Selective Preconcentration of Gold from Ore Samples

Table 3

Determination of Au in CMC ore sample and Gold Ore (MA-1b) CRM.

Samples	Au concentration	Corrected values according to 97% desorption
	(mgkg^−1)
CMC sample
Au (found)	< LOD	< LOD
Au (claimed)	1.34	1.34
Au (spiked found)	13.6 ± 0.6	14.1 ± 0.6
Au (spiked)	15	15
Gold Ore (MA-1b)
Au (found)	15.0 ± 1.0	15.5 ± 1.0
Au (certified value)	17.0 ± 0.3	17.0 ± 0.3

Values are given as mean ± SD, N = 3 (number of replicates).