Aqua regia super trace analysisALS offers both a standard and variation of an aqua regia digestion from a 0.5g sample. Method ME-MS41L™ method utilises the typical aqua regia acid mixture of nitric and hydrochloric acids in a 1:3 ratio. A weaker digestion using a 1:1 ratio of nitric and hydrochloric acids is also an option with method ME-MS41W™. Both methods use relatively low temperatures for digestion to maintain volatiles such as Hg in the sample. Gold reported by these methods is usually considered as semi-quantitative as the sample weight is too low to be representative.
https://www.alsglobal.com/en/geochemistry/generative-exploration/aqua-regia-digestions
Aqua regia super trace analysisALS offers both a standard and...
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