UNI EN 16277 : 2012
Current
The latest, up-to-date edition.
ANIMAL FEEDING STUFFS - DETERMINATION OF MERCURY BY COLD-VAPOUR ATOMIC ABSORPTION SPECTROMETRY (CVAAS) AFTER MICROWAVE PRESSURE DIGESTION (EXTRACTION WITH 65% NITRIC ACID AND 30% HYDROGEN PEROXIDE)
23-08-2012
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
6 Procedure
7 Calculation
8 Precision
9 Test report
Annex A (informative) - Results of the interlaboratory
tests
Annex B (informative) - Flowchart - Determination of
mercury by CVAAS after microwave digestion
Annex C (informative) - Alternative digestion procedure
with the same extraction efficiency: Acid
digestion with a mixture of 65% nitric
acid and 70% perchloric acid (7:3 v/v) at
atmospheric pressure
Annex D (informative) - Alternative digestion procedure
with the same extraction efficiency: Acid
digestion with a mixture of 65% nitric acid,
37% hydrochloric acid and 30% hydrogen
peroxide under reflux
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