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In the present work, a strongly chemiluminescence (CL) from the mixing of hydrogen peroxide (H 2 O 2 ), hydrogen carbonate (HCO 3− ) and CdSe/CdS quantum dots (QDs) was observed. The addition of trace amount of l-ascorbic acid into the CL system caused significant quenching luminescence intensity. Based on this phenomenon, a flow injection CL analysis system for the determination...
A flow injection method based on Ru(bpy) 32+ –PbO 2 chemiluminescence system was developed for the determination of naproxen. The factors affecting the CL intensity were performed including the amount of PbO 2 and H 2 SO 4 , pH of buffer and concentration of Ru(bpy) 32+ . Under the optimum conditions, naproxen has a linear calibration graph...
Peroxynitrous acid (ONOOH) was produced by the on-line reaction of acidified hydrogen peroxide with nitrite in a flow system, and peroxynitrite (ONOO − ) was generated from ONOOH in NaOH solution. A weak chemiluminescent (CL) emission was observed due to the production of singlet oxygen (O21) during the decomposition of ONOO − . Bilirubin and its conjugate were found to enhance the...
A chemiluminescent flow injection method based on the reaction of cortisol-21-phosphate with alkaline phosphatase (ALP) is described. The cortisol produced by the enzyme-catalyzed reaction reacts with lucigenin (N,N -dimethyl-9,9 -biacridinium dinitrate) in basic aqueous solution to give intense chemiluminescence. The method allows ALP to be determined in the range 4 10 -12 ...
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