Video: Dppm xam li cas?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Concentration hauv ntu ib lab , los yog ppm ua , zoo ib yam li qhov hnyav feem pua, tshwj tsis yog koj muab qhov loj piv los ntawm 1, 000, 000 es tsis txhob 100. Qhov ntawd yog, ppm ua = (mass of solute ÷ mass of solution) x 1,000,000.
Ntawm no, ppm unit yog dab tsi?
Qhov no yog ib qho luv luv rau " ntu ib lab "thiab nws kuj tuaj yeem qhia tau tias yog milligrams ib liter (mg / L). chav tsev ntim dej. Pom ppm ua los yog mg/L ntawm ib daim ntawv qhia txog kev kuaj sim txhais tau tias tib yam.
Tus qauv ntawm PPM yog dab tsi? Concentration hauv ntu ib lab , los yog ppm ua , zoo li qhov hnyav feem pua, tshwj tsis yog koj muab qhov sib piv ntawm 1, 000, 000 es tsis txhob 100. Qhov ntawd yog, ppm ua = (mass of solute ÷ mass of solution) x 1,000,000.
Tib neeg kuj nug, koj yuav hloov ppm rau grams li cas?
PPM = ntu ib lab Ib txhiab ntawm a grams yog ib milligram thiab 1000 ml yog ib liter, yog li ntawd 1 ppm ua = 1 mg/liter = mg/litre. PPM yog muab los ntawm qhov tseeb tias qhov ntom ntawm cov dej yog npaum li 1kg / L = 1, 000, 000 mg / L, thiab 1mg / L yog 1mg / 1, 000, 000mg los yog ib feem ntawm ib lab.
Qhov qhab nia PPM zoo yog dab tsi?
A PPM qhov tsis xws luag ntawm 10, 000 txhais tau tias qhov tsis xws luag yog tsawg dua 1%. Txawm li cas los xij; nrog rau lub sijhawm dhau los, qhov kev cia siab tau nce mus rau 1,000 PPM thiab tam sim no, qhov kev cia siab PPM tus nqi, tshwj xeeb tshaj yog nyob rau hauv kev lag luam kev lag luam thoob plaws ntiaj teb, yog nyob ib ncig ntawm 75 PPM.
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