganisa amanqanaba e-pH ye-aquarium yentlanzi, kwahlukile ekulinganiseni amanqanaba e-pH yamanzi kwisityalo sonyango lwamanzi.
Ngaphambi kokuba ukhethe i-pocket tester, kubalulekile ukwazi okungakumbi nge-electrode. Yinxalenye ye-pocket tester efakwa kwisampulu ukuze kuthathwe umlinganiselo we-pH. Ngaphakathi kwi-electrode kukho i-electrolyte (ulwelo okanye ijeli). Indawo yokuhlangana kwe-electrode yindawo enemingxuma phakathi kwe-electrolyte kwi-electrode kunye nesampulu yakho. Ngokusisiseko, i-electrolyte kufuneka iphume kwisampulu ukuze i-electrode isebenze ukuze kufumaneke iziphumo ezichanekileyo. Zonke ezi ndawo zincinci zisebenza kunye ngaphakathi kwe-electrode ukuze kulinganiswe i-pH ngokuchanekileyo.
I-electrode yonakala kancinci kancinci kuba i-electrolyte isetyenziswa rhoqo xa kuthathwa imilinganiselo kwaye ityhefwa zii-ion okanye iikhompawundi ezingcolisayo. Ii-ion ezityhefa i-electrolyte ziimetal, ii-phosphates, ii-sulfates, ii-nitrates kunye neeproteni. Okukhona iyindawo enobungozi ngakumbi, kokukhona impembelelo enkulu kwi-electrode. Iindawo ezinobungozi ezinamazinga aphezulu ee-ion ezingcolisayo, njengeendawo zonyango lwamanzi amdaka, zinokukhawulezisa ukutyhefa kwe-electrolyte. Le nkqubo inokwenzeka ngokukhawuleza ngabavavanyi abaqalayo abangabizi kakhulu. Kwiiveki ezimbalwa, iimitha zinokuba zicotha kwaye zingaguquguquki. Imitha ye-pH esemgangathweni iya kuxhotyiswa nge-electrode ethembekileyo enika ukufundwa okuzinzileyo nokuchanekileyo rhoqo. Ukugcina i-electrode icocekile kwaye imanzi kubalulekile ekusebenzeni komvavanyi wepokotho kunye nobomi obude.
Abavavanyi be-pH abaLahlwayo abaNxulumeneyo olunye
Kubasebenzisi abavavanya i-pH ngamanye amaxesha abanesampulu ye-pH yesampuli yamanzi eqhelekileyo, iteknoloji elula esebenzisa i-electrode ye-single-junction iya kubonelela ngamandla amaninzi kunye nokuchaneka. I-electrode ye-single-junction inobomi obufutshane kune-electrode ye-double-junction kwaye idla ngokusetyenziselwa uvavanyo lwe-pH yendawo kunye nobushushu. I-sensor ye-single-junction engatshintshwayo ino-+0.1 pH accuracy. Olu lukhetho olungabizi kakhulu kwaye luhlala luthengwa ngumsebenzisi ongenazo izixhobo zobugcisa. Xa umvavanyi engasaboneleli ngokufundwa ngokuchanekileyo, yilahle nje uze uthenge enye i-pocket tester. Ii-single-junction disposable testers zihlala zisetyenziswa kwi-hydroponics, aquaculture, amanzi okusela, ii-aquariums, ichibi kunye nee-spas, imfundo, kunye neemarike zegadi.
Abavavanyi be-pH ye-Electrode eNguqulekayo yeSinye
Inyathelo elinyukayo ukusuka kwi-single-junction disposable tester yi-single-junction replaceable pocket tester, enokufikelela ukuchaneka okungcono kwe-+0.01 pH. Le tester ifanelekile kwiinkqubo ezininzi zovavanyo lwe-ASTM Intl. kunye ne-US EPA. I-sensor inokutshintshwa, igcina iyunithi, ukuze isetyenziswe ngokuphindaphindiweyo. Ukutshintsha i-sensor lukhetho kumsebenzisi oqhelekileyo osebenzisa i-tester rhoqo. Xa iyunithi isetyenziswa rhoqo kwaye iisampulu zinoxinzelelo olukhulu lwee-ions ezityhefa i-electrolyte kwi-electrode, kunokuba luncedo ngakumbi ukufudukela kwinqanaba elilandelayo labavavanyi ngetekhnoloji ye-double-junction electrodes.
Abavavanyi be-pH ye-Electrode eNguqulelwa kabini
Itekhnoloji yokudibanisa kabini inika indlela ende yokufuduka kwezinto ezingcolisayo, ibambezela umonakalo owonakalisayo kwi-electrode ye-pH, iphucula kwaye yandise ubomi beyunithi. Ngaphambi kokuba ungcoliseko lufikelele kwi-electrode, kufuneka lusasazeke kungekuphela nje kwi-junction enye, kodwa kwii-junction ezimbini. Abavavanyi be-dual-junction ngabavavanyi abanzima, abakumgangatho ophezulu abamelana neemeko ezinzima kunye neesampuli. Bangasetyenziswa namanzi amdaka, izisombululo ezine-sulfides, iintsimbi ezinzima kunye nee-Tris buffers. Kubathengi abafuna ukuphinda rhoqo uvavanyo lwabo lwe-pH, beveza ii-sensors kwizinto ezirhabaxa kakhulu, kubalulekile ukusebenzisa i-dual-junction tester ukwandisa ubomi be-electrode kwaye baqinisekise ukuchaneka, kwakhona. Ngokusetyenziswa ngakunye, ukufundwa kuya kushukuma kwaye kungathembeki kangako. Uyilo lwe-dual-junction luqinisekisa umgangatho ophezulu kwaye iteknoloji isetyenziselwa ukulinganisa amanqanaba e-pH ngokuchanekileyo okuphezulu kwe-+0.01 pH.
Ukulinganisa kubalulekile ukuze kuchaneke. Akuqhelekanga ukuba imitha ye-pH isuke kwiindawo ezilinganisiweyo. Nje ukuba ikwenze oko, iziphumo ezingachanekanga zinokwenzeka. Kubalulekile ukulinganisa abavavanyi ukuze kufunyanwe imilinganiselo echanekileyo. Ezinye iimitha ze-pH pocket zinokwaziwa ngokuzenzekelayo nge-buffer, nto leyo eyenza ukulinganisa kube lula kwaye kukhawuleze. Uninzi lweemodeli ezingabizi kakhulu zifuna ukulinganisa rhoqo ukuqinisekisa ukulinganisa okuchanekileyo. Ukulinganisa abavavanyi be-pH kufuneka kwenziwe rhoqo, kucetyiswa yonke imihla okanye ubuncinane kube kanye ngeveki. Lungisa ukuya kuthi ga kumanqaku amathathu usebenzisa imigangatho ye-buffer esetiweyo ye-US okanye ye-National Institute of Standards and Technology.
Abavavanyi beepokotho bebesoloko bethandwa kuvavanyo lwamanzi kwiminyaka embalwa edlulileyo, njengoko bebancinci, bephatheka, bechanekile kwaye banokuvelisa ukufundwa kwimizuzwana embalwa ngokucofa iqhosha. Njengoko imakethi yabavavanyi iqhubeka nokufuna inguqu, abavelisi bongeze izinto ezifana neendawo zokugcina amanzi kunye nothuli ukukhusela abavavanyi kwiindawo ezimanzi kunye nokuphathwa gwenxa. Ukongeza, izibonisi ezinkulu nezilungeleleneyo zenza ukufunda kube lula. Ukulungiswa kobushushu ngokuzenzekelayo, uphawu oluhlala lugcinelwe iimitha eziphathwayo kunye nezisezantsi, nalo longezwe kwiimodeli zamva nje. Ezinye iimodeli ziyakwazi ukulinganisa nokubonisa ubushushu bokwenyani. Abavavanyi abaphambili baya kuba nozinzo, ukulinganiswa kunye nezibonisi zebhetri kwisibonisi kwaye bazicime ngokuzenzekelayo ukuze balondoloze ubomi bebhetri. Ukukhetha umvavanyi weepokotho ofanelekileyo kwisicelo sakho kuya kukunika ukusetyenziswa okuthembekileyo nokuchanekileyo rhoqo.
Singakubonelela ngee-sensors zomgangatho wamanzi ezilinganisa ezinye iiparameter ezahlukeneyo zereferensi yakho.
Ixesha leposi: Novemba-12-2024