Based in our previous work for determination of Hg in rice [24],
we assayed the two selected conditions for mercury cold vapour
generation: 25% (v/v) HCl and 5% (v/v) HNO3. In both cases, we
added KBr/KBrO3 to release Hg from remaining organic matter and
hydroxylamine hydrochloride to remove the excess of oxidant
agents.
To evaluate the effect of the sample matrix on the mercury
fluorescence the slope of the standard addition method applied to