Крахмал и его производные. Определение содержания азота по методу Кьельдаля.Cпектрофотометрический метод
Название (англ.):
Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
Описание (англ.):
Destruction of organic matter by sulphuric acid in the presence of a compound catalyst (see ISO 1871), alkalization of the reaction products, destillation of the liberated ammonia and collection in a sulphuric acid solution, followed by measuring of the ammonium salt formed after the addition of Nessler reagent. The method is provided for contents less than 0,025 % (m/m). For greater contents, see ISO 3188.
Дата регистрации:
01.06.78
Дата введения:
01.06.78
Код КГС:
Н49
Код ОКСТУ:
9188;9189;9109
Код ОКС(МКС):
67.180.20
Код ОКП:
9188;9189;9109
Нормативные ссылки:
DIN 10303-3-1980, EQV*prEN 25378-1994, EQV*EN ISO 5378-1994, EQV*DIN EN ISO 5378-1994, EQV*BS EN ISO 5378(1994/BSI), EQV*NF V03-608(1994/AFNOR), EQV*NF EN ISO 5378(1994/AFNOR), EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FOOD PRODUCTS KJELDAHLS METHOD NITROGEN SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY STARCH PRODUCTS STARCHES CHEMICAL ANALYSIS AND TESTIN KJELDAHL METHOD