Ọna Ṣiṣayẹwo Akoonu Palladium Ni Awọn ayase Palladium

1. Áljẹbrà
Imudara palladium ti palladium catalysts nipasẹ pyrometallurgy, lẹhinna tu palladium ni admixture acid, omi ti wa ni atupale nipasẹ AAS.
2. Reagent
2.1 Hydrochloric acid (ρ1.19g/milimita)
2.2 Nitric acid (ρ1.42g/milimita)
2.3 Admixture acid (Hydrochloric acid ati Nitric acid adalu, iwọn didun bi 3:1)
2.4 Perchloric acid (AR)
2.5 iṣuu soda kiloraidi (50g/li)
2.6 Ojutu boṣewa ti palladium:
Ṣe iwọn 0.1g palladium (jade si 0.0001g), eyiti o jẹ tituka patapata ni 40mL acid admixture nipasẹ ooru kekere.Fi iṣuu soda kiloraidi 5mL sinu ojutu iṣaaju, yọ kuro lati fẹrẹ gbẹ, lẹhinna fi 3mL hydrochloric acid kun, yọ kuro lati gbẹ, tun ṣe awọn igbesẹ meji ni igba mẹta.Fi 10mL hydrochloric acid kun, yipada sinu igo agbara, dilute si iwọn, dapọ ni iṣọkan, akoonu ti palladium ninu ojutu jẹ 1.0mg / mL.
3. Ohun elo
3.1 AAS, ina, gaasi iru: acetylene-air.Awọn paramita ti ṣeto ni ibamu si igbasilẹ ti iwe ounjẹ.
3.2 Wọpọ lab ohun elo.
4. Idasonu apẹẹrẹ
Gbe 0.15g (gangan si 0.0001g) ti ayẹwo ti a sọ silẹ nipasẹ pyrometallurgy ni beaker 100mL, ṣe awọn ayẹwo afiwera meji.Fi 15mL admixture acid kun, ni akoko yii fi 5mL perchloric acid, yọ kuro nipasẹ ooru, yọ kuro lati gbẹ, fi 5mL soda kiloraidi ojutu, lẹhinna fi 3mL hydrochloric acid, evapor o fẹrẹ gbẹ, tun igbesẹ meji naa ni igba mẹta.Fi 10mL hydrochloric acid kun, yipada sinu igo agbara, dilute si iwọn, dapọ ni iṣọkan, akoonu ti palladium ninu ojutu ayẹwo ni isunmọ 1.5mg / mL, yi 10mL ti ojutu ayẹwo sinu igo agbara 100mL, fi 3mL hydrochloric acid, dilute lati ṣe iwọn, akoonu ti palladium ninu ojutu ayẹwo ni isunmọ 0.15mg/mL.
5. Npinnu akoonu
5.1 Waye ojutu boṣewa ti a kọ sinu AAS ki o ṣe ọna kika boṣewa (ojutu boṣewa 2,4,6,8,10ppm), pinnu imudani ti ayẹwo, lẹhinna ṣe iṣiro ifọkansi ti ayẹwo ni ibamu si ọna ti iwọn.