Critical evaluation of spiking of low-grade ore samples in activation analysis for gold and uranium.


In applying non-destructive neutron-activation analysis for gold and uranium in spiked low-grade ore samples, the following extrapolated unspiked concentrations were measured: 0.27(8) +/- 0.01(5) ppm gold (chemical assay: 0.20(2) +/- 0.02(0) ppm gold); 25.1 +/- 1.1 ppm uranium (chemical assay value: 19.5 +/-2.0 ppm uranium). Different approaches to the… (More)


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