Different elements by ICP-AES:

Further, the trace elements involving Mo, Ag, Cd and Hg within mineralised geological samples could readily be determined when they occur at levels above 'background' concentration. Lead could also be measured in mineralised samples but not as well at normal levels in silicates (below 20-40 µg/g). The detection limits for Sn, W, U and Th are not good, but concentrations above 50 µg/g can be measured. It is also possible to determine the rare earth elements down to sub µg/g level in a rock sample using a concentration technique.

Table:  Detection limits (µg/ml) of different elements by ICP-AES