P. Nowinski et V. Hodge, EVALUATION OF ICP-MS MICROWAVE-OVEN PREPARATION FOR THE RAPID ANALYSIS OF ORE SAMPLES FOR GOLD AND THE PLATINUM-GROUP METALS, Atomic spectroscopy, 15(3), 1994, pp. 109-114
Aqua regia-microwave oven digestion and ICP-MS analysis were evaluated
as a procedure for the rapid determination of gold and the platinum-g
roup metals in three reference ores. Results indicate that the recover
ies of the metals are element- and matrix-dependent. Average recoverie
s ranged from 30%. for ruthenium to 90% for rhodium. Although quantita
tive recoveries are not achieved, the procedure is a good rapid-turnar
ound survey method that can handle high sample throughput.