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Xu Jialiang, Yang Qinghua, Dong Shanshi, Yu Rugu. Studies on the Elimination of Interfering Absorption in Spectrophotometry of Pharmaceutical Preparations Ⅰ.The Application of Dual Wavelength Spectrophotometry to the Determination of Caffeine in the Compound Injection of Quinine.[J]. Journal of China Pharmaceutical University, 1982, (2): 44-50.
Citation: Xu Jialiang, Yang Qinghua, Dong Shanshi, Yu Rugu. Studies on the Elimination of Interfering Absorption in Spectrophotometry of Pharmaceutical Preparations Ⅰ.The Application of Dual Wavelength Spectrophotometry to the Determination of Caffeine in the Compound Injection of Quinine.[J]. Journal of China Pharmaceutical University, 1982, (2): 44-50.
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Studies on the Elimination of Interfering Absorption in Spectrophotometry of Pharmaceutical Preparations Ⅰ.The Application of Dual Wavelength Spectrophotometry to the Determination of Caffeine in the Compound Injection of Quinine.

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  • The present paper is concerned with the application of dual wavelength spectrophotometry to the determination of caffeine in the compound injection of quinine by dual and single wavelength spectrophotometers. The mean recoveries were found to be 100.8±0.2% and 99.19±0.41% (at the 95% confidence level) respectively.
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