Citation:
FU Shenghui, LIU Jian, LIU Shaopu. Fluorescence Quenching Reaction of Ceftriaxone with Acriflavine and Its Analytical Application[J]. Chinese Journal of Applied Chemistry,
;2014, 31(7): 865-870.
doi:
10.3724/SP.J.1095.2014.30472
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In pH 2.09~5.02 Britton-Robinson(BR) buffer medium,ceftriaxone(CTRX) reacts with acriflavine(AF) to form an 1:1 ion association complex,which results in quench of the fluorescence of acriflavine.The measurement wavelength of fluorescence quenching is located at λex/λem=266 nm/506 nm.The linear range for CTRX is from 0.056 mg/L to 5.0 mg/L,and its detection limit is 0.016 mg/L.The fluorescence spectra characteristics,the optimum reaction conditions and the effect of additive substances were investigated.The composition of ion-association complexes was discussed also.Based on the ion-association reaction,a high sensitive,simple and rapid method was proposed for the determination of CTRX.The method was applied for the determination of CTRX in human serum and urine samples with satisfactory results.
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Keywords:
- ceftriaxone,
- acriflavine,
- fluorescence quenching
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