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二氯甲烷-无水乙醇混合溶剂溶解聚丙交酯微球,一阶导数紫外分光光度法测定5-氟尿嘧啶或醋酸地塞米松的含量。以一阶导数光谱5-氟尿嘧啶277nm和醋酸地塞米松266nm波长处的零谷距作为定量指标,线性关系良好,测定方法简便、快捷、准确。
Poly (lactide - co - glycolic acid) beads were dissolved in dichloromethane / ethanol mixture and the first derivative UV spectrophotometry was used to determine the content of 5 - fluorouracil or dexamethasone acetate. The first derivative spectra of 5-fluorouracil 277nm and dexamethasone acetate 266nm wavelength zero valley distance as a quantitative index, a good linear relationship, the determination method is simple, fast and accurate.