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  • 1
    Electronic Resource
    Electronic Resource
    Electrogenerated chemiluminescence using solution phase and immobilized tris(4,7-diphenyl-1,10-phenanthrolinedisulfonic acid)ruthenium(II) (1998)
    Springer
    Microchimica acta 130 (1998), S. 55-62 
    Details
    ISSN: 1436-5073
    Keywords: electrogenerated chemiluminescence ; immobilized reagent ; flow injection analysis ; polypyrrole ; polymer film ; modified electrode ; ruthenium ; electropolymerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Electrogenerated chemiluminescence (ECL) with tris(4,7-diphenyl-1,10-phenanthrolinedisulfonic acid)rathenium(II) (RuBPS) in solution and immobilized on an electrode surface is investigated. Flow injection analysis with a thin layer electrochemical cell modified for ECL detection is used to determine the analytical utility of solution phase RuBPS and RuBPS immobilized in a cationic polypyrrole derivative. The solution phase reaction of RuBPS with oxalate is investigated with regard to the dependence of ECL emission on RuBPS concentration, carrier stream flow rate, and pH. In the parameter range studied, ECL intensity is not linear with the concentration of RuBPS in the sample. A maximum ECL intensity is observed with a RuBPS concentration of approximately 250 μM. Slower linear velocities give greater ECL intensities which is the opposite of what is observed for Ru(bpy) 3 3+ and oxalate. Greater ECL intensity is observed at lower pHs for oxalate and at higher pHs for proline. RuBPS ECL with oxalate yields a working curve with a linear range from 0.1–100 μM oxalate. Solution phase ECL is observed for RuBPS and other amines such as NADH, proline, tripropylamine, and antibiotics including streptomycin and gentamicin. RuBPS is also immobilized by electrochemical polymerization of 1-methyl-3-(pyrrol-1-ylmethyl)pyridinium chloride (MPP) in the presence of RuBPS. This polymer-modified electrode yields ECL for oxalate and for amines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01254591
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  • 2
    Electronic Resource
    Electronic Resource
    Immobilized and solid-state reagent systems for luminol chemiluminescence in flow systems (1988)
    Springer
    Microchimica acta 96 (1988), S. 239-247 
    Details
    ISSN: 1436-5073
    Keywords: chemiluminescence ; luminol ; immobilized reagent ; solidstate ; flow injection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract To facilitate the application of luminol chemiluminescence in analysis, several approaches are investigated to provide the reagents in immobilized or solid-state format. The approaches are demonstrated with flow injection systems. Luminol is covalently bound or adsorbed to the surface of small support particles and packed into flow-through reactor/detector cells. The catalyst can be either covalently immobilized heme-containing species or a positively-biased electrode in an electrochemical cell. Peroxide can be obtained electrochemically at a negatively-biased electrode. These immobilized reagent systems can be combined to yield single-channel flow systems for determination of hydrogen peroxide (0.15μM detection limit) or luminol (0.1 nM detection limit).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01236108
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Stopped-flow analysis of Ru(bpy)33+chemiluminescent reactions (1998)
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 13 (1998), S. 85-90 
    Details
    ISSN: 0884-3996
    Keywords: stopped-flow ; chemiluminescence ; multicomponent analysis ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: The stopped-flow technique was employed to measure chemiluminescent emission from the reaction of a mixture of oxalate and proline with a chemiluminescence reagent, tris(2,2′-bipyridine)ruthenium(III), or Ru(bpy)33+. Ru(bpy)33+ is a versatile reagent and is often used in bioanalytical applications, including the detection of certain drugs and their metabolites, for example. Unfortunately, Ru(bpy)33+ has not yet been fully examined as a possible chemiluminescence reagent for simultaneous kinetic determinations. In this work, a differential reaction rate method, based on simple least squares regressions of the pseudo-first order decay data, was used to resolve two compounds, oxalate and proline, reacting simultaneously with Ru(bpy)33+. Our results indicate that stopped-flow analyses with Ru(bpy)33+ could provide a viable method for simultaneous determinations of unresolvable analytes of environmental and pharmaceutical importance. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 4
    Electronic Resource
    Electronic Resource
    Flow injection chemiluminescence study of acridinium ester stability and kinetics of decomposition (1993)
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 8 (1993), S. 25-31 
    Details
    ISSN: 0884-3996
    Keywords: Acridinium ester ; chemiluminescence ; flow injection ; stability ; decomposition ; kinetics ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Decomposition of phenyl acridinium-9-carboxylate is monitored using electrogenerated chemiluminescence in a flow system. The formation of the pseudobase from the acridinium ester [AE] is described by rate = k′1[AE] + k″1[AE][OH-]0.5, where k′1 = 0.020 ± 0.006 s-1 and k″1 = 2.1 ± 0.8 (L/mol)-0.5 s-1. Irreversible decomposition of the pseudobase is described by rate = k′2[AE][OH-], where k′2 = 20.1 ± 3.8 (L/mol s). These kinetic equations, plus measurement of variation in emission intensity for constant acridinium ester concentration, are used to predict the resulting emission intensity v. pH behaviour given various contact times (in the 0.25 to 25 s range) for the acridinium ester to be in an alkaline solution prior to initiation of the chemiluminescence reaction.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bio.1170080106
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    Paper (German National Licenses)
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