Uburyo bwo kumenya Ca2 +:
Ibikoresho byubushakashatsi hamwe na reagent: inzoga;Amashanyarazi;Umuyoboro;Burette;Itanura ry'amashanyarazi;Ethanol;Acide Hydrochloric, NH3-NH4Cl igisubizo cya buffer, icyerekezo cya calcium, 0.02mol / LEDTA igisubizo gisanzwe.
Intambwe yikizamini:
1. Gupima neza umubare munini wintangarugero yo gutunganya ACR (neza kugeza 0.0001g) hanyuma ubishyire muri beaker.Wandike etanol ya anhydrous, hanyuma ushyiremo aside irenga 1: 1 ya hydrochloric hanyuma uyishyushya ku itanura ryamashanyarazi kugirango ion ion calcium ikore neza na acide hydrochloric;
2. Karaba n'amazi hanyuma uyungurure hamwe na feri kugirango ubone amazi meza;
3. Hindura agaciro ka pH kurenza 12 ukoresheje igisubizo cya buffer ya NH3-NH4Cl, ongeramo urugero rukwiye rwerekana calcium, hanyuma witondere hamwe na 0.02mol / LEDTA igisubizo gisanzwe.Iherezo ni igihe ibara rihinduka kuva umutuku wijimye ugana ubururu bwera;
4. Kora ikizamini cyuzuye icyarimwe;
5. Kubara C # a2 + = 0.02 $ (V-V0) $ 0.04004M $% &&
V - Umubare wibisubizo bya EDTA ukoreshwa mugihe ugerageza ingero zifasha gutunganya ACR (mL).
V # - Umubare wibisubizo byakoreshejwe mugihe cyikizamini cyubusa
M - Gupima ubwinshi bwimfashanyo yo gutunganya ACR (g).
Uburyo bwo gutwika gupima ibintu kama:
Ibikoresho byubushakashatsi: impirimbanyi zisesenguye, itanura rya muffle.
Intambwe yikizamini: Fata 0.5,1.0g ACR yingero zifasha gutunganya (neza kugeza 0.001g), ubishyire mu itanura rya 950 rihoraho ryumuriro hanyuma utwike isaha 1, hanyuma ukonje kandi upime kugirango ubare ibikoresho byasigaye.Niba ibintu bidakoreshwa byongeweho icyitegererezo cyibikoresho byo gutunganya ACR, hazasigara byinshi.
Uburyo bwo gukemura:
1. Ibikoresho byubushakashatsi hamwe nuburinganire bwisesengura;Flask ya 25mL;Trichloromethane.
Intambwe ya 2: Ukurikije uburyo bwo gupima ACR intrinsic viscosity, bapima 75mg by'icyitegererezo hanyuma ubishyire muri flask ya 25mL.Ongeramo trichloromethane solvent.Niba hari akajagari cyangwa urumuri rugaragara
Igihe cyo kohereza: Gicurasi-27-2024
