Journal
ANALYTICA CHIMICA ACTA
Volume 580, Issue 1, Pages 9-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2006.07.049
Keywords
post chemiluminescence; Ce(IV); sodium sulfite; atropine sulfate
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A new post chemiluminescence (PCL) reaction was observed when atropine sulfate was injected into the reaction mixture after the finish of CL reaction of Ce(IV) and sodium sulfite. The possible mechanism for the PCL reaction was discussed via the investigation of the CL kinetic characteristics, the CL spectra, the UV absorption spectra and the fluorescence spectra of some related substances. The flow injection PCL method for the determination of atropine sulfate was established. The relative standard deviation (R.S.D.) was 2.8% (n = 11, c = 5.0 x 10(-6) g mL(-1)). The PCL intensity responded linearly to the concentration of atropine sulfate in the range 1.0 x 10(-6) to 5.0 x 10(-5) g mL(-1) with a linear correlation of 0.9947. The detection limit was 4 x 10(-7) g mL(-1) atropine sulfate. The method had been applied to the determination of atropine sulfate in the tablets and the results were consistent with the method of Chinese pharmacopoeia. 0 2006 Elsevier B.V. All rights reserved.
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