1. Abstract
I-palladium yokucebisa ye-palladium catalysts nge-pyrometallurgy, bese incibilikisa i-palladium ku-asidi exubile, uketshezi luhlaziywa yi-AAS.
2. I-Regent
2.1 I-Hydrochloric acid(ρ1.19g/ml)
2.2 Nitric acid(ρ1.42g/ml)
2.3 I-Admixture acid (i-Hydrochloric acid ne-Nitric acid ixutshwe,umthamo njengo-3:1)
2.4 I-Perchloric acid (AR)
2.5 Isixazululo se-Sodium Chloride (50g/L)
2.6 Isixazululo esijwayelekile se-palladium:
Kala i-palladium engu-0.1g(khipha ku-0.0001g), echithwa ngokuphelele ku-40mL we-admixture acid ngokushisa okuphansi.Engeza isixazululo se-sodium chloride engu-5mL kwikhambi langaphambili, lihwamulise licishe lome, bese wengeza u-3mL hydrochloric acid, lihwamulise licishe lome, phinda izinyathelo ezimbili kathathu.Engeza i-10mL hydrochloric acid, shintshela ebhodleleni lomthamo, hlambulula ukuze ulinganise, uhlanganise ngokulinganayo, okuqukethwe kwe-palladium kusixazululo ngu-1.0mg/mL.
3. Amathuluzi
3.1 I-AAS, I-Flame, uhlobo lwegesi: i-acetylene-air.Amapharamitha asethwe ngokuya ngerekhodi lebhuku lokupheka.
3.2 Izisetshenziswa zelebhu ezijwayelekile.
4. Ukulahlwa kwesampula
Beka u-0.15g(ngokuqondile kuya ku-0.0001g) wesampula elahlwe yi-pyrometallurgy ku-beaker engu-100mL, yenza amasampula amabili afanayo.Engeza i-admixture acid engu-15mL, okwamanje engeza u-5mL i-perchloric acid, uyikhiphe ngokushisa, uyihwamulise ukuze icishe yome, engeza isixazululo se-sodium chloride engu-5mL, bese ufaka u-3mL we-hydrochloric acid, uyihwamulise ukuze icishe yome, phinda izinyathelo ezimbili kathathu.Engeza i-10mL hydrochloric acid, shintshela ebhodleleni lomthamo, hlambulula ukuze ulinganise, uxube ngokufanayo, okuqukethwe kwe-palladium kusixazululo sesampula cishe ngu-1.5mg/mL, shintsha u-10mL wesixazululo sesampula ebhodleleni lomthamo we-100mL, engeza u-3mL we-hydrochloric acid, hlambulula. ukukala, okuqukethwe kwe-palladium kusixazululo sesampula cishe ngu-0.15mg/mL.
5. Ukunquma okuqukethwe
5.1 Sebenzisa ikhambi elijwayelekile elihlanganisiwe ku-AAS bese wenza ijika elijwayelekile(isixazululo esijwayelekile esingu-2,4,6,8,10ppm), nquma ukumunca kwesampula, bese ubala ukuhlangana kwesampula ngokuya ngejika le-stanadard.
Isikhathi sokuthumela: Apr-30-2022