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采用紫外差示分光光度法测定复方制剂“耳安”滴耳液中氧氟沙垦、甲硝唑的含量。浓度线性范围:氯氟沙星4.801~14.404μg/ml,RDS0.788%;甲硝唑4.817~11.24μg/ml,RSD0.647%。
Determination of oxyfluorine and metronidazole in “Er’an” ear drops of compound preparation by ultraviolet differential spectrophotometry. Linearity of concentration range: 4.801 ~ 14.404μg / ml, RDS0.788%; metronidazole 4.817 ~ 11.24μg / ml, RSD0.647%.