Determination of iodide and bromide by chemiluminescence methods coupled with dynamic gas extraction

Pilipenko, A.T.; Terletskaya, A. V.; Zuĭ, O. V.

doi:10.1007/bf00482390

Cited by 18 publications

(14 citation statements)

References 5 publications

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“…This has been achieved by either the on-line generation of bromine from an acidic bromate solution (43) or the dynamic gaseous extraction of bromine from a bromide solution into a carrier gas stream (44). The latter method was applied to the determination of bromide in river, mineral and sea waters with a detection limit of 1.3 x lop3 mg/L.…”

Section: Other Speciesmentioning

confidence: 99%

Flow injection assays with chemiluminescence and bioluminescence detection — A review

Lewis

Price

Worsfold

1993

J. Biolumin. Chemilumin.

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This paper reviews publications that combine the technique of flow injection (FI) with chemiluminescence (CL) and bioluminescence (BL) detection, from the earliest papers in 1979/80 to mid-1992, and refers exclusively to reactions occurring in solution. Air-segmented systems and liquid chromatography with CL detection are not considered unless FI has been used to pre-optimize the system. The applications have been categorized in terms of the type of CL reaction; there are separate entries for luminol, peroxyoxalate, other CL reactions and BL reactions. Each of the four sections includes a table of applications that lists the analyte, the nature of the reaction, the sample matrix and the limit of detection.

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Section: Other Speciesmentioning

confidence: 99%

Flow injection assays with chemiluminescence and bioluminescence detection — A review

Lewis

Price

Worsfold

1993

J. Biolumin. Chemilumin.

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“…7 When iodide is oxidized into iodine, since iodide is not CLactive, subsequent separation from the oxidant used which could interfere with the CL determination is also required. 2,3,8 One of the effective methods of preconcentration and separation of iodine from such interferents as oxidant and metallic species is its extraction with a suitable organic solvent. 2,3 However, some problems, e.g., back extraction and evaporation of solvents, may crop up if conventional aqueous media are used To eliminate the use of chlorinated hydrocarbons, we have improved the method for the flow-injection (FI) determination of iodine based on the chemiluminescence reaction of iodine with luminol in a chloroform-free reversed micellar medium of the surfactant cetyltrimethylammonium chloride (CTAC) using a mixture of 1-hexanol-cyclohexane as a bulk solvent.…”

Section: Introductionmentioning

confidence: 99%

An Improved Method for the Flow-Injection Determination of Iodine Using the Luminol Chemiluminescence Reaction in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane

et al. 2006

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Amphiphilic molecules (surfactants) when dissolved in a bulk organic non-polar solvent form organized assemblies called reverse micelles when an appropriate concentration of surfactants, the critical micellar concentration, is reached. 1 The structure of a reverse micelle is the inverse prototype of the normal micellar structure. The polar head groups of the surfactant molecules are in contact with the tiny water pool (containing the associated counter ions) in the core of the reverse micelle while the hydrophobic chains are directed outward into the bulk organic solvent. In our previous work, chemiluminescence (CL) generation was observed upon mixing iodine with luminol dispersed in the carbonate-buffered water pool of the reversed micelle of cetyltrimethylammonium chloride (CTAC). 2 Absorption measurements demonstrated that, on mixing of the cyclohexane solution of iodine with the CTAC reversed micellar solution, iodine could be transferred instantly and completely from the organic phase into the buffered water pool of the reverse micelle.2 On the other hand, when iodine was premixed with the reversed micellar solution containing the carbonate buffer alone and then the resulting mixture was mixed with the reversed micellar solution of luminol, no CL emission was produced. 3 In the CL reaction of luminol with iodine, hypoiodous acid and the iodite ion have been proposed as oxidants in usual alkaline aqueous solutions. 4 Thus, a possible explanation would be that, on iodine uptake by the reverse micelle, these oxidizing agents may be produced initially and be present transiently at the surfactant-water pool interface, before reacting immediately with luminol anion to generate luminescence. 2,3 The chloride ion, the counter ion of CTAC, is also presumed to be available mostly at the surfactant-water pool interface, 5 and to cause its association with iodine. 6 This might facilitate the quantitative uptake of iodine by the CTAC reverse micelle. In addition, the concentration effect of iodine can be achieved by entrance of iodine into a small volume of the interfacial region in the CTAC reverse micelles, where acceleration of the luminol CL reaction seems likely due to more efficient association of luminol with the generated oxidants, resulting in the generation of more intense or higher CL signals.Several metal ions present in aqueous samples may interfere with iodine determination by using the usual aqueous phase luminol CL reaction; thus, their removal is needed by incorporating separation science techniques into the procedure. 7 When iodide is oxidized into iodine, since iodide is not CLactive, subsequent separation from the oxidant used which could interfere with the CL determination is also required. 2,3,8 One of the effective methods of preconcentration and separation of iodine from such interferents as oxidant and metallic species is its extraction with a suitable organic solvent. Yasuda Women's College, Yasuhigashi, Japan To eliminate the use of chlorinated hydrocarbons, we have improved the method for...

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“…Other methods that have been applied to the determination of iodide include isotope dilution mass spectrometry [ 143, 1441, ICP-AES (for iodide and iodate) following solvent extraction [ 1451, ICP-AES using a membrane gas-liquid separator [ 1461, and by chemiluminescent methods coupled with dynamic gas extraction [147]. In addition total iodine in brines and seawater samples has been determined by atmospheric-pressure helium microwave-induced plasma atomic emission spectrometry with continuousflow gas-phase sample introduction [ 1481.…”

Section: (A) Catalyticmentioning

confidence: 99%

The determination of iodine species in environmental and biological samples (Technical Report)

Edmonds¹,

Morita²

1998

Pure and Applied Chemistry

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Republication or reproduction of this report or its storage and/or dissemination by electronic means is The determination of iodine species in environmental and biological samples (Technical Report)Abstract: Iodine is found in organic forms in plants and animals and in inorganic forms in natural water samples. Methods of identification and quantitative determination for iodine species are decided by the types of compound and the matrices in which they occur. Iodine is an essential element and specific radioimmunoassay methods have been devised for physiologically important compounds (thyroxine and related compounds) in which it is found. In addition, marine plants and animals have provided a rich source of varied and unexpected organic iodine compounds that occur, along with other organic halogen compounds, as secondary metabolites. Natural waters, particularly marine waters contain iodine chiefly in the forms of iodide and iodate. Organic iodine compounds in biological samples have been identified by classical natural products chemical techniques following their isolation, and by modem spectroscopic methods. Routine analysis of such compounds can be done by gas chromatography (GC) and high performance liquid chromatography (HPLC). Analysis of inorganic iodine species in waters is carried out by catalytic, electrochemical and spectrometric methods and by GC; possibly HPLC inductively coupled-mass spectrometry (ICP-MS) might be the method of choice in the future.

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Determination of iodide and bromide by chemiluminescence methods coupled with dynamic gas extraction

Cited by 18 publications

References 5 publications

Flow injection assays with chemiluminescence and bioluminescence detection — A review

Flow injection assays with chemiluminescence and bioluminescence detection — A review

An Improved Method for the Flow-Injection Determination of Iodine Using the Luminol Chemiluminescence Reaction in a Reversed Micellar Medium of Cetyltrimethylammonium Chloride in 1-Hexanol-Cyclohexane

The determination of iodine species in environmental and biological samples (Technical Report)

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