CAJ | 학술논문

选取珍珠鸡、贵妃鸡、雉鸡及标准物共40个样品，分别采用凯氏法和杜马斯法测定各样本中的氮含量，分析误差来源，比较这2种方法测定结果的差异性，以确立一种快速无污染的氮测定方法。结果显示，在40个样品的测定值间并无明显差异。凯氏法的测定值平均变异系数（CV ）为0.887％，最高值1.925％＜5％。杜马斯法测定值平均变异系数（CV ）为0.483％，最高值1.218％＜5％。凯氏法大部分测定值略低于杜马斯法测定值，2种方法测定值比值为K／D＝0.985±0.0165。根据数据统计结果，杜马斯法可以作为珍禽肌肉氮测定的常规检测方法。
선취진주계、귀비계、치계급표준물공40개양품，분별채용개씨법화두마사법측정각양본중적담함량，분석오차래원，비교저2충방법측정결과적차이성，이학립일충쾌속무오염적담측정방법。결과현시，재40개양품적측정치간병무명현차이。개씨법적측정치평균변이계수（CV ）위0.887％，최고치1.925％＜5％。두마사법측정치평균변이계수（CV ）위0.483％，최고치1.218％＜5％。개씨법대부분측정치략저우두마사법측정치，2충방법측정치비치위K／D＝0.985±0.0165。근거수거통계결과，두마사법가이작위진금기육담측정적상규검측방법。
This article aimed to examine the nitrogen content of 40 N-containing samples ,include the muscle of guinea fowls ,royal chicken , pheasants and 4 standard reference materials ,determined by Kjeldahl and Dumas methods ,respectively .Meanwhile based on a thorough analysis of error source and a detailed comparison of the results of these two methods ,a quick and no polluted method which can determine the nitrogen contentwas suggested .The results showed that no significant differences were found in the quantitative results .With the Kjeldahl determination , the average coefficient of variation was 0.887% and the maximum of variance coefficient was 1.925% ,less than 5% .The average coefficient of variation was 0.483% and the maximum of variance coefficient was 1.218% ,less than 5% ,which produced with the Dumas method .The nitrogen content obtained from the samples with Dumas method was higher than those with Kjeldahl method .The ratio of measured results which obtained by means of above two methods was 0.985 ± 0.0165 .It was concluded that Dumas method can be used as a regular method for deter-mination of nitrogen contents in the muscle of rare birds .