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1)  nitrogen determination method
定氮法
1.
Determination of capsaicin in rotenone-capsaicin suspension by nitrogen determination method
定氮法测定鱼藤酮辣椒碱悬浮剂中辣椒碱含量
2)  nitrogen fixation process
固定氮法
3)  Kjeldahl
凯氏定氮法
1.
Several Problems for Determining Protein by Kjeldahl;
关于凯氏定氮法测定蛋白质的几个问题
2.
The Kjeldahl is a general analysis method for determining nitrogen in rubber.
凯氏定氮法是测定橡胶中氮含量的常规分析方法。
3.
[Method] The total nitrogen(N) content was determined with Kjeldahl to study the influences of temperature,digesting time and sample dosage on the course of digesting wild H.
[方法]用凯氏定氮法测定总氮含量,研究温度、消化时间及样品用量对野生竹红菌消化过程的影响。
4)  Kieldahl method
凯氏定氮法
1.
Kieldahl method and Spectrophotometry method are improved for the determination of protein in Wandashan milk powders.
采用凯氏定氮法和光谱法分析测定完达山奶粉系列中蛋白质的含量。
2.
The quality of result of measurement is characterized quantitatively through the analysis of the uncertainty for determination of protein content in the food by Kieldahl method.
通过对凯氏定氮法测定食品中蛋白质含量的测量不确定度分析,对其标定结果的质量进行了定量表征。
5)  Kjeldahl method
凯氏定氮法
1.
Determination of the protein content in a water-soluble polysaccharide of caput-medusa of Ganoderma tsugae Murr by Kjeldahl method;
凯氏定氮法测定松杉灵芝子实体水溶性多糖中蛋白质含量
2.
Determination of protein content in a alkaline-soluble polysaccharide of Beer Yeast by Kjeldahl method;
凯氏定氮法测定啤酒酵母碱溶性多糖中蛋白质的质量分数
3.
Digestion of soy sauce sample by heating with microwave was studied and used in combination with the Kjeldahl method for determination of total nitrogen.
研究了凯氏定氮法测定酱油中全氮时样品的微波消解方法,进行了微波消解条件的选择及消解结果精密度试验,并与国家标准方法对比,验证了方法的准确度。
6)  Macro Kjeldahl method
开氏定氮法
1.
The limitation of the Macro Kjeldahl method for determining nitrogen in the coal is that it requires a long time and has a potential loss of nitrogen from the system, which results in low nitrogen value, or still, no detection can be achieved at all.
针对传统开氏定氮法测定煤中氮含量消化时间过长,导致测定结果偏低有时甚至测不出结果的缺陷,进行了反复地分析、研究,并对其进行了改进。
补充资料:固定氮法
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性质:使空气中的游离态氮转变为氮化合物的过程。例如在自然界中,雷电发生时,能使 氮固定为一氧化氮;土壤中的固氮菌以及与豆科植物共生的根瘤菌等,都能将氮固定为氮化合物。工业上有氰氨(基)化钙法、电弧法和合成氨法等,其中以合成氨法为最重要。

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