Analytical chemistry of the sulphur acids*1

Szekeres, Lászloó

doi:10.1016/0039-9140(74)80061-5

Cited by 79 publications

(32 citation statements)

References 252 publications

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“…Most research into the separation of sulfur anions by CE has focused on sulfide, thiosulfate, sulfite, and sulfate, with separation being generally achieved with co-EOF through the addition of an EOF modifier to the BGE. For such separation mode, the order of migration of species is generally S 2 O 2À 3 f SO 2À 4 f HS -f SO 2À 3 [19]. Separations of other sulfur anions, such as polysulfides or higher sulfur-oxygen species, are too scanty to warrant inclusion of their migration order in the above [6].…”

Section: Introductionmentioning

confidence: 96%

Capillary electrophoretic separation of inorganic sulfur–sulfide, polysulfides, and sulfur‐oxygen species

Petre¹,

Larachi²

2006

J of Separation Science

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A CE protocol was developed for the identification and separation of inorganic polysulfides simultaneously with other inorganic sulfur-bearing species coexisting in aqueous hydrosulfide/sulfur solutions. The electrophoretic separation of thiosulfate, sulfate, hydrosulfide, sulfite, tetrathionate, and polysulfides was achieved at pH values between 8.2 and 12.2. The peaks attributed to the polysulfide species were strongly sensitive to pH. CE analysis of hydrosulfide/sulfur solutions at different pH values permitted possible identification of two forms of polysulfides: S4(2-) and S3(2-). Upon exposure to air at ambient temperature, thiosulfate was the main oxidation product of hydrosulfide/sulfur solutions mainly in the first 60 min, when hydrosulfide was rapidly consumed. Analysis of the oxidation reaction products provided retrospectively tentative evidence that the peaks separated and identified as tri- and tetrasulfide may be ascribed to polysulfides.

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Section: Introductionmentioning

confidence: 96%

Capillary electrophoretic separation of inorganic sulfur–sulfide, polysulfides, and sulfur‐oxygen species

Petre¹,

Larachi²

2006

J of Separation Science

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“…52 ' 53 Sodium sulfide is available as 45 wt percent solution at an equivalent cost of $21/kg-mole thiosulfate, assuming that 2 moles of thiosulfate can be obtained from 1 mole of sulfide. Sodium polysulfide can be prepared by dissolving elemental sulfur (powdered) in concentrated sodium hydroxide 52 or sodium sulfide solution.…”

Section: Sources Of Thiosulfatementioning

confidence: 99%

Thiosulfate as an Oxidation Inhibitor in Flue Gas Desulfurization Processes: A Review of R&D Results

Rochelle

Owens

Chang

et al. 1986

Journal of the Air Pollution Control Association

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“…Hydrogen cyanide reacts fast with inorganic polysulfides (S n 2-) and their protonated forms, polythionates (S n O 6 2-) with n > 3 and colloidal sulfur, but not with the solid (rhombic) sulfur (Karchmer 1970;Szekers 1974;Luthy and Bruce 1979;Koh 1990; Kamyshny in press). …”

Section: Introductionmentioning

confidence: 99%

Improved cyanolysis protocol for detection of zero‐valent sulfur in natural aquatic systems

Kamyshny

2009

Limnology & Ocean Methods

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We propose a novel protocol for detection of reactive zero-valent sulfur (ZVS) in natural aquatic samples including seawater. Reaction with hot potassium cyanide at slightly acidic conditions recovers ZVS from colloidal fraction of particulate elemental sulfur, polysulfides (S n 2-), and their protonated forms. Preconcentration by partial evaporation of the sample and separation of thiocyanate anions by high-performance liquid chromatography on the C30 reverse phase column modified with poly(ethylene glycol) followed by spectrophotometric detection at 220 nm wavelength allows us to detect reactive ZVS with detection limit of 3 nmol L -1 for fresh water samples and 6 nmol L -1 for seawater samples. Storage at 4°C for 6 weeks does not change the concentration of thiocyanate in the sample by more than 10%.

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Analytical chemistry of the sulphur acids*1

Cited by 79 publications

References 252 publications

Capillary electrophoretic separation of inorganic sulfur–sulfide, polysulfides, and sulfur‐oxygen species

Capillary electrophoretic separation of inorganic sulfur–sulfide, polysulfides, and sulfur‐oxygen species

Thiosulfate as an Oxidation Inhibitor in Flue Gas Desulfurization Processes: A Review of R&D Results

Improved cyanolysis protocol for detection of zero‐valent sulfur in natural aquatic systems

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