Comparison of the Kjeldahl method and a combustion method for total nitrogen determination in animal feed

• Published in: Talanta (Oxford) Vol. 57; no. 5; pp. 1019 - 1026
• Main Authors: Marcó, Alejandro, Rubio, Roser, Compañó, Ramon, Casals, Isidre
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 03.07.2002; Oxford Elsevier
• Subjects: Animal feed; Biological and medical sciences; Combustion method; Feed and pet food industries; Food industries; Fundamental and applied biological sciences. Psychology; Kjeldahl method; Total nitrogen; Kjeldahl method; Total nitrogen; Combustion method; Animal feed; Combustion; Measurement method; Comparative study; Feed; Quantitative analysis

The features of the Dumas combustion method (CM) and those of the Kjeldahl method (KM) were compared as they apply to total nitrogen determination in animal feed. Both methods achieved similar repeatability (S.D., 0.11–0.38 from Kjeldahl and 0.15–0.36 from combustion) and similar intra-laboratory re...