Silver (III) as an oxidative titrant Determination of some sugars, carboxylic acids and inorganic ions

Jaiswal, Pooja; Yadava, K. L.

doi:10.1016/0039-9140(70)80071-6

Cited by 64 publications

(65 citation statements)

References 2 publications

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“…DPA is a powerful oxidizing agent, and has been used for the oxidation of various organic and inorganic species. 11,31,32 DPA played a strong oxidizing role with luminol, and some drugs were capable of enhancing the CL reaction. 15 In the present study, the maximum CL in the presence and absence of thiram and aminocarb containing nitrogen appeared at a 610 nm, and a much higher CL peak was observed in the presence of thiram and aminocarb, indicating that Ru(II) is the luminophore.…”

Section: Reaction Mechanismmentioning

confidence: 99%

Determination of Thiram and Aminocarb Pesticides in Natural Water Samples Using Flow Injection with Tris(2,2′-bipyridyl)-ruthenium(II)-diperiodatoargentate(III) Chemiluminescence Detection

Asghar¹,

Yaqoob²,

Haque

et al. 2013

ANAL. SCI.

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A simple and sensitive flow-injection (FI) method is reported for the determination of thiram and aminocarb pesticides in natural water samples based on the strong enhancing effects of these pesticides on the tris(2,2′-bipyridyl)ruthenium(II)-diperiodatoargentate(III) (Ru(bipy)3 2+ -DPA) chemiluminescence (CL) system. Under the optimum experimental conditions, the CL intensity was linear over the range of 1.0 -1000 and 1.0 -10000 ng mL -1 (R 2 = 0.9998 (n = 7) and 0.9994 (n = 11)) for thiram and aminocarb, respectively, with relative standard deviations (RSDs; n = 3) in the range 1.0 -2.6%. The limits of detection (S/N = 3) were 0.1 ng mL -1 for both pesticides with injection throughputs of 150 h -1 . The key chemical and physical variables (reagent concentrations, flow rates, sample volume, PMT voltage) were optimized and potential interferences investigated. The method was successfully applied to natural water samples and the results obtained were not significantly different (95% confidence interval) from results obtained by the previously reported FI-CL and HPLC methods. Thiram could be determined in the presence of aminocarb using Triton X-100. The possible CL reaction mechanism is also discussed briefly.

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Section: Reaction Mechanismmentioning

confidence: 99%

Determination of Thiram and Aminocarb Pesticides in Natural Water Samples Using Flow Injection with Tris(2,2′-bipyridyl)-ruthenium(II)-diperiodatoargentate(III) Chemiluminescence Detection

Asghar¹,

Yaqoob²,

Haque

et al. 2013

ANAL. SCI.

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“…The use of complexes as good oxidizing agents in analytical chemistry has been reported. 5 The oxidation of a few of organic compounds and metals in lower oxidation state by Ag(III) has also been performed, 1 but no further information on the kinetics is available. Because Ag(III) is in the highest oxidation state and the reaction is complicated in such reaction system, it is important to have a further study on it, and such investigation will certainly provide us with more kinetic parameters and theoretical foundation for the design of reaction route in the organic synthesis and quantitative analysis of analytical chemistry.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mechanism of Oxidation of Some Diols by Dihydroxydiperiodatoargentate(III) in Alkaline Medium

Huo

et al. 2006

Chin. J. Chem.

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The kinetics of oxidation of ethylene glycol and 1,3-butylene glycol by dihydroxydiperiodatoargentate(III) in alkaline medium have been studied by spectrophotometry in the range of 298.2-318.2 K. It is shown that the reaction was first order with respect to each reductant and Ag(III), and k obs increased with an increase of [OH -]. A plausible mechanism of reaction involving a pre-equilibrium of adduct formation between complex and reductants was proposed, which could be applied to explain all experimental phenomena, and the activation parameters of the ratedetermining step have been also calculated.

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“…16 -19 A two-step, single-electron-transfer mechanism when DPA reduced was well established as a way to explain the formation of radicals and the initiation. However, now, the use of potassium ditelluratoargentate(III) (DTA) as an oxidizing agent is well known and has been extensively studied in micrometric determinations 20 and in kinetic studies of the oxidations of some organic compounds. [21][22][23] Commonly, it is believed that the mechanism of oxidation by DTA is a two-electron-transfer process without the production of intermediate radicals.…”

Section: Introductionmentioning

confidence: 99%

Grafting of methyl methacrylate onto sodium alginate initiated by potassium ditelluratoargentate(III)

Liu

Yang

et al. 2005

J of Applied Polymer Sci

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Sodium alginate (SA) was graft-copolymerized with methyl methacrylate in an alkali aqueous solution with potassium ditelluratoargentate(III) (DTA) as the initiator. Graft copolymers with both a high grafting efficiency (Ͼ90%) and a high percentage of grafting were obtained, which indicated that the DTA-SA redox pair was an efficient initiator for this grafting. The grafting parameters, including total conversion, grafting efficiency, and percentage grafting, were evaluated comparatively. The dependence of these parameters on temperature and time, monomer concentration, initiator concentration, and SA backbone concentration was also investigated. The overall activation energy of this grafting was calculated as 37.50 kJ/mol. Proof of grafting was obtained from gravimetric analysis and IR spectra. A tentative mechanism involving a two-step, single-electrontransfer process of DTA is proposed to explain the generation of radicals and the initiation of grafting. Some basic properties of the grafted copolymer were studied by instrumental analyses, including thermogravimetry, X-ray diffraction, and scanning electron microscopy. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1688 -1694, 2005

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Silver (III) as an oxidative titrant Determination of some sugars, carboxylic acids and inorganic ions

Cited by 64 publications

References 2 publications

Determination of Thiram and Aminocarb Pesticides in Natural Water Samples Using Flow Injection with Tris(2,2′-bipyridyl)-ruthenium(II)-diperiodatoargentate(III) Chemiluminescence Detection

Determination of Thiram and Aminocarb Pesticides in Natural Water Samples Using Flow Injection with Tris(2,2′-bipyridyl)-ruthenium(II)-diperiodatoargentate(III) Chemiluminescence Detection

Kinetics and Mechanism of Oxidation of Some Diols by Dihydroxydiperiodatoargentate(III) in Alkaline Medium

Grafting of methyl methacrylate onto sodium alginate initiated by potassium ditelluratoargentate(III)

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