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La mise au point du dosage du chrome et du nickel dans les vins par spectrometrie d'absorption atomique sans flamme avec un four en graphite a ete realisee. On a montre que si de tres faibles enrichissements en chrome se produisent pour les vins conserves en cuves d'acier inoxydable, par contre le verre des bouteilles peut en ceder des quantites importantes en quelques annees. L'augmentation de la teneur en nickel reste toujours tres faible dans ces conditions. +++ A method for the determination of chromium and nickel in wines has been established using flameless atomic absorption spectrometry with graphite furnace, which allowed us to show that there is a very low level of contamination by chromium in wines stocked in stainless steel tanks. To the contrary wines stored in glass bottles mac extract exceptionally high quantities of chromium within a few years. Changes in nickel content under the same conditions remain very slight.

Teneur des vins en chrome et en nickel. Causes d'enrichissement