Rk. Tewari et Jr. Gupta, DETERMINATION OF GOLD IN GEOLOGICAL-MATERIALS BY FAAS USING POTASSIUM-PERMANGANATE AND DILUTE HYDROCHLORIC-ACID AT ROOM-TEMPERATURE, Atomic spectroscopy, 16(2), 1995, pp. 90-91
A dissolution method for gold determination in geological materials us
ing potassium permanganate and hydrochloric acid is described. This me
thod replaces the time-consuming, hazardous, and tedious aqua regia me
thod currently used for gold determination in geological materials wit
h flame atomic absorption spectrometry (FAAS). In the method proposed,
gold is coprecipitated with mercury or tellurium after dissolution. T
he procedure is simple and economical.