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

被引：113
|
作者：
Marcó, A
Rubio, R
Compañó, R
Casals, I
机构：
[1] Univ Barcelona, Dept Quim Analit, E-08028 Barcelona, Spain
[2] Univ Barcelona, Serv Cientificotecn, E-08028 Barcelona, Spain
来源：
TALANTA | 2002年 / 57卷 / 05期
关键词：
total nitrogen; Kjeldahl method; combustion method; animal feed;
D O I：
10.1016/S0039-9140(02)00136-4
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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 reproducibility (S.D., 0.11-0.39 from Kjeldahl and 0.15-0.37 from combustion). R.S.D. is always below NO. These results show that the CM is suitable for the analysis of protein content in animal feed (5-75% protein content). The CM is recommended owing to its shorter analysis time, its cost and its environmental suitability. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：1019 / 1026
页数：8
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