目的:测定七鞭回春乐胶囊中制首乌2、3、5、4-四羟基二苯乙烯-2O-B-D葡萄糖苷的含量。方法:采用高效液相色谱法,色谱柱:Aglinet C 18;流动相:乙腈-水(18:82);流速:1.0ml/分钟;柱温:35℃;检测波长:320nm。结果:2、3、5、4-四羟基二苯乙烯...目的:测定七鞭回春乐胶囊中制首乌2、3、5、4-四羟基二苯乙烯-2O-B-D葡萄糖苷的含量。方法:采用高效液相色谱法,色谱柱:Aglinet C 18;流动相:乙腈-水(18:82);流速:1.0ml/分钟;柱温:35℃;检测波长:320nm。结果:2、3、5、4-四羟基二苯乙烯-2O-B-D葡萄糖苷在0.04~0.4? g/ml范围内峰面积与浓度呈良好的线性关系。平均回收率为99.67%。结论:该方法可靠,重现性好,可用于七鞭回春乐胶囊的质量控制。展开更多
The solid-liquid equilibrium data for a ternary system of 4-hydroxybenzaldehyde (3) + 3-bromo-4-hydroxybenzaldehyde (2) + 3,5-dibromo-4-hydroxybenzaldehyde (1) were determined with differential scanning calorimetry (D...The solid-liquid equilibrium data for a ternary system of 4-hydroxybenzaldehyde (3) + 3-bromo-4-hydroxybenzaldehyde (2) + 3,5-dibromo-4-hydroxybenzaldehyde (1) were determined with differential scanning calorimetry (DSC).The data were obtained through the method of determining the solid-liquid equilibrium data for the pseudo-binary solution.The solid-liquid equilibrium data of the ternary system showed that the mixture was a eutectic system with mole fractions xl=0.2445,x2=0.3883,x3 =0.3672,and Teu=338.5 K.The corresponding eutectic type phase diagram was also presented.The data were correlated by the Ott’s equation.With interaction parameters from binary systems,the Wilson equation was extended to correlate the solid-liquid equilibrium data of the ternary system and the root mean square deviation of temperature was only 0.97 K.It demonstrates that the Wilson equation predicts the solid-liquid equilibrium for the ternary system with fair accuracy.展开更多
文摘目的:测定七鞭回春乐胶囊中制首乌2、3、5、4-四羟基二苯乙烯-2O-B-D葡萄糖苷的含量。方法:采用高效液相色谱法,色谱柱:Aglinet C 18;流动相:乙腈-水(18:82);流速:1.0ml/分钟;柱温:35℃;检测波长:320nm。结果:2、3、5、4-四羟基二苯乙烯-2O-B-D葡萄糖苷在0.04~0.4? g/ml范围内峰面积与浓度呈良好的线性关系。平均回收率为99.67%。结论:该方法可靠,重现性好,可用于七鞭回春乐胶囊的质量控制。
文摘The solid-liquid equilibrium data for a ternary system of 4-hydroxybenzaldehyde (3) + 3-bromo-4-hydroxybenzaldehyde (2) + 3,5-dibromo-4-hydroxybenzaldehyde (1) were determined with differential scanning calorimetry (DSC).The data were obtained through the method of determining the solid-liquid equilibrium data for the pseudo-binary solution.The solid-liquid equilibrium data of the ternary system showed that the mixture was a eutectic system with mole fractions xl=0.2445,x2=0.3883,x3 =0.3672,and Teu=338.5 K.The corresponding eutectic type phase diagram was also presented.The data were correlated by the Ott’s equation.With interaction parameters from binary systems,the Wilson equation was extended to correlate the solid-liquid equilibrium data of the ternary system and the root mean square deviation of temperature was only 0.97 K.It demonstrates that the Wilson equation predicts the solid-liquid equilibrium for the ternary system with fair accuracy.