I-PH imele 'amandla we-hydrogen' futhi iyisilinganiso sesilinganiso se-hydrogen ions (H +) ne-hydroxyl ions (OH-), ngamanye amagama, inani le-pH yenhlabathi liyisilinganiso sokuhlungwa kwama-ion agcinwe izinhlayiya zenhlabathi futhi izinto eziphilayo.
Isilinganiso se-pH sisuka ku-0 siye ku-14, sine- i-pH 7 hlangothi. Ukufundwa okungaphansi kuka-7.0 kukhombisa ukuthi inhlabathi "ine-asidi" kanti ukufundwa okungaphezulu kuka-7.0 kukhombisa izimo zenhlabathi "ezinama-alkaline".
Kungani i-pH ibalulekile?
Izitshalo eziningi zingabekezelela uhla olubanzi lwe-pH kusiko lesixazululo, kepha alikwazi ukubekezelela u-asidi omningi enhlabathini.
Lapho i-asidi yenhlabathi iguquka, ukuncibilika kwe-ion yensimbi ehlukahlukene nakho kuyashintsha. Ukukhula kwezitshalo kuthinteka ngempela ngokuxubana okuguqukayo kwalezi zinsimbi kusisombululo, kunokuba kube yi-asidi uqobo.
I-pH yenhlabathi ibalulekile, ngoba inomthelela ezintweni eziningana zenhlabathi ezithinta ukukhula kwezitshalo.
Lezi yilezi:
Amagciwane omhlabathi
Umsebenzi webhaktheriya okhipha i-nitrogen ezintweni eziphilayo kanye nomanyolo othize uthinteka kakhulu yi-pH yenhlabathi, ngoba amabhaktheriya asebenza kangcono ebangeni le-pH lika-5.5 kuye ku-7.0.
Ukuvuza okunomsoco
Izitshalo zokutshala zivuza emhlabathini nge-pH engaphansi kuka-5.0 ngokushesha okukhulu kunenhlabathi enamanani aphakathi kuka-5.0 no-7.5.
Ukutholakala komsoco
Izakhamzimba zezitshalo ngokuvamile zitholakala kakhulu ezitshalweni ezisebangeni le-pH lika-5.5 kuye ku-6.5.
Izakhi ezinobuthi
I-Aluminium ingaba nobuthi ukutshala ukukhula enhlabathini ethile ene-pH engaphansi kuka-5.0.
Isakhiwo senhlabathi
Isakhiwo senhlabathi, ikakhulukazi ubumba, sithinteka yi-pH. Ebangeni elilungile le-pH (5.5 kuye ku-7.0), inhlabathi yobumba iyimbudumbudu futhi kulula ukuyisebenzaNgenkathi umhlabathi i-pH ine-esidi ngokweqile noma i-alkaline ngokweqile, ubumba luvame ukuba lunamathele futhi kube nzima ukukhula.
Ukuhlolwa kwe-pH yenhlabathi kuzokhombisa ukuthi ngabe inhlabathi yakho izokhiqiza ukukhula okuhle kwezitshalo noma ukuthi izodinga yini ukwelashwa ukulungisa izinga le-pH. Ezitshalweni eziningi, ububanzi be-pH obulungile bungu-5.5 kuye ku-7.0, kepha kwezinye izimo, izitshalo ezithile zizokhula enhlabathini ene-esidi eningi noma zidinge izinga le-alkaline elengeziwe.
Ukuhlolwa kwe-pH yenhlabathi
I-pH yenhlabathi ingalingani ngenxa yezizathu ezahlukahlukene, njenge Ukuqhubeka nokusetshenziswa komanyolo wezinto ezingaphili kuzokwenza inhlabathi ibe ne-esidi kakhulu.
Amakhithi wokuhlola inhlabathi ayatholakala ezitolo eziningi ezingadini, afaka amashubhu okuhlola kanye nekhambi lamakhemikhali lokuxubana nenhlabathi. Indlela elula ukusebenzisa inzwa ye-pH.
Ngoba inhlabathi icinileIzinzwa ezihamba phambili zinengilazi emise okomkhonto, evumela abasebenzisi ukuthi babhoboze indawo engaphansi komhlaba ngaphandle kokwephula uphenyo.
Enye indlela yokukala i-pH ukukhipha i-chemistry emhlabathini kusixazululo samanzi. Uxuba inhlabathi ngamanzi ngesilinganiso esingu-1: 1, ukuvumela ukulinganiswa kwesampula ketshezi usebenzisa i-pH electrode ejwayelekile.
Lungisa i-pH yenhlabathi
Inhlabathi ene-asidi iguqulwa nge-lime: ukukhulisa i-pH yenhlabathi nokwenza ubumnandi noma wenze i-alkaline yenhlabathi. Bheka imiphumela yokuhlolwa kwenhlabathi yakho ukuthola ukuthi udinga i-calcite noma i-dolomitic lime.
I-calcite calcite
Ikhishwe ku- idiphozi yemvelo yemvelo futhi kuyagaywa noma kugaywe kube yimpuphu ecolekileyo. Kubizwa nangokuthi i-lime yezolimo.
Umcako we-Dolomitic
Itholakala ngendlela efanayo, kepha ivela emithonjeni ye-limestone equkethe i-calcium ne-magnesium.
Uma udinga ukwehlisa i-pH yenhlabathi ene-alkaline ebangeni le-asidi, ushintsho ku-elemental sulphur noma i-aluminium sulfate.
Isibabule sokuqala
Isetshenziswa engadini, futhi ekugcineni ixhunywe ngamagciwane asenhlabathini. Kuthatha izinyanga ezimbalwa ukulungisa i-pH.
I-Aluminium sulfate: ikhiqiza ushintsho olusheshayo enhlabathini pH.