Flameless atomic-absorption determination of gold in geological materials

Weathering of sulfidic shale and copper mine waste: secondary minerals and metal cycling in Great Smoky Mountains National Park, Tennessee, and North Carolina, USA

“…Gold was analyzed by graphite furnace atomic absorption spectrophotometry (method GFAA) following the procedure of Meier (1980); arsenic was analyzed by atomic absorption following a gas hydride generation step (method AAH3). A cold vapor method (O'Leary and others 1996) was used in combination with an automated analyzer for mercury (method CVAC).…”

Mineral resources of the South Warner Contiguous Wilderness Study Area, Modoc County, California

“…Several elements of special interest were also analyzed by more sensitive techniques. Gold concentrations were determined in the rocks and stream sediments by a graphite furnace atomic-absorption method having a detection limit of 2 ppb (Meier, 1980). Gold analyses obtained by this method largely represent the gold introduced into the rock by mineralization and not the total gold concentrations in the rock; the common rock-forming silicates, which may contain trace amounts (<5 ppb) of gold, are not decomposed by the method used in gold analysis sample preparation.…”

Mineral resources of the Blue Canyon and Owyhee Breaks Wilderness Study Areas, Malheur County, Oregon

“…The mercury analyses were done by atomic absorption and the arsenic, antimony, cadmium, bismuth, and zinc analyses were done by inductively coupled argon plasma-atomic emission spectrography (Crock and others, 1987). Gold analyses were done by graphite-furnace atomic absorption (Meier, 1980), whi~h has a lower level of detection of 2 parts per billion (ppb ). This method.…”