简介:2.1 A representative portion of sample is digested in a microwave unit (a variation of
Method 3052) using nitric and hydrochloric acids in a closed fluorocarbon container. The sample
is digested under pressure to aid i简介:2.1 A representative portion of sample is digested in a microwave unit (a variation of
Method 3052) using nitric and hydrochloric acids in a closed fluorocarbon container. The sample
is digested under pressure to aid in the dissolution of organic compounds containing mercury.
2.2 An aliquot of the digested sample is diluted and subjected to cold digestion with an
acid/bromate/bromide mixture.
2.3 Stannous chloride is added to the digested sample as a reducing agent to produce
Hg0. The reduced mercury is separated from the sample/reagent mixture as a vapor that is carried
to the fluorescence detector by a stream of high purity argon.详细>