Abstract
Silica gel chemically modified with mercaptopropyl groups is proposed for the extraction and preconcentration of palladium. This silica gel extracts palladium(II) at an acidity from 6M HCl to pH 4 with distribution ratios at a level of n× 104 g/cm3. Hyphenated procedures for the adsorption–photometric determination of palladium with detection limits of 0.1 μg/0.1 g of the adsorbent have been developed. The procedure includes the adsorption preconcentration of palladium, elution by hot (50 ± 5°C) 8% thiourea in 1M HCl, and atomic absorption determination of palladium in the eluate (detection limit is 0.05 μg/mL). The procedures were applied to the determination of palladium in standard reference samples of copper–nickel ore and copper concentrate.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
