Determination of sulfides and application to shale oil analysis

D'Alonzo, Raphael P.; Carpenter, Alan; Siggia, Sidney.; Uden, Peter C.

doi:10.1021/ac50024a039

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Sodium metaperidate was found to be a good reagent to oxidize thioethers completely to sulfoxides without any further oxidation to sulfones. The reaction conditions are mild, with quantitative oxidation occurring at low temperatures (0−25 °C) . In contrast to the report of D'Alonzo and Carpenter, the reaction here is under reflux, and the general procedure calls for a reaction time of 30 h. Because many other functional groups such as benzyl, phenyl, and carboxyl do not interfere, the method is sensitive.…”

Section: Resultsmentioning

confidence: 96%

“…The reaction conditions are mild, with quantitative oxidation occurring at low temperatures (0-25 °C). 7 In contrast to the report of D'Alonzo and Carpenter, the reaction here is under reflux, and the general procedure calls for a reaction time of 30 h. Because many other functional groups such as benzyl, phenyl, and carboxyl do not interfere, the method is sensitive. The concentrations of the reagent sodium metaperiodate and the thioether sample are not critical in this procedure, as quantitative oxidation of the thioethers to the sulfoxides can be accomplished over a large range of concentrations without the production of more highly oxidized species, such as sulfones.…”

Section: Reaction Conditionsmentioning

confidence: 95%

“…Simultaneously, the periodate was reduced to iodate, which could be quantitatively precipitated, filtered, and dissolved in ammonium hydroxide, and the resulting solution was analyzed for its silver content by atomic absorption spectrometry. 7 Past procedures for thioether analysis have depended heavily upon both chemical and instrumental methods with a strong emphasis on oxidative approaches. The determination of thioethers employing oxidation with bromine has been accomplished using a variety of oxidizing reagents, such as bromine water, bromatebromide mixtures, and electrically generated bromine.…”

Section: Introductionmentioning

confidence: 99%

“…D'Alonzo and Carpenter reported that organic thioethers can be oxidized to the corresponding sulfoxides using aqueous sodium metaperiodate. Simultaneously, the periodate was reduced to iodate, which could be quantitatively precipitated, filtered, and dissolved in ammonium hydroxide, and the resulting solution was analyzed for its silver content by atomic absorption spectrometry …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis

Qiu

Han

Cheng

et al. 2005

Ind. Eng. Chem. Res.

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A method was developed to analyze the distribution of thioether compounds in model sulfur compounds by oxidation and ICP-AES analysis and then applied to analyze hydrotreated base oil. Model thioethers were oxidized to the corresponding sulfoxides by tetrabutylammonium periodate and sodium metaperiodate, and the reduced periodate was quantitatively precipitated in the form of silver iodate. The silver iodate was transformed to AgNO 3 after calcination and the addition of concentrated nitric acid. The concentration of Ag + was determined by ICP-AES, and the concentration of thioethers was calculated with a relational equation. Aliphatic thioethers could be oxidized to sulfoxides under reflux by tetrabutylammonium periodate, and all thioethers could be oxidized to sulfoxides under reflux by sodium metaperiodate, and then the contents of aliphatic thioethers and total thioethers were determined in sample oil. The thioethers in Kelamayi hydrotreated transformer base oil were analyzed by the same method. Research indicated that this method has a high sensitivity and good selectivity.

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Section: Resultsmentioning

confidence: 96%

Section: Reaction Conditionsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis

Qiu

Han

Cheng

et al. 2005

Ind. Eng. Chem. Res.

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Sulphur and lead determination in petroleum products by raioisotope induced X‐ray fluorescence

Szöghy

Poliquin

1981

X-Ray Spectrometry

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A simple additive method, based on 55Fe and 109Cd source induced fluorescence in a helium environment, is presented for sulphur and lead determintion in petroleum products. Although the density of the matrix influences the X‐ray yields, the similarity of photon attenuation in water and petroleum products can be explotied. It is shown that routine system calibration can be achieved by the use of inorganic chemicals dissolved in water instead of organic additives in products. The low pressure helium flow suppresses the argon X‐rays, provides a good background region and increases the detection sensitivity for sulphur.

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Microdetermination of divalent sulphur in aliphatic compounds by visual titrimetry, potentiometry, and atomic absorption spectrometry

Hassan

Eldesouki

1979

Mikrochim Acta

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Determination of sulfides and application to shale oil analysis

Cited by 4 publications

References 20 publications

Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis

Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis

Sulphur and lead determination in petroleum products by raioisotope induced X‐ray fluorescence

Microdetermination of divalent sulphur in aliphatic compounds by visual titrimetry, potentiometry, and atomic absorption spectrometry

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