Nzira yekuona Ca2+:
Zvishandiso zvekuedza uye ma reagents: ma beakers; Conical flask; Funnel; Burette; Electric furnace; Anhydrous ethanol; Hydrochloric acid, NH3-NH4Cl buffer solution, calcium indicator, 0.02mol/LEDTA standard solution.
Matanho ekuyedza:
1. Yera nemazvo huwandu hwakati hweACR processing aid sampuro (yakarurama kusvika 0.0001g) woiisa mubeaker. Nyorovesa neanhydrous ethanol, wobva wawedzera 1:1 hydrochloric acid woipisa pamoto wemagetsi kuti calcium ions ikwanise kuita zvese nehydrochloric acid;
2. Geza nemvura woisa sefa nefunnel kuti mvura yacho ibude yakachena;
3. Gadzirisa pH kuti ipfuure 12 uchishandisa mhinduro yeNH3-NH4Cl buffer, wedzera huwandu hwakakodzera hwecalcium indicator, wobva wawedzera titrate ne 0.02mol/LEDTA standard solution. Mugumo ndewekuti kana ruvara rwukachinja kubva patsvuku yepepuru kuenda pabhuruu chairo;
4. Ita bvunzo isina chinhu panguva imwe chete;
5. Verenga C # a2+=0.02 $(V-V0) $0.04004M $%&&
V - Huwandu hwemhinduro yeEDTA inonwiwa pakuyedzwa kweACR processing aid samples (mL).
V # - Huwandu hwemushonga unonwiwa panguva yekuedza kusina chinhu
M — Yera huremu hwemuenzaniso wekubatsira pakugadzirisa ACR (g).
Nzira yekupisa yekuyera zvinhu zvisina organic:
Zvishandiso zvekuedza: chiyero chekuongorora, muffle furnace.
Matanho ekuyedza: Tora 0.5,1.0g ACR processing aid sampuro (dzakarurama kusvika 0.001g), dziise muchoto chemuffle chinodziya che950 constant temperature wochipisa kweawa imwe chete, wozodziisa woyera kuti uone zvakasara zvakatsva. Kana zvinhu zvisina organic zvikawedzerwa kumuenzaniso weACR processing aid, pachava nezvakawanda zvakasara.
Nzira yekunyungudutsa:
1. Zvishandiso zvekuyedza uye chiyero chekuongorora reagent; 25mL volumetric flask; Trichloromethane.
Danho rechipiri: Zvichienderana nenzira yekuongorora kupenya kwemuviri (ACR intrinsic viscosity testing method), yera 75mg yemuenzaniso woiisa mu 25mL volumetric flask. Wedzera trichloromethane solvent. Kana paine turbidity kana chiedza chinoonekwa.
Nguva yekutumira: Chivabvu-27-2024
