[Objective] This study aimed to establish a method for determining the content of Astragaloside IV in Yupingfeng oral solution.[Method] The HPLC-ELSD method was adopted.The chromatographic column was Venusil MP(4.6 m...[Objective] This study aimed to establish a method for determining the content of Astragaloside IV in Yupingfeng oral solution.[Method] The HPLC-ELSD method was adopted.The chromatographic column was Venusil MP(4.6 mm × 150 mm,5 μm).The mobile phase was acetonitrile-water(35∶65).The ELSD evaporator tube temperature was 65 ℃.N2 was used as the carrier gas(pressure,30 psi).[Result] When the content of Astragaloside IV ranged from 0.5 to 5.0 μg,the Astragaloside IV content showed a good linear relationship with peak area(r=0.999,n=6).The average recovery was 96.36%,and the RSD was 2.46%.[Conclusion] This method is accurate and reliable,and can be applied in the quality control of Yupingfeng oral solution.展开更多
[Objective] A method for the determination of chlorogenic acid, macranthoidin B and dipsacoside B in Flos Lonicera by high performance liquid chromatography(HPLC) with evaporative light scattering detection(ELSD) ...[Objective] A method for the determination of chlorogenic acid, macranthoidin B and dipsacoside B in Flos Lonicera by high performance liquid chromatography(HPLC) with evaporative light scattering detection(ELSD) was established.[Method] The separation was carried out using a ZORBAX SB-C18 chromatographic column(4.6 mm ×250 mm, 5 μm), with a simple mobile phase of acetonitrile and0.1% formic acid. Evaporative light scattering detector was employed. [Result] The result showed that chlorogenic aicd, macranthoidin B and dipsacoside B showed good linearities in the ranges of 3.00-6.40, 4.24-9.33 and 0.40-2.00 μg with correlation coefficient of 0.999, 0.993 and 0.999, respectively. [Conclusion] The method has the advantages of simple operation, good accuracy, repeatability and separation effect and high specificity and is suitable for overall quality control of Flos Lonicera.展开更多
A HPLC-ELSD method was developed and validated for simultaneous determination of five Hetisane-type diterpenoid alkaloids in a Tibetan traditional herbal medicine, "Gebu Dilu" (Herba Delphinii), using a Kromasil C...A HPLC-ELSD method was developed and validated for simultaneous determination of five Hetisane-type diterpenoid alkaloids in a Tibetan traditional herbal medicine, "Gebu Dilu" (Herba Delphinii), using a Kromasil C18 column (250 mmx 4.6 mm, 5 gm) with the mobile phase consisting of acetonitrile and 0.1% triethylamine in gradient (detected by evaporative light scattering detector). The linear ranges of five compounds were determined and method validation was evaluated completely. The established method is rapid and accurate with high repeatability, and can be applied for the quality control of Herba Delphinii.展开更多
目的:以牛磺熊去氧胆酸和牛磺鹅去氧胆酸为指标,建立龙泽熊胆胶囊中熊胆粉的含量测定方法。方法:采用高效液相色谱串联蒸发光检测器,色谱柱为ChromCore AQ C 18(4.6 mm×250 mm,5μm),乙腈(A)-5 mmol•L^(-1)醋酸铵溶液(B)为流动相,...目的:以牛磺熊去氧胆酸和牛磺鹅去氧胆酸为指标,建立龙泽熊胆胶囊中熊胆粉的含量测定方法。方法:采用高效液相色谱串联蒸发光检测器,色谱柱为ChromCore AQ C 18(4.6 mm×250 mm,5μm),乙腈(A)-5 mmol•L^(-1)醋酸铵溶液(B)为流动相,梯度洗脱(0~40 min,25%A;40~50 min,25%A→29%A;50~80 min,29%A;80~100 min,29%A→40%A),流速1.0 mL•min^(-1),柱温30℃,ELSD漂移管温度110℃,氮流量2.5L•min^(-1)。结果:牛磺熊去氧胆酸进样量在1.069~9.57μg内、牛磺鹅去氧胆酸进样量在0.74046~7.40464μg内,进样量的对数与峰面积的对数呈良好的线性关系;仪器精密度、重复性、稳定性试验的RSD<2.0%;经低、中、高3个浓度的准确度试验考察,牛磺熊去氧胆酸的回收率为95.2%~97.7%,牛磺鹅去氧胆酸的回收率为91.9%~95.9%。测定样品42批次,牛磺熊去氧胆酸和牛磺鹅去氧胆酸的含量分别为0.18~0.43、0.10~0.44 mg•粒^(-1)。结论:本法适用于龙泽熊胆胶囊中熊胆粉的质量控制,可为完善龙泽熊胆胶囊的质量标准提供科学的依据。展开更多
目的:建立测定桔梗样品中桔梗皂苷 E 含量的方法。方法:采用 HPLC-ELSD 法,C_(18)柱(3.9mm×300mm,4μm),以乙腈-水为流动相梯度洗脱,流速1.0mL·min^(-1),ELSD 漂移管温度112℃,载气(N_2)流速3.2L·min^(-1)。结果:不同产...目的:建立测定桔梗样品中桔梗皂苷 E 含量的方法。方法:采用 HPLC-ELSD 法,C_(18)柱(3.9mm×300mm,4μm),以乙腈-水为流动相梯度洗脱,流速1.0mL·min^(-1),ELSD 漂移管温度112℃,载气(N_2)流速3.2L·min^(-1)。结果:不同产地的桔梗中均含有桔梗皂苷 E,但含量差别较大,其中以安徽青阳产含量最高(0.26%)。结论:本方法稳定、可靠,桔梗皂苷 E 可作为评价桔梗质量的指标之一。展开更多
目的:用HPLC-ELSD测定积雪草提取中积雪草苷的含量。方法:色谱柱为HiQ siL KYA—C18分析柱,流动相为乙腈-水,梯度洗脱;漂移管温度105℃;载气流速2.9L·min^-1。结果:积雪草苷在0.35—7.0μg呈良好线性关系;积雪草提取物...目的:用HPLC-ELSD测定积雪草提取中积雪草苷的含量。方法:色谱柱为HiQ siL KYA—C18分析柱,流动相为乙腈-水,梯度洗脱;漂移管温度105℃;载气流速2.9L·min^-1。结果:积雪草苷在0.35—7.0μg呈良好线性关系;积雪草提取物中积雪草苷的回收率为94.9%(RSD 1.7%)。结论:该方法简便、准确、分离效果好,无干扰,可用于积雪草提取物中积雪草苷的质量评价。展开更多
基金Supported by General Program of Science and Technology Plan of Beijing Municipal Commission of Educational(KM201410020007)~~
文摘[Objective] This study aimed to establish a method for determining the content of Astragaloside IV in Yupingfeng oral solution.[Method] The HPLC-ELSD method was adopted.The chromatographic column was Venusil MP(4.6 mm × 150 mm,5 μm).The mobile phase was acetonitrile-water(35∶65).The ELSD evaporator tube temperature was 65 ℃.N2 was used as the carrier gas(pressure,30 psi).[Result] When the content of Astragaloside IV ranged from 0.5 to 5.0 μg,the Astragaloside IV content showed a good linear relationship with peak area(r=0.999,n=6).The average recovery was 96.36%,and the RSD was 2.46%.[Conclusion] This method is accurate and reliable,and can be applied in the quality control of Yupingfeng oral solution.
基金Supported by Technology Research and Development Program of Guilin City(20130403-2)~~
文摘[Objective] A method for the determination of chlorogenic acid, macranthoidin B and dipsacoside B in Flos Lonicera by high performance liquid chromatography(HPLC) with evaporative light scattering detection(ELSD) was established.[Method] The separation was carried out using a ZORBAX SB-C18 chromatographic column(4.6 mm ×250 mm, 5 μm), with a simple mobile phase of acetonitrile and0.1% formic acid. Evaporative light scattering detector was employed. [Result] The result showed that chlorogenic aicd, macranthoidin B and dipsacoside B showed good linearities in the ranges of 3.00-6.40, 4.24-9.33 and 0.40-2.00 μg with correlation coefficient of 0.999, 0.993 and 0.999, respectively. [Conclusion] The method has the advantages of simple operation, good accuracy, repeatability and separation effect and high specificity and is suitable for overall quality control of Flos Lonicera.
基金The financial support of International Cooperation Fund from Guangdong Province,P.R.China(2008A050200005)Tibetan Medicine Quality Standardization from Tibet Department of Science(No.2007-2-10)
文摘A HPLC-ELSD method was developed and validated for simultaneous determination of five Hetisane-type diterpenoid alkaloids in a Tibetan traditional herbal medicine, "Gebu Dilu" (Herba Delphinii), using a Kromasil C18 column (250 mmx 4.6 mm, 5 gm) with the mobile phase consisting of acetonitrile and 0.1% triethylamine in gradient (detected by evaporative light scattering detector). The linear ranges of five compounds were determined and method validation was evaluated completely. The established method is rapid and accurate with high repeatability, and can be applied for the quality control of Herba Delphinii.
文摘目的:建立测定桔梗样品中桔梗皂苷 E 含量的方法。方法:采用 HPLC-ELSD 法,C_(18)柱(3.9mm×300mm,4μm),以乙腈-水为流动相梯度洗脱,流速1.0mL·min^(-1),ELSD 漂移管温度112℃,载气(N_2)流速3.2L·min^(-1)。结果:不同产地的桔梗中均含有桔梗皂苷 E,但含量差别较大,其中以安徽青阳产含量最高(0.26%)。结论:本方法稳定、可靠,桔梗皂苷 E 可作为评价桔梗质量的指标之一。
文摘目的:用HPLC-ELSD测定积雪草提取中积雪草苷的含量。方法:色谱柱为HiQ siL KYA—C18分析柱,流动相为乙腈-水,梯度洗脱;漂移管温度105℃;载气流速2.9L·min^-1。结果:积雪草苷在0.35—7.0μg呈良好线性关系;积雪草提取物中积雪草苷的回收率为94.9%(RSD 1.7%)。结论:该方法简便、准确、分离效果好,无干扰,可用于积雪草提取物中积雪草苷的质量评价。