Analytical applications of the chemical action of light

Rao, G. Gopala; Rao, V. Panduranga; Rao, Madhumati

doi:10.1016/0003-2670(56)80018-4

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…The irradiation of solutions containing lactate and Fe 3+ or UO 2 2+ in aqueous acid media involves the reduction of Fe 3+ to Fe 2+ or UO 2 2+ to U 4+ and the formation of oxidation products from lactate, mainly CO 2 and CH 3 COCH 3 . [17][18][19] The rate of lactate photooxidation in the presence of UO 2 2+ is much higher than with Fe 3+ . Therefore, when a lactate solution containing both UO 2 2+ and Fe 3+ was irradiated with visible light, the amount of Fe 2+ produced was greater than that obtained using only Fe 3+ (see Table 1).…”

Section: Basis Of the Methodsmentioning

confidence: 99%

“…The photochemical process consists of the reduction of Fe 3+ to Fe 2+ or UO 2 2+ to U 4+ , the emission of CO 2 and the formation of other oxidation products. [17][18][19] The purpose of the present investigation was to develop a simple, sensitive and rapid assay for lactate by means of a photochemical reaction coupled to a FI system. The method uses the photochemical decomposition of lactate in the presence of both UO 2 2+ and Fe 3+ , and the Fe 2+ generated was detected by measuring either the absorbance after complexation with ferrozine or the CL intensity in a luminol system in the absence of added oxidant.…”

Section: Introductionmentioning

confidence: 99%

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Flow injection determination of lactate based on a photochemical reaction using photometric and chemiluminescence detection

Pérez-Ruíz

Martı́nez-Lozano²,

Martı́n³

1999

Analyst

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Section: Basis Of the Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flow injection determination of lactate based on a photochemical reaction using photometric and chemiluminescence detection

Pérez-Ruíz

Martı́nez-Lozano²,

Martı́n³

1999

Analyst

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“…They can be easily synthesized in both aqueous and organic solvents, chemically and electrochemically. Recently, the use of aniline, pyrrole and phenyl-based polymers as sorbents in solid phase extraction technique has been demonstrated (6). Polypyrrole was applied for extraction of phenol and chlorophenols (6), while applicability of polyaniline was investigated for the preconcentration and speciation of mercury (7) as well as for determination of Cd, Cu, Pb and Sb in potassium iodide medium in biological matrices, while poly(m-phenyldiamine) microparticles were used for recovery of lead ions (8).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the use of aniline, pyrrole and phenyl-based polymers as sorbents in solid phase extraction technique has been demonstrated (6). Polypyrrole was applied for extraction of phenol and chlorophenols (6), while applicability of polyaniline was investigated for the preconcentration and speciation of mercury (7) as well as for determination of Cd, Cu, Pb and Sb in potassium iodide medium in biological matrices, while poly(m-phenyldiamine) microparticles were used for recovery of lead ions (8). Due to the rapidly increasing application of polymer chelating ligands in analytical chemistry, the present study is undertaken with the following specific objectives:…”

Section: Introductionmentioning

confidence: 99%

Adsorption Study of Metal Ions on Electrochemically Synthesized Poly-(ortho-phenylenediamine)

Etorki

Rais

2013

ECS Trans.

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The present work deals with the study of uptake behaviour of Cd(II), Pb(II), and Zn(II) ions by electrochemically synthesized Poly-(ortho-phenylenediamine) (POPD) using batch equilibration technique with both single and binary mixtures. The effect of the various parameters such as electrochemical synthesis method, physical oxidation state of the polymer, polymer thickness, solution pH and metal ion concentration on the adsorption, kinetics and efficiency were investigated.The results showed very broad concentration range of the metal ions from (0.2 to 20 mg/L) can be adsorbed on the polymer at pH = 6.6 (efficiently >98%). The adsorption capacity of the polymer to different concentrations of metal ions was evaluated as the milligram of metal ions by one gram of various forms of the polymer. The DC conductivity measurements were also employed on the solid polymer before and after adsorption of metal ions. The experimental adsorption date was fitted to different mathematical isotherms to estimate the binding constant of metal ions with the polymer in both single and mixed ion solutions.

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“…A mercury cathode can be used to reduce U(VI) to U(IV) electrolytically and quantitatively [42]. Reduction can also be achieved through a photochemical reaction with alcohol [43], ether [44], or lactic acid [45]. Finally, U(IV) can also be obtained by reduction of uranyl nitrate with rongalite (CH 2 O⋅NaHSO 2 ⋅2H 2 O) in nitric acid [46].…”

Section: Trivalent Uraniummentioning

confidence: 99%

Removal of uranium from aqueous wastes using electrically charged carbon nanofibers

Stover¹

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The presence of aqueous uranium wastes is a problem in the United States and their treatment/disposal is desirable. Treatment methods have been developed but result in concentration opposed to conversion to a disposable form. This technique involves recovery of uranium as a solid, providing an advantage over other methods. The technique utilizes carbon nanofibers as electrodes which successfully electrosorb uranium ions. Fibers with varying surface characteristics were evaluated in the removal process and all were determined to be equally and extremely effective. Various experimental parameters were evaluated including applied potential, pH, and flow rate. The critical applied potential at which significant removal is achieved is between-0.3 and-0.4 V. Decreasing pH hinders the electrosorption process while increasing it enhances the process. As expected, an increase in flow rates results in decreased removal. It was determined that cyclic loading/unloading increased fiber performance and a capacity of at least 5.45 g uranium /g carbon can be achieved. These results illustrate that this technique can be effectively implemented to solve current waste management problems.

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Analytical applications of the chemical action of light

Cited by 13 publications

References 5 publications

Flow injection determination of lactate based on a photochemical reaction using photometric and chemiluminescence detection

Flow injection determination of lactate based on a photochemical reaction using photometric and chemiluminescence detection

Adsorption Study of Metal Ions on Electrochemically Synthesized Poly-(ortho-phenylenediamine)

Removal of uranium from aqueous wastes using electrically charged carbon nanofibers

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