摘要
建立并验证了采用连续流动分析法(CFA)测定烟草中的氨含量。连续测定的RSD<2%,13个实验室共同实验的重复性和再现性值分别为:r=0.0477x+0.0043(R2=0.930)和R=0.0698x+0.0246(R2=0.980)。不同水平试验的回收率>98%,平均回收率99.7%。分别与HPLC和IC法比较,t检验结果表明CFA与2方法之间均无显著性差异。
The determination of ammonia in tobacco using continuous flow analysis method was validated. RSD 〈 2%. A col- laborative study involving 13 laboratories and 6 samples showed that the repeatability limit（r） and reproducibility limit （R） is linear with ammonia content： r = 0.0477x ＋ 0.0043 （ R^2 = 0.930） and R = 0.0698x ＋ 0.0246 （ R^2 = 0.980）. The recoveries of different level 〉 98 %, average recovery is 99.3 %. Comparing with HPLC and IC respectively, t test shows there are no notable difference between CFA and the two methods.
出处
《中国烟草学报》
EI
CAS
CSCD
2008年第1期13-15,共3页
Acta Tabacaria Sinica
关键词
烟草
氨
连续流动分析
tobacco
ammonia
continuous flow analysis
