Txoj Kev Ntsuas Palladium Cov ntsiab lus hauv Palladium Catalysts

1. Paub meej
Enrichment palladium ntawm palladium catalysts los ntawm pyrometallurgy, ces yaj lub palladium nyob rau hauv admixture acid, cov kua yog soj ntsuam los ntawm AAS.
2. Reagent
2.1 Hydrochloric acid (R1.19g / ml)
2.2 Nitric acid (R1.42g / ml)
2.3 Admixture acid (Hydrochloric acid thiab Nitric acid sib xyaw, ntim li 3: 1)
2.4 Perchloric acid (AR)
2.5 Sodium Chloride kua (50g / L)
2.6 Txuj kev daws teeb meem ntawm palladium:
Nyhav 0.1g palladium (extract rau 0.0001g), uas yog tag yaj nyob rau hauv 40mL admixture acid los ntawm tsawg tshav kub.Ntxiv 5mL sodium chloride tov rau hauv cov tshuaj qub, evapor nws yuav luag qhuav, ces ntxiv 3mL hydrochloric acid, evapor nws yuav luag qhuav, rov ua ob kauj ruam peb zaug.Ntxiv 10mL hydrochloric acid, hloov mus rau hauv lub raj mis muaj peev xwm, dilute rau nplai, sib tov nws uniformly, cov ntsiab lus ntawm palladium nyob rau hauv cov tshuaj yog 1.0mg / mL.
3. Cov cuab yeej
3.1 AAS, Nplaim, roj hom: acetylene-air.Cov kev txwv yog teem raws li cov ntaub ntawv ntawm cookbook.
3.2 Common lab apparatus.
4. Qauv pov tseg
Muab 0.15g (xws li rau 0.0001g) ntawm cov qauv pov tseg los ntawm pyrometallurgy hauv 100mL beaker, ua ob qho piv txwv.Ntxiv 15mL admixture acid, lub sijhawm ntxiv 5mL perchloric acid, disslove los ntawm tshav kub, evapor nws yuav luag qhuav, ntxiv 5mL sodium chloride tov, ces ntxiv 3mL hydrochloric acid, evapor nws yuav luag qhuav, rov ua ob kauj ruam peb zaug.Ntxiv 10mL hydrochloric acid, hloov mus rau hauv lub hwj muaj peev xwm, dilute mus rau nplai, sib tov nws uniformly, cov ntsiab lus ntawm palladium nyob rau hauv cov qauv tov yog kwv yees li 1.5mg / mL, hloov 10mL ntawm cov qauv tov rau hauv 100mL muaj peev xwm lub raj mis, ntxiv 3mL hydrochloric acid, dilute. Raws li kev ntsuas, cov ntsiab lus ntawm palladium hauv cov qauv kev daws yog kwv yees li 0.15mg / mL.
5. Kev txiav txim siab cov ntsiab lus
5.1 Siv cov txheej txheem kev daws teeb meem rau hauv AAS thiab ua tus qauv nkhaus (txheej txheem tov 2,4,6,8,10ppm), txiav txim siab absorbency ntawm tus qauv, ces xam cov concentration ntawm cov qauv raws li stanadard nkhaus.