Good day,colleagues.On behalf of the 60,000 members of the American Library Association(ALA),I bring you greetings.The American Library Association has members in over 80 countries,including China,and it has a long hi...Good day,colleagues.On behalf of the 60,000 members of the American Library Association(ALA),I bring you greetings.The American Library Association has members in over 80 countries,including China,and it has a long history of working with colleagues in different countries to improve library services around the world.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
文摘Good day,colleagues.On behalf of the 60,000 members of the American Library Association(ALA),I bring you greetings.The American Library Association has members in over 80 countries,including China,and it has a long history of working with colleagues in different countries to improve library services around the world.
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。
