目的以一测多评法建立香加皮提取物中7种C21甾体皂苷成分的高效液相色谱分析方法。方法采用Capcell Pak C_(18)色谱柱,流动相乙腈-0.2%甲酸水溶液梯度洗脱,检测波长263 nm,以杠柳苷A(PSA)为内参物,建立其与杠柳苷K(PSK)、杠柳苷R(WJ53)...目的以一测多评法建立香加皮提取物中7种C21甾体皂苷成分的高效液相色谱分析方法。方法采用Capcell Pak C_(18)色谱柱,流动相乙腈-0.2%甲酸水溶液梯度洗脱,检测波长263 nm,以杠柳苷A(PSA)为内参物,建立其与杠柳苷K(PSK)、杠柳苷R(WJ53)、杠柳苷E(WJ521)、杠柳苷D(PSD)、杠柳苷Q(WJ33)和杠柳苷O(WJ32)的相对校正因子,并进行含量计算,实现一测多评,并将一测多评法测定结果与外标法测定结果对比,验证一测多评法的准确性。结果 PSA与PSK、WJ53、WJ521、PSD、WJ33和WJ32的相对校正因子分别为0.867、0.867、0.847、0.994、0.922和1.029。采用校正因子计算的含量值与外标法实测值之间没有显著性差异。结论该方法准确可靠,简便可行,可作为香加皮提取物中间体多指标成分测定的质量控制方法。展开更多
A C-band RF pulse compressor is in development at SINAP It comprises of two resonant cavities,two mode convertors and a 3 dB power divider.TE_(0.1.15)mode is selected for obtaining higher quality factor Q_0 of the RF ...A C-band RF pulse compressor is in development at SINAP It comprises of two resonant cavities,two mode convertors and a 3 dB power divider.TE_(0.1.15)mode is selected for obtaining higher quality factor Q_0 of the RF pulse compressor cavities,so that the power gain factor can be 3.2,which is supposed to multiply the RF power from 50 MW to 1 60 MW.In this paper,we report our work on C-band RF pulse compressor,namely the design simulation and cold test results.展开更多
文摘目的以一测多评法建立香加皮提取物中7种C21甾体皂苷成分的高效液相色谱分析方法。方法采用Capcell Pak C_(18)色谱柱,流动相乙腈-0.2%甲酸水溶液梯度洗脱,检测波长263 nm,以杠柳苷A(PSA)为内参物,建立其与杠柳苷K(PSK)、杠柳苷R(WJ53)、杠柳苷E(WJ521)、杠柳苷D(PSD)、杠柳苷Q(WJ33)和杠柳苷O(WJ32)的相对校正因子,并进行含量计算,实现一测多评,并将一测多评法测定结果与外标法测定结果对比,验证一测多评法的准确性。结果 PSA与PSK、WJ53、WJ521、PSD、WJ33和WJ32的相对校正因子分别为0.867、0.867、0.847、0.994、0.922和1.029。采用校正因子计算的含量值与外标法实测值之间没有显著性差异。结论该方法准确可靠,简便可行,可作为香加皮提取物中间体多指标成分测定的质量控制方法。
基金the Accelerator Laboratory of Tsinghua University for experiment supports
文摘A C-band RF pulse compressor is in development at SINAP It comprises of two resonant cavities,two mode convertors and a 3 dB power divider.TE_(0.1.15)mode is selected for obtaining higher quality factor Q_0 of the RF pulse compressor cavities,so that the power gain factor can be 3.2,which is supposed to multiply the RF power from 50 MW to 1 60 MW.In this paper,we report our work on C-band RF pulse compressor,namely the design simulation and cold test results.
