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Kjeldahl's nitrogen

См. также в других словарях:

  • Kjeldahl — may refer to:*Johan Kjeldahl (1849 1900), Danish chemist *Kjeldahl method for determining total nitrogen …   Wikipedia

  • Kjeldahl flask — n a round bottomed usu. long necked glass flask for use in digesting the sample in the Kjeldahl method of nitrogen analysis …   Medical dictionary

  • Kjeldahl method — The Kjeldahl method in analytical chemistry is a method for the quantitative determination of nitrogen in chemical substances developed by Johan Kjeldahl during the 1800s. [Julius B. Cohen Practical Organic Chemistry 1910… …   Wikipedia

  • Kjeldahl — Johan G.C., Danish chemist, 1849–1900. See K. apparatus, K. method, macro K. method, micro K. method. * * * Kjel·dahl kel .däl adj of, relating to, or being a method for determining the amount of nitrogen (as in an organic substance) by digesting …   Medical dictionary

  • Kjeldahl , Johan Gustav Christoffer Thorsager — (1849–1900) Danish chemist Kjeldahl, the son of a physician, was born at Jagerpris in Denmark and educated at the Roskilde Gymnasium and the Technical University of Denmark, Copenhagen. After working briefly at the Royal Veterinary and… …   Scientists

  • Kjeldahl-Aufschluss — Schema der Bestimmung Die Kjeldahlsche Stickstoffbestimmung ist eine 1883 entwickelte quantitative, häufig verwendete Bestimmungsmethode des Stickstoffgehaltes. Die Methode wurde nach dem dänischen Chemiker Johan Kjeldahl – Mitarbeiter einer noch …   Deutsch Wikipedia

  • Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   Wikipedia

  • nitrogen group element — ▪ chemical elements Introduction  any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …   Universalium

  • kjeldahl — ˈkelˌdäl adjective Usage: usually capitalized Etymology: after Johan G. C. T. Kjeldahl died 1900 Dan. chemist : of, relating to, or being a method for determining the amount of nitrogen (as in an organic substance) by digesting a sample with… …   Useful english dictionary

  • Kjeldahl method — ▪ chemistry       in analytical chemistry, procedure widely used for estimating the nitrogen content of foodstuffs, fertilizers, and other substances, invented in 1883 by a Danish chemist, Johan G.C.T. Kjeldahl. The method consists essentially of …   Universalium

  • Kjeldahl method — (1883), a method of determining the amount of nitrogen in an organic compound. It consists in heating the material to be analyzed with strong sulfuric acid. The nitrogen is thereby converted to ammonia, which is distilled off and caught in tenth… …   Medical dictionary

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