摘要
目的 :研究磷酸盐缓冲液 pH值对利福平滴眼液吸收的影响。 方法 :采用紫外分光光度法 ,检测波长为 2 2 0～ 4 90nm。结果 :pH7.0磷酸盐缓冲液作溶剂能较好的测出最大吸收 ,pH7.8磷酸盐缓冲液作溶剂 ,在 2 5 5nm波长处的最大吸收不易测出。结论 :应以 pH7.0磷酸盐缓冲液作溶剂 ,能取得满意结果。
Objective: To choose the phosphate buffer with proper pH value as the solvent.Method: UV spectropholometry was used, the wavelength range was from 220 to 490 nm.Result: The phosphate buffer at a pH value of 7.0 could be used as the solvent to measure the maximum absorption while that at a pH value of 7.8 can not be used as the solvent to measure the maximum absorption at the wavelength of 255 nm.Conclusion: A satisfactory result can be gained when the phosphate buffer at a pH value of 7.0 is used as the solvent.
出处
《中国药师》
CAS
2004年第4期277-278,共2页
China Pharmacist
