1. Abstract
Enrichment palladium ye palladium catalysts ne pyrometallurgy, wobva wanyungudutsa palladium mu admixture acid, mvura yacho inoongororwa neAAS.
2. Reagent
2.1 Hydrochloric acid(ρ1.19g/ml)
2.2 Nitric acid(ρ1.42g/ml)
2.3 Admixture acid (Hydrochloric acid neNitric acid yakasanganiswa,vhoriyamu se3:1)
2.4 Perchloric acid (AR)
2.5 Sodium Chloride mhinduro (50g/L)
2.6 Yakajairwa mhinduro ye palladium:
Were 0.1g palladium (kubvisa ku0.0001g), iyo inonyungudika zvachose mu40mL admixture acid nekupisa kwakaderera.Wedzera 5mL sodium chloride solution mune yaimbova mhinduro, ipfavise kusvika inenge yakaoma, wobva wawedzera 3mL hydrochloric acid, iputsise kupotsa kuoma, dzokorora nhanho mbiri katatu.Wedzera 10mL hydrochloric acid, shandura mubhodhoro rehuwandu, dilute kusvika kuchiyero, sanganisa zvakafanana, zviri palladium mumushonga ndeye 1.0mg/mL.
3. Zvishandiso
3.1 AAS, Murazvo, gasi rudzi: acetylene-mhepo.Iwo ma parameter akaiswa maererano nerekodhi yebhuku rekubika.
3.2 Zvakajairwa lab zvishandiso.
4. Sample kuraswa
Isa 0.15g (chaizvo ku 0.0001g) yemuenzaniso wakaraswa ne pyrometallurgy mu 100mL beaker, ita sampuli mbiri dzakafanana.Wedzera 15mL admixture acid, panguva iyi wedzera 5mL perchloric acid, isaide nekupisa, ipfave kusvika inenge yakaoma, wedzera 5mL sodium chloride solution, wobva wawedzera 3mL hydrochloric acid, moita kuti isvike pakuoma, dzokorora nhanho mbiri katatu.Wedzera 10mL hydrochloric acid, shandura kuita bhodhoro rekutakura, dilute kusvika pachiyero, sanganisa zvakafanana, zviri mupalladium mumuenzaniso mhinduro inenge 1.5mg/mL, shandura 10mL yemhinduro yemuenzaniso mu100mL bhodhoro, wedzera 3mL hydrochloric acid, dilute. kuyera, zvirimo zvepalladium mumuenzaniso mhinduro inenge 0.15mg/mL.
5. Kusarudza zvemukati
5.1 Isa iyo yakagadzirwa yakajairwa mhinduro muAAS uye ita iyo yakajairwa curve (yakajairwa mhinduro 2,4,6,8,10ppm), determing absorbency yemuyero, wobva waverenga kuwanda kweiyo sampuli zvinoenderana neiyo stanadard curve.
Nguva yekutumira: Kubvumbi-30-2022