Optical rotation is the property of substances, rotating the plane of polarization when linearly-polarizedlight passes through such substances. This is the property which occurs specifically to optical activesubstances in which the refractive indices of right and left circularly-polarized light are different. Opticalrotation that rotate light in a clockwise direction as viewed towards the light source is defined asdextrorotation (+) and the opposite, levorotation (-).
本实验以罗红霉素对照品为分析对象,按照罗红霉素标准提高征求意见稿有关物质项下方法进行了分析。实验中分别尝试了资生堂CAPCELL PAK C18 MGII和C18 SPOLAR两款色谱柱对系统适用性溶液进行分析,如上图1、图2所示,两款色谱柱均可使罗红霉素保留时间在22分钟左右,A峰与B峰分离度、B峰与C峰分离度均大于1,谱图与标准图谱基本一致,满足标准要求。