Analysis of disparate levels of anions of relevance to corrosion processes

Kelly, Robert G.; Brossia, C. Sean; Cooper, Kevin R.; Krol, Jim

doi:10.1016/0021-9673(96)00223-3

Cited by 26 publications

(8 citation statements)

References 16 publications

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“…A detection limit of 10 ppb was reported for sulfide under optimized conditions. For direct UV detection, an approach was also reported which com-bines matrix matching of electrolyte and sample with detection for analysis of anions at low levels in the presence of about 1 M concentration of sulfate or chloride [79]. This was achieved by the use of a dominant anion in the BGE and applied to corrosion studies.…”

Section: Sulfurmentioning

confidence: 98%

“…In the indirect detection of sulfur oxoanions, employed because of their weak UV absorption, a chromate BGE is most commonly used, as is typical for separations of anions by CE [74, 75, 80 -83]. However, for the determination of anions exhibiting strong reducing behaviour better results were reported with the use of a BGE containing pyromellitate [76,77,81], naphthalenetrisulfonate [76], sulfate [78], or chloride [79].…”

Section: Sulfurmentioning

confidence: 99%

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Speciation of oxidation states of elements by capillary electrophoresis

Trojanowicz¹,

Poboży

2003

J of Separation Science

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Speciation of oxidation states of elements by capillary electrophoresisProgress made in the last five years in the application of capillary electrophoresis methods to chemical speciation of elements is reported on the basis of over 100 literature references. The main trends observed include development of new on-and offcapillary derivatization methods, application of new detection methods, and especially coupling of CE separation systems to powerful atomic spectroscopy and mass spectrometry instruments with various ionization techniques, providing either a sensitive element-specific detection method or a third dimension for high performance separation. Besides numerous CZE and MEKC capillary electrophoresis methods only very few examples of CE speciation with capillary electrochromatography can be found. Concerning the chemical forms of elements determined, the new procedures developed are mostly focused on redox speciation of various oxidation states of elements, metal-bound high molecular compounds, and organometallic species.

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Section: Sulfurmentioning

confidence: 98%

Section: Sulfurmentioning

confidence: 99%

Speciation of oxidation states of elements by capillary electrophoresis

Trojanowicz¹,

Poboży

2003

J of Separation Science

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“…Also, the surfactant counterion can interfere in the separation. It has been shown that the system peak induced by the bromide present in tetradecyltrimethylammonium bromide interferes with thiosulfate determination, whereas the same surfactant in the hydroxide form does not interfere [20].…”

Section: Capillary Electrophoresismentioning

confidence: 99%

Stationary phases for capillary electrophoresis and capillary electrochromatography

Liu

2001

Electrophoresis

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An overview of the most recent developments in column technology employed in capillary electrophoresis (CE) and capillary electrochromatography (CEC), mainly for the separation of small molecules and ions, is presented. Particular emphasis is laid on permanent coating. The wall modification methods in CE include covalent modification, adsorbed coatings and polymeric coatings, while those in CEC include packed columns, open-tubular columns and fritless columns. A short discussion on the characterization and selectivity of the bonded phases is also given.

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“…Capillary electrophoretic methods for speciation of sulfur species have been applied to environmental [30], stainless steel corrosion solution [35], and waste samples [24,32]. Application of CE to the quality control of processes in the paper industry has enabled determination of a variety of ions containing sulfur (S 2 , $2032 , SO42 , SO32 ) in Kraft process liquors [19,25,26,28].…”

Section: Introductionmentioning

confidence: 99%

“…Sodium sulfate [32,34] or sodium chloride [35] electrolytes have been used for determination of sulfur species in samples with high matrix concentrations of sulfate and chloride. Direct UV detection at 229 nm or 214 nm provided the best sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Speciation of sulfur-containing anions by use of capillary electrophoresis

2002

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SummaryOptimization of a CE method with indirect UV detection for speciation of suJfur-containing anions is described. Sensitivity, selectivity, and separation using a chromate background electrolyte (the electrolyte most often used for inorganic anions) and a pyromelhtate electrolyte are compared. The pyromellitate electrolyte is recommended because its use results in better sensitivity for the ions analyzed. The composition of the electrolyte was 2.25 mM pyromellitic acid, 6.5 mM NaOH, 0.75 mM hexamethonium hydroxide, and 1.6 mM triethanolamine, pH 10. Separation of seven sulfur-containing anions with indirect detection at 254 nm was achieved in one run in less than 7 min.

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Analysis of disparate levels of anions of relevance to corrosion processes

Cited by 26 publications

References 16 publications

Speciation of oxidation states of elements by capillary electrophoresis

Speciation of oxidation states of elements by capillary electrophoresis

Stationary phases for capillary electrophoresis and capillary electrochromatography

Speciation of sulfur-containing anions by use of capillary electrophoresis

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