Chemiluminescence Determination of Metoclopramide

Post-column detection of benzenediols and 1,2,4-benzenetriol based on acidic potassium permanganate chemiluminescence

“…The CL mechanisms of acidified potassium permanganate oxidation with some organic compounds are still not very clear so far. Some excited or active intermediates, such as triplet dimer of carbon dioxide [30], energy transfer to fluorophore [31,32], triplet state of a Mn(II) complex [33,34], or an autocatalytic effect [35], have been speculated, whereas most of the speculations had no convincing supporting evidences. Therefore, the details of the mechanisms remain to be investigated further.…”

“…A sulfuric acid solution 1.0 M was chosen as the optimum sulfuric concentration in KMnO 4 solution. Previous investigations showed that some sensitizers, such as surfactants [25], fluorescing compounds [32], formaldehyde [31], formic acid [36], significantly enhance the CL reactions. In this work, nine potential CL enhancers, including rhodamine 6G or B, uranine, riboflavin, polyethylene 400, sodium dodecyl sulfate, ethyldimethylcetylammonium bromide, formic acid and formaldehyde, were tested.…”

Chemiluminescence behavior of sodium hydrogen carbonate in the potassium permanganate-hydrogen peroxide reaction

“…Despite the wide analytical application of potassium permanganate chemiluminescence, the mechanism of the reaction and the emitting species are not fully elucidated. In the published papers, the reported emitting species of KMnO 4 system can be grouped as follows: excited state Mn(II) ions [14], singlet oxygen [15], analyte oxidation products [16], and compounds which accept energy from an excited intermediate of the reaction [17]. The spectrum of acidic potassium permanganate chemiluminescence has a single broad band with a maximum intensity between 610 nm and 750 nm [18].…”

Flow injection-chemiluminescence determination of amoxycillin using potassium permanganate and formaldehyde system

“…tion of amoxycillin have been reported (14)(15)(16). However, the detection limit of the method with luminolperiodate as the reagents (14), at the 10 −7 mol/L level, is not low enough for clinical analysis.…”

“…However, the detection limit of the method with luminolperiodate as the reagents (14), at the 10 −7 mol/L level, is not low enough for clinical analysis. Although the method with NH 4 Ce(SO 4 ) 2 -rhodamine 6G as the reagents (15) has high sensitivity, this method is timeconsuming, due to the fact that amoxycillin must be pretreated prior to analysis, although quinine sulphate can increase the CL signal in the reaction between KMnO 4 and amoxycillin to give a detection limit of 5.5 × 10 −8 mol/L (16). In this paper, we report that in acidic medium, potassium permanganate can oxidize amoxycillin and produce a weak CL signal.…”