凯氏氮

不同植物去除高锰酸钾指数、凯氏氮、总磷的最佳pH值不同，但都有缓冲水体pH值的作用，其中以水芹的作用最大。

Each aquatic plant has different suitable pH value for remove of potassium permanganate index , kjeldahl nitrogen , total phosphorus , four plants all have abirritation to pH value . The wild rice stem has most strong function to reduce pH value .

水质凯氏氮标准样品的研究

Research about Standard Samples of Water Quality-Determination of Kjeldahl Nitrogen

藻体总凯氏氮（TKN）和TP含量分别为5.75±0.20%和1.5±0.22%。

The contents of total Kelvin-nitrogen ( TKN ) and TP of harvested algal biomass were ( 5.75 ±) 0.20 % and 1.56 ± 0.22 % .

凯氏氮和底泥总氮的简易测定法

Simple Method for Determination of Kjeldahl Nitrogen and Total Nitrogen

水杨酸钠-次氯酸钠比色法测定食品中总凯氏氮的研究

Study on Salicylate-hypochlorite Colorimetric Determination of Total Kjeldahl Nitrogen

凯氏氮量测定的简易蒸馏装置

A simple distillation device for determination of nitrogen content

凯氏氮测定中的有关消解问题

Dissolving Problems Relating to Detecting K - nitrogen

提出了水质凯氏氮标准样品的研究方法。

Research methods about standard samples of water quality determination of Kjeldahl nitrogen were put forward .

自由基清除剂正丁醇对焦化废水中氨氮、凯氏氮和有机氮的超声降解效果影响并不显著。

OH radical scavenger has little affection on the degradation effect of the nitrogen of the carbonization effluent .

电导度、生化需氧量、有机氮、凯氏氮及总氮的平均污染浓度则随雨季初期→中期→末期的顺序而升高；

The mean concentrations of conductivity , biochemical oxy-gen demand , organic nitrogen , total kjeldahl nitrogen , and total nitrogen deteriorated in order of initial - , middle - , and final - wet season .

针对武汉市水体污染状况进行调查研究，分析结果表明武汉的河流湖泊均已受到严重的污染，水体中的污染物有凯氏氮、总磷、高锰酸钾指数等，且这些污染物主要来源于生活污水。

It is showed that rivers and lakes in Wuhan city have been heavily polluted , the main pollutants in water body are Kaye nitrogen , TP and potassium permanganate index and these pol ˉ lutants primary come from domestic sewage .

TiP2-CuSO4用于凯氏定氮测定食品中蛋白质总量

TiO_2-CuSO_4 as Kjeldahl Digestion Catalyst in Determination of Total Protein in Foods

快速凯氏定氮仪与纳氏试剂光度法测定NH3-N的精密度及总不确定度比较

The accuracy and systematic uncertainty of NH_3-N results comparing the photometry method and quick analyzing method

并用凯氏定氮法、傅里叶变换红外光谱和1H核磁共振确定了合成产物的化学结构。

Micro-kjeldahl method , 1H NMR and FTIR were employed to characterize the chemical structure of the as-synthesized products . A series of polyureas with various chain extenders were prepared .

利用Gerhardt凯氏定氮仪测定凯氏氮

Determination of Kjeldahl nitrogen using Gerhardt device

研究了HAT、催化剂NaOH、反应温度和反应时间对合成阳离子香豆胶（CFG）的影响，用凯氏定氮法测定了CFG的取代度。

The effects of HAT , catalyst NaOH , temperature and reaction time on degree of substitution ( DS ) were investigated . DS of CFG was determined through micro Kjeldahl method .

方法对猪肋骨进行一系列理化处理，制成脱蛋白骨，并对其进行组织学、扫描电镜、红外光谱、X射线衍射分析，X射线能量散射分析、微量凯氏定氮及力学性能测定。

Methods Deproteinized bones were made through a series of physicochemical treatment from pig ribs and were analyzed with histology , scanning electron microscopy , infrared spectrum , X-ray diffraction analysis , X-ray energy scattering analysis , microdose Kjeldahl determination and mechanical analysis .

蛋白质测定方法主要有考马斯亮蓝法（CBBG-250）、紫外吸收法（UV）和凯氏定氮法。

There are mainly three methods in the determination of proteins : Coomassie brilliant blue G-250 ( CBB G-250 ), UV absorption ( UV ) and micro-Kjeldahl .

介绍了Gerhardt凯氏定氮仪的工作原理及方法，验证了其测定凯氏氮的准确性。

The use method and principle of Gerhardt device were introduced and its accuracy for determination of Kjeldahl nitrogen was verified .

方法应用四唑盐（MTT）比色法分析细胞增殖，倒置显微镜观察细胞形态学变化、凯氏定氮法测定细胞蛋白质的含量、流式细胞术定量检测细胞凋亡。

Methods Cell proliferation was examined by MTT assay technique , cell morphological transformation was observed by inverted microscope and the content of cell protein was determined by Kjeldahl definition nitrogen method while cell apoptosis was precisely detected by flow cytometry .

结合实际应用，提出了在Gerhardt凯氏定氮仪测定过程中存在的问题及解决方法。

Determination of Kjeldahl nitrogen using Gerhardt device The Dow Chemical Company Its solution for existent problems was proposed through the practical application .

应用KDY-9820凯氏定氮仪测定羊肉中挥发性盐基氮，通过与半微量定氮法对比及精密度实验，结果表明KDY-9820全自动定氮仪能简便、快速、准确地测定肉中的挥发性盐基氮。

TVB-N of mutton was analysed by KDY-9820 type automatic azotometer , through compared with kjeldahl and studied the precision , accuracy and inaccuracy of KDY-9820 type automatic azotometer .

采用正交试验设计确定凯氏法定氮样品消化中的CuSO4·5H2O、K2SO4、浓H2SO4的最佳用量来建立一种样品蛋白质含量的快速测定法。

To set up a fast digestion measuring method for protein in samples , the optimum quantity on the protein digestion with CuSO_4 · 5H_2O , K_2SO_4 and H_2SO_4 by L_9 ( 3 ~ 3 ) orthogonal design with Kjeldahl were studied .

研究了饲料粗蛋白质快速测定方法，利用高氯酸和硒粉相结合缩短凯氏定氮法消化时间，使饲料样品在1min左右消化成无色或黄色溶液。

For rapidly determining crude protein in feeds perchloric acid and selenium powder were used in Kjeldahl N determination to reduce the digestion time of samples , which were digested into a colorless or yellow solution in about one minute .

提高凯氏定氮法蛋白质测定速度的研究

The Studying on Improving the Determination Rate of Protein with Kjeldahl

自动凯氏定氮仪快速测定青贮饲料中的氨态氮

Rapid Determination of Ammoniacal Nitrogen in Silage by Automatic Kjeldahl Apparatus

总氮含量测定采用凯氏定氮法。

Micro - Kjeldahl method was developed to determine total nitrogen .

盐析法分离制得牡蛎蛋白，经凯氏定氮法测得牡蛎粗提物中蛋白含量为38.6%；

Oyster protein was extracted from fresh oyster using salting-out method .

微量凯氏定氮法测定蛋白质含量；

Protein was assayed by Kjeldah method for nitrogen determination ;

凯氏定氮法是测定橡胶中氮含量的常规分析方法。

The Kjeldahl is a general analysis method for determining nitrogen in rubber .