Configure raws li cov txheej txheem ntawm kev daws proportioning, thiab txuas cov tshuaj nrog cov kav dej.
(Anhydrous ethanol, gas cylinders, neutralization tov, thiab extraction tov yog tsim nyog rau kev sim.)
Tom qab pib, cov kua rho tawm rov qab, thiab tom qab ntawd muab lub khob tshuaj tiv thaiv, poob li 20 tee ntawm cov tshuaj neutralization (hauv lub raj mis), thiab tom qab ntawd nkag mus rau lub ntsiab interface.
(BTB aqueous tov thiab standard acid tsuas yog siv rau calibration thiab xyuas)
Calibration yog xav tau thaum lub ntsuas tsis raug thiab tsis siv rau lwm lub sijhawm.
Stirrers yuav tsum tau muab tso rau hauv lub khob qauv. Tsuas yog kev kuaj xyuas tus kheej, lawv yuav tsum tau muab tso rau lwm lub sijhawm.
Kev ntsuas ntsuas ntsuas: Muab 20ml ntawm BTB aqueous tov rau hauv lub khob tshuaj tiv thaiv thiab ua titration dawb paug. Tom qab ua tiav, noj 100 microliters ntawm 0.15mol / L txheem kua qaub kua
【Chemical formula ntawm poov tshuaj hydrogen phthalate (HOOCC6H4COOK, C8H5KO4)】
ntxiv lub khob tshuaj tiv thaiv thiab txuas ntxiv cov calibration. Tus naj npawb ntawm neutralized droplets yog tso tawm. (Tib khob, tsis tas yuav hloov)
Kev txheeb xyuas cov cuab yeej: Muab 20 ml ntawm BTB aqueous tov rau hauv lub khob tshuaj tiv thaiv thiab ua titration dawb paug. tom qab kawg,
Siv cov tshuaj kua qaub (lub ntim yog xaiv tau) thiab ntxiv rau lub khob tshuaj tiv thaiv, thiab txuas ntxiv qhov ntsuas. Qhov tseeb thiab theoretical qhov tseem ceeb tau tshwm sim thaum kawg. (Tib khob, tsis tas yuav hloov)
Qauv txiav txim:
1. Lub ntsuas ntsuas ua qhov ntsuas tus kheej ua ntej kom pom tias yuav tsum tau ntxiv cov tshuaj extraction. Yog tias tsis tsim nyog, nws tuaj yeem raug kuaj ncaj qha. Yog hais tias ib tug extraction tov yog ntxiv, ib tug dawb paug titration ntawm cov extraction tov yog yuav tsum tau. Muab ib lub khob coj los ua ib qho titration dawb paug. Koj yuav tau txais kev tshoov siab kom hloov lub khob huv nrog ib qho titration dawb paug. Noj 20 ml ntawm cov tshuaj extraction, ua ib tug dawb paug titration ntawm cov extraction tov thiab ces cia li txuag tus naj npawb ntawm tee.
2. Rau kev txiav txim siab coj mus kuaj, muab 10ml coj lub khob thiab cov roj coj mus kuaj ua ntej, qhov ntsuas yuav muab cov tshuaj rho tawm, thiab tom qab ntawd tso cov tshuaj neutralization kom tiav qhov kev xeem.