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黄芩甙的含量测定。中国药典采用紫外分光光度法(中国药典1977年版,一部818页)。但当前多数省市和地方医院缺乏进行此项测定的设备。为了解决这个问题,作者根据文献记载[中草药通讯(7):39,1979],黄酮母核中某些位置上的 H(如3,5位上)为羟基所取代,能与金属离子形成螯合物,这些络合作用在光谱上能产生明显的变化,吸收峰有一定程度的位移,使吸收带向长波移
Astragalus content determination. The Chinese Pharmacopoeia uses ultraviolet spectrophotometry (Chinese Pharmacopoeia 1977 Edition, a 818 pages). However, currently most provinces, cities and local hospitals lack the equipment for this measurement. In order to solve this problem, according to the literature [Chinese Herbal Medicine (7): 39, 1979], H (such as 3 and 5 positions) in some positions in the flavonoid nucleus is replaced by hydroxyl, which can form a chelate with metal ions. Compounds, these complexations can produce significant changes in the spectrum, the absorption peak has a certain degree of displacement, the absorption band to the long wave shift