Уголь бурый и лигниты. Определение содержания гуминовых кислот
Название (англ.):
Brown coals and lignites; Determination of humic acids
Описание (англ.):
An analytical sample of coal from which bitumes have been removed is treated with alkaline solution of sodium pyrophosphate at ambient temperature. With the treated sample a single stage extraction with a hot sodium hydroxide solution is performed and the humic acids are precipitated with an excess of ineral acid. The precipitate is weighed.
Заменён стандартами:
ISO 5073:1999
Дата регистрации:
25.01.86
Дата введения:
01.07.85
Код КГС:
А19
Код ОКСТУ:
0320;0309
Код ОКС(МКС):
73.040
Код ОКП:
0320;0309
Ключевые слова:
ACIDS CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING COAL DETERMINATION OF CONTENT HUMIC ACIDS LIGNITE MINERALS MINERALS AND ORES SOLID FUELS CHEMICAL ANALYSIS AND TESTIN