Uncommon · History
Kjeldahl method
Analytical chemistry method to determine the amount of nitrogen in certain organic compounds
The Kjeldahl method or Kjeldahl digestion (Danish pronunciation: [ˈkʰelˌtɛˀl]) in analytical chemistry is a method for the quantitative determination of a sample's organic nitrogen plus ammonia/ammonium (NH3/NH4+). Without modification, other forms of inorganic nitrogen, for instance nitrate, are not included in this measurement.
From Wikipedia
The Kjeldahl method or Kjeldahl digestion (Danish pronunciation: [ˈkʰelˌtɛˀl]) in analytical chemistry is a method for the quantitative determination of a sample's organic nitrogen plus ammonia/ammonium (NH3/NH4+). Without modification, other forms of inorganic nitrogen, for instance nitrate, are not included in this measurement. Using an empirical relation between Kjeldahl nitrogen and protein, it is an important method for indirectly quantifying protein content of a sample. This method was developed by the Danish chemist Johan Kjeldahl in 1883.
Text: Wikipédia, CC BY-SA 4.0. · Image: According to the paper by D. Thorburn Burns, the image was c... (Public domain) ·
Related cards
-
★
Seliwanoff's test
Chemical test
-
★
Dumas method
Method for the quantitative determination of nitrogen in chemical substances
-
★★
Karl Fischer titration
Classic titration method in analytical chemistry
-
★
Beilstein test
Qualitative chemical test for organic halides
-
★
Oxidase test
Microbiological and biochemical method for identification
-
★★★
Titration
Laboratory method for determining the concentration of an analyte