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ISO 6637:1984 Fruits, vegetables and derived products -- Determination of mercury content -- Flameless atomic absorption method
standard by International Organization for Standardization, 06/01/1984
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The method consists in decomposing of organic matter in a sulfuric-nitric acid medium, reducing of mercury(II) to metallic mercury by the action of tin(II)chloride, entraining of the mercury vapour by a current of air and determing in an enclosed apparatus.