Dual mechanism of oxidation of dl-methionine by diperiodatoargentate(III) in aqueous alkaline medium (stopped flow technique)

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

“…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.…”

“…[11][12][13] Yang and Zhang 14 have reported a flow-injection (FI)-CL method for the determination of uric acid in human serum based on the reaction of DPA with uric acid in an alkaline medium; it generates a strong CL signal with a detection limit (3σ) of 1.2 × 10 -7 mol L -1 . Yang et al 15 have reported an FI-CL method for amikacin sulfate in human serum based on its enhancement effect on a luminol-DPA CL system in an alkaline medium with a detection limit (3σ) of 1.9 × 10 -8 mol L -1 .…”

New luminol chemiluminescence reaction using diperiodatoargentate as oxidate for the determination of amikacin sulfate

“…In this paper, it is considered that the dianion (I) can be oxidized by DPA to the semidione structure shown in one of its resonance forms [reaction (4)]. [22,23,[26][27][28] The semidione (II) reacts with oxygen to give the proxy radical; the proxy radical is subsequently reduced in a fast step to give proxy anion (III) [reaction (5)]. The proxy anion decomposes to electronically excited (IV) with loss of nitrogen and then contributes CL emission [reaction (6)].…”

“…[15][16][17][18][19][20][21] Some transition metals in the highest oxidation states, such as trivalent silver, can be stabilized by chelating with suitable polydentate ligands. Diperiodatoargentate (III) (DPA) is a powerful oxidizing agent in alkaline medium, with a reduction potential of 1.74 V. [22] P. J. Rao et al [22,23] have used DPA as an oxidizing agent to study kinetics of oxidation of various organic substrates. In the later part of the twentieth century, the kinetics of oxidation of various organic and inorganic substrates were studied by Ag (III) species, which may be due to the strong versatile nature of the two electron oxidants.…”

Flow injection chemiluminescence determination of isoxicam based on diperiodatoargentate(III)-fluorescein system in a micellar medium

“…Diperiodatoargentate(III) is powerful oxidant in a medium with an appropriate pH value. The polydentate chelates of trivalent silver takes on character of strong oxidation with a redox potential of 1.74 V [20] in alkaline medium, because of their strong versatile nature of the two electron oxidants [20,21]. Although there are many reports concerning the use of diperiodatoargentate(III) as oxidant in alkaline medium, the use of diperiodatoargentate(III) in CL analysis is relatively few.…”