Kev paub me me thiab kev paub loj 丨Tag nrho cov phosphorus txheem qauv teeb tsa cov lus qhia

Kev teeb tsa cov qauv qauv yog ib yam uas yuav tsum tau ua ntau zaus thaum lub sijhawm sim. Piv txwv li, piv txwv li, kev teeb tsa cov qauv qauv, los ntawm kev sib piv cov nqi ntsuas nrog tus nqi siv ntawm cov qauv qauv, ib tus tuaj yeem txiav txim siab seb qhov yuam kev ntawm cov cuab yeej sim puas nyob hauv qhov ntau thiab tsawg uas tau teev tseg, thiab lwm tus tuaj yeem txheeb xyuas seb txoj kev ntsuas ntawm tus neeg sim puas yog. Yog li ntawd, kev teeb tsa cov qauv qauv yog qhov tseem ceeb heev rau kev ntseeg siab ntawm kev sim.
Cov hauv qab no yuav qhia txog cov txheej txheem teeb tsa ntawm cov qauv phosphorus tag nrho, tuaj saib.
Kauj ruam thawj zaug yog npaj Lianhua Technology cov khoom siv tshwj xeeb rau tag nrho cov phosphorus-potassium dihydrogen phosphate (KH2PO4), dej distilled, beaker, stirring pas nrig, thiab 1000mL volumetric flask ua ntej teeb tsa.
Kauj ruam thib ob yog siv me ntsis potassium dihydrogen phosphate (KH2PO4) los ziab rau ntawm 110 ℃ li 2 teev, thiab muab rho tawm tom qab txias lawm.
Kauj ruam thib peb yog ntsuas 0.2197 g ntawm cov potassium dihydrogen phosphate (KH2PO4) qhuav kom raug thiab muab tso rau hauv lub beaker, ntxiv li 100 ml ntawm dej distilled, do kom txog thaum yaj tag, tom qab ntawd ntxiv 5 mL ntawm analytical grade sulfuric acid, thiab tom qab ntawd muab tso rau hauv lub raj mis volumetric (lub beaker tuaj yeem yaug peb zaug nrog dej distilled, thiab cov tshuaj yaug kuj tseem ntxiv rau hauv lub raj mis volumetric), thiab thaum kawg dilute rau 1000 mL.
Tam sim no, cov qauv phosphorus tag nrho 50 mg/L tau npaj tiav lawm. Cov qauv txheem uas tau npaj tseg tuaj yeem siv los kuaj thiab kho cov cuab yeej, thiab lub sijhawm khaws cia feem ntau yog 6 lub hlis.
Qhov saum toj no yog txoj kev teeb tsa ntawm cov qauv phosphorus tag nrho hauv qhov teeb meem no. Ua raws li kuv kom paub ntau ntxiv txog kev sim!