Фрукты, овощи и продукты их переработки. Определение содержания бензойной кислоты. Спектрофотометрический метод
Название (англ.):
Fruits, vegetables and derived products; Determination of benzoic acid content; Spectrophotometric method
Описание (англ.):
The method consists in homogenizing the product, followed by dilution and acidification of a test portion, extraction of the acid by diethyl ether, then alkaline re-extraction of this acid and purifying by oxidation using acidified potassium dichromate, determination of the acid with a suitable spectrophotometer. The method cannot be applied in the presence of p-chlorobenzoic acid and cinnamic acid, respectively.
Дата регистрации:
01.05.78
Дата введения:
01.05.78
Код КГС:
Н09
Код ОКСТУ:
9760;9709;9109;9160
Код ОКС(МКС):
67.080.01
Код ОКП:
9760;9709;9109;9160
Нормативные ссылки:
NF V05-114-1972, EQV*UNE 34-225-81-1981, EQV
Ключевые слова:
BENZOIC ACID BENZOIC ACIDS CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FRUIT-AND VEGETABLE PRODUCTS FRUITS SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY VEGETABLES CHEMICAL ANALYSIS AND TESTIN