Mokhoa oa ho lemoha oa Ca2+:
Lisebelisoa tsa liteko le li-reagents: li-beakers; Botlolo ea conical; Funnel; Burette; Sebōpi sa motlakase; ethanol e se nang metsi; Hydrochloric acid, NH3-NH4Cl tharollo ea buffer, khalsiamo indicator, 0.02mol/LEDA tharollo e tloaelehileng.
Mehato ea teko:
1. Lekanya ka nepo palo e itseng ea sampuli ea thuso ea ho sebetsa ea ACR (e nepahetseng ho 0.0001g) 'me ue behe ka beaker. E nosetsa ka ethanol ea anhydrous, ebe u eketsa ho feta 1: 1 hydrochloric acid 'me ue chese ka sebōpi sa motlakase ho lumella li-ion tsa calcium hore li sebetsane ka botlalo le hydrochloric acid;
2. Hlatsoa ka metsi 'me u sefa ka funnel ho fumana mokelikeli oa eona o hlakileng;
3. Fetola boleng ba pH hore e be kholo ho feta 12 u sebelisa tharollo ea NH3-NH4Cl ea buffer, eketsa palo e loketseng ea khalsiamo indicator, le titrate ka tharollo e tloaelehileng ea 0.02mol/LEDTA. Qetello ke ha 'mala o fetoha ho tloha bopherese bo bofubelu ho ea ho boputsoa bo hloekileng;
4. Etsa tlhahlobo e se nang letho ka nako e le 'ngoe;
5. Bala C # a2+=0.02 $(V-V0) $0.04004M $%&&
V - Bolumo ea tharollo ea EDTA e sebelisoang ha ho etsoa liteko tsa lisebelisoa tsa thuso ea ACR (mL).
V # - Bophahamo ba tharollo e sebelisitsoeng nakong ea tlhahlobo e se nang letho
M - Lekanya boima ba sampole ea thuso ea ho sebetsa ea ACR (g).
Mokhoa oa ho chesoa oa ho lekanya lintho tse inorganic:
Lisebelisoa tsa liteko: ho leka-lekana ha tlhahlobo, sebōpi sa muffle.
Mehato ea liteko: Nka 0.5,1.0g ACR disampole tsa lithuso tsa ho sebetsa (tse nepahetseng ho isa ho 0.001g), li behe ka har'a sebopi se sa fetoheng sa mocheso oa 950 'me u chese hora e le' ngoe, ebe u pholisa 'me u lekanya boima ba' mele ho bala lisebelisoa tse setseng tse chesitsoeng. Haeba lisebelisoa tsa inorganic li eketsoa sampoleng ea lithuso tsa ho sebetsa tsa ACR, ho tla ba le masala a mangata.
Mokhoa oa ho qhibiliha:
1. Lisebelisoa tsa liteko le tekanyo ea tlhahlobo ea reagent; 25mL botlolo ea volumetric; Trichloromethane.
Mohato oa 2: Ho latela mokhoa oa ACR intrinsic viscosity test, bekha 75mg ea sampole ebe u e beha ka har'a 25mL volumetric flask. Kenya motsoako oa trichloromethane. Haeba ho na le turbidity kapa khanya e bonahalang
Nako ea poso: May-27-2024
