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ISO 5518:2007-ed.2.0

Fruits, vegetables and derived products — Determination of benzoic acid content — Spectrophotometric method

NORMA vydaná dňa 18.1.2007

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Informácie o norme:

Označenie normy: ISO 5518:2007-ed.2.0
Dátum vydania normy: 18.1.2007
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO

Anotácia textu normy ISO 5518:2007-ed.2.0 :

Description / Abstract: ISO 5518:2007 specifies a method for determining the benzoic acid content of fruits, vegetables and derived products. As chlorobenzoic acids are resistant to oxidation, the method cannot be applied in the presence of p-chlorobenzoic acid, as the absorption spectrum of this acid is close to that of benzoic acid. Neither can it be used in the presence of cinnamic acid, which is transformed into benzoic acid by chromic acid oxidation.