目的测定宣痹洗剂中羟基红花黄色素A的含量。方法采用高效液相色谱法,以羟基红花黄色素A含量为指标,通过正交试验确定正丁醇萃取的最佳条件并测定其含量。结果宣痹洗剂中羟基红花黄色素A的最佳正丁醇萃取条件为正丁醇用量60 m L,萃取4次...目的测定宣痹洗剂中羟基红花黄色素A的含量。方法采用高效液相色谱法,以羟基红花黄色素A含量为指标,通过正交试验确定正丁醇萃取的最佳条件并测定其含量。结果宣痹洗剂中羟基红花黄色素A的最佳正丁醇萃取条件为正丁醇用量60 m L,萃取4次,每次振摇50 s,各因素影响顺序为正丁醇用量>萃取次数>振摇时间,测得宣痹洗剂中羟基红花黄色素A的含量为0.39μg/m L,平均回收率为97.06%,RSD=1.4%(n=6)。结论本研究建立的正丁醇萃取方法与含量测定方法简便快速、精密度高,可用于该制剂的质量控制。展开更多
Based on experimental results, a new convection heat transfer correlation for adiabatic diesel engines is established in the form of analogue equation. Some characteristic parameters in the correlation are defined wit...Based on experimental results, a new convection heat transfer correlation for adiabatic diesel engines is established in the form of analogue equation. Some characteristic parameters in the correlation are defined with special consideration to make it more suitable for adiabatic diesel engines.展开更多
文摘目的测定宣痹洗剂中羟基红花黄色素A的含量。方法采用高效液相色谱法,以羟基红花黄色素A含量为指标,通过正交试验确定正丁醇萃取的最佳条件并测定其含量。结果宣痹洗剂中羟基红花黄色素A的最佳正丁醇萃取条件为正丁醇用量60 m L,萃取4次,每次振摇50 s,各因素影响顺序为正丁醇用量>萃取次数>振摇时间,测得宣痹洗剂中羟基红花黄色素A的含量为0.39μg/m L,平均回收率为97.06%,RSD=1.4%(n=6)。结论本研究建立的正丁醇萃取方法与含量测定方法简便快速、精密度高,可用于该制剂的质量控制。
文摘Based on experimental results, a new convection heat transfer correlation for adiabatic diesel engines is established in the form of analogue equation. Some characteristic parameters in the correlation are defined with special consideration to make it more suitable for adiabatic diesel engines.