Atomic-absorption determination of traces of gold in powdered geological samples using electrothermal pulsed atomization

Geological and inorganic materials

“…Limits of detection were as follows: Pd, Rh, and Au, 0.5 ppb; Pt, 2 ppb. Gold was determined directly from the powdered sample using a pulsed graphite atomizer by Aedksenko et al (39). The method used 60 mg of sample spread out in a 20-mm graphite tube and a two-step heating cycle to minimize nonspecific absorption and scattering from the sample matrix.…”