Abstract
A procedure has been developed for the determination of mercury in silicate rocks in the range 1 p.p.b.-1 p.p.m. The sample is heated to 950° in a current of hydrogen. The mercury which volatilizes is condensed in a trap cooled with liquid nitrogen and determined by atomic absorption spectrophotometry. The method had a coefficient of variation of 4.5% at a mercury level of 80 p.p.b.
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