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Guang Pu Xue Yu Guang Pu Fen Xi. 2006 Aug;26(8):1530-2.

[Determination of metacycline in mixture sample by synchronous-derivative fluorimetry].

[Article in Chinese]

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College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China.


A new synchronous-derivative fluorimetric method for the determination of metacycline (MTC) in the presence of oxytetracycline (OTC) is proposed. The degradation products of MTC in 0.1 mol x L(-1) NaOH are strongly fluorescent. The addition of cetyltrimethylammonium bromide (CTMAB) enhances the fluorescence intensity 2-fold. The synchronous fluorescence spectra of MTC and OTC degradation products do not interfere with each other under the condition that deltalambda = 100 nm. MTC can be determined in the presence of OTC in the range of OTC+MTC ratio of 1+116-1+1. The recoveries of MTC in the mixture sample are in the range of 94%-102%.

[Indexed for MEDLINE]

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