OBJECTIVE To discuss the feasibility of determining enantiomers by the combination of high performance liquid(HPLC)and thin layer chromatography scannning(TLCS)with an example of L-synephrine in Citrus aurantii extract.
目的以枳实提取物中昔奈福林(L-辛弗林)的含量测定为例,探讨高效液相色谱法结合薄层色谱扫描测定旋光对映体含量的可行性。
This paper uses the method of the minimum two multiplication of the curve matches ,to acquire the density of the unknown cane sugar in the rotation light experment.
本文用曲线拟合的最小二乘法求旋光实验中未知溶液的浓度 ,并由这种方法的原理可知 ,用这种方法求得的数据能够具有最小的误差。
As it is difficult to judge straightly the left-handed rotation and right-handed rotation of the unknown solution by using the common visual round graduated dial of the optical rotation instruments in the experiment,this paper puts forward the methods of judging further the left-handed rotation and right-handed rotation of the solution,i.
鉴于用实验室常用的目测圆盘旋光仪的刻度盘,直接判断未知溶液左旋右旋有一定难度,该文提出了减小浓度法和液体长度(样品管长度)变化法(进一步判断溶液左旋右旋的方法),讨论了对旋光仪的零位误差修正方法,证明了采用半阴法测量旋光度时选用标准现象的灵敏度,解释了旋光现象中可能产生的变旋现象的原理及其相应的解决方法。
The behavior of optical rotation in electrorheological (ER) fluid was investigated.
根据光波在介质中的传播理论 ,由麦克斯韦方程出发 ,对非均相结构电流变液导出在外电场与光场交互作用下旋光角 ψ与入射线偏振光振动方向与外加电场方向间夹角θ及 ξ(取决于电流变液材料本身及外加电场强度 )的函数关系式。
The study on acetoin crystallization dimer showed that the yield of acetoin-dimer was affected by the optical rotation of acetoin.
对乙偶姻二聚体结晶的研究表明,乙偶姻的旋光值对二聚体的结晶得率影响很大,旋光值越接近于零,结晶得率越高。
An equivalent model of the twisted nematic liquid crystal light valve s mechanism of the optical activity;
扭曲向列型液晶光阀旋光机理的等效模型
Muller matrix for the rotation character of λ/4 quartz wave-plate is deduced through matrix optic,and the character is described by means of poincare sphere.
利用光学矩阵的方法推导了石英晶体旋光特性的Muller矩阵表示 ,并将此表示用邦加球来描述。