Indlela yokuthola i-Ca2+:
Amathuluzi okuhlola kanye nama-reagent: ama-beakers; i-conical flask; i-Funnel; i-Burette; i-Electric furnace; i-Anhydrous ethanol; i-Hydrochloric acid, isixazululo se-NH3-NH4Cl buffer, i-calcium indicator, isixazululo esijwayelekile esingu-0.02mol/LEDTA.
Izinyathelo zokuhlola:
1. Kala ngokunembile inani elithile lesampula yosizo lokucubungula i-ACR (elinembile kufika ku-0.0001g) bese ulibeka ebhodleleni. Limanzise nge-ethanol engamanzi, bese ufaka i-hydrochloric acid engu-1:1 bese uyishisa esithandweni sikagesi ukuze uvumele ama-ion e-calcium ukuthi asabele ngokugcwele ne-hydrochloric acid;
2. Geza ngamanzi bese uhlunga nge-funnel ukuze uthole uketshezi olucacile;
3. Lungisa inani le-pH libe ngaphezu kuka-12 usebenzisa isisombululo se-buffer se-NH3-NH4Cl, engeza inani elifanele le-calcium indicator, bese ufaka i-titrate ngesisombululo esijwayelekile esingu-0.02mol/LEDTA. Isiphetho yilapho umbala ushintsha kusuka kubomvu onsomi uye kuluhlaza okwesibhakabhaka okumsulwa;
4. Yenza isivivinyo esingenalutho ngasikhathi sinye;
5. Bala u-C # a2+=0.02 $(V-V0) $0.04004M $%&&
V - Umthamo wesisombululo se-EDTA esisetshenziswayo lapho kuhlolwa amasampula osizo lokucubungula i-ACR (mL).
V # - Umthamo wesisombululo esisetshenzisiwe ngesikhathi sokuhlolwa okungenalutho
M — Kala isisindo sesampula yosizo lokucubungula i-ACR (g).
Indlela yokushisa yokulinganisa izinto ezingaphili:
Amathuluzi okuhlola: ibhalansi yokuhlaziya, isithando somlilo esithambile.
Izinyathelo zokuhlola: Thatha amasampula osizo lokucubungula i-ACR angu-0.5,1.0g (anembile ku-0.001g), uwabeke esithandweni sokushisa esingaguquki esingu-950 bese ushisa ihora eli-1, bese upholisa bese ukala ukuze ubale okusele okushisiwe. Uma izinto ezingaphili zengezwa kusampula yezinsiza zokucubungula i-ACR, kuzoba nezinsalela ezengeziwe.
Indlela yokuncibilikisa:
1. Izinsimbi zokuhlola kanye nebhalansi yokuhlaziya i-reagent; i-flask yevolumu engu-25mL; i-Trichloromethane.
Isinyathelo 2: Ngokwendlela yokuhlola i-ACR intrinsic viscosity, kala u-75mg wesampula bese uyibeka ebhodleleni elingu-25mL. Faka i-trichloromethane solvent. Uma kukhona ukuthuthumela noma ukukhanya okubonakalayo
Isikhathi sokuthunyelwe: Meyi-27-2024
