Indlela yokuhlalutya umxholo wePalladium kwiPalladium Catalysts

1. Isishwankathelo
I-palladium yokutyebisa i-palladium catalysts nge-pyrometallurgy, emva koko inyibilikise i-palladium kwi-asidi ye-admixture, i-liquid ihlalutywa yi-AAS.
2. I-Reagent
2.1 Hydrochloric acid(ρ1.19g/ml)
2.2 Nitric acid(ρ1.42g/ml)
2.3 Umxube we-asidi (i-Hydrochloric acid kunye ne-nitric acid exutywe, umthamo njenge-3: 1)
2.4 Perchloric acid (AR)
2.5 Umxube weSodium Chloride (50g/L)
2.6 Isisombululo esisemgangathweni sepalladium:
Ubunzima be-0.1g palladium (i-extract kwi-0.0001g), echithwa ngokupheleleyo kwi-40mL admixture acid ngobushushu obuphantsi.Yongeza i-5mL yesisombululo se-sodium chloride kwisisombululo sangaphambili, yifake ngumphunga ukuba iphantse yome, emva koko wongeze i-3mL i-hydrochloric acid, ifake umphunga iphantse yome, phinda amanyathelo amabini kathathu.Yongeza i-10mL i-hydrochloric acid, utshintshe kwibhotile yamandla, uhlambulule ukulinganisa, udibanise ngokufanayo, umxholo we-palladium kwisisombululo ngu-1.0mg / mL.
3. Izixhobo
3.1 I-AAS, iFlame, uhlobo lwegesi: i-acetylene-air.Iiparamitha zisetwe ngokwerekhodi yencwadi yokupheka.
3.2 Izixhobo zelebhu eziqhelekileyo.
4. Ukuchithwa kwesampuli
Beka i-0.15g (ngokuchanekileyo kwi-0.0001g) yesampuli echithwa yi-pyrometallurgy kwi-beaker ye-100mL, yenza iisampuli ezimbini ezihambelanayo.Yongeza i-15mL admixture acid, okwangoku yongeza i-5mL ye-perchloric acid, yitshitshise ngokushisa, yifake umphunga ukuba iphantse yome, yongeza isisombululo se-sodium chloride eyi-5mL, emva koko wongeze i-3mL ye-hydrochloric acid, i-evapor iphantse yome, phinda amanyathelo amabini kathathu.Yongeza i-10mL i-hydrochloric acid, utshintshe kwibhotile yomthamo, uhlambulule ukulinganisa, udibanise ngokufanayo, umxholo we-palladium kwisisombululo sesampuli ngokumalunga ne-1.5mg / mL, utshintshe i-10mL yesisombululo sesampuli kwi-100mL umthamo webhotile, yongeza i-3mL i-hydrochloric acid, i-dilute. ukulinganisa, umxholo we-palladium kwisisombululo sesampuli malunga ne-0.15mg / mL.
5. Ukugqiba umxholo
5.1 Faka isisombululo esisezantsi esihlanganisiweyo kwi-AAS kwaye wenze i-curve esemgangathweni (isisombululo esiqhelekileyo 2,4,6,8,10ppm), sinqume i-absorbency yesampuli, emva koko ubale ukuxinwa kwesampuli ngokwe-curve stanadard.