Nouvelles méthodes de détermination des principales espèces ioniques du soufre dans les eaux naturelles

Boulègue, Jacques; Popoff, G.

doi:10.1051/water/19791002083

Cited by 16 publications

(4 citation statements)

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“…Methods for ZVS quantitative detection can be divided into five main groups: (1) Extraction or dilution with organic solvent in order to solubilise ZVS; (2) Conversion to a measurable species by chemical reaction (sometimes after pre-concentration by one of the methods of group (1); (3) Titrations (Szekeres 1974, Boulegue andPopoff 1979); (4) Electrochemical detection (Boulegue 1977, Boulegue et al 1982, Luther et al 1985, Rozan et al 2000a; (5) X-ray near edge absorption spectroscopy (XANES) (Prange et al 1999, 2002, Pickering et al 2001). …”

Section: Review Of Methods For Zvs Determinationmentioning

confidence: 99%

Protocol for Quantitative Detection of Elemental Sulfur and Polysulfide Zero‐Valent Sulfur Distribution in Natural Aquatic Samples

Kamyshny

Borkenstein

Ferdelman

2009

Geostandard Geoanalytic Res

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A HPLC‐based protocol has been developed for the determination of zero‐valent sulfur (ZVS) speciation, including solid, colloidal elemental sulfur and individual inorganic polysulfides in natural aquatic samples. The protocol includes four experimental procedures: (1) determination of polysulfide speciation by rapid single‐phase derivatisation with methyl trifluoromethanesulfonate; (2) determination of the sum of polysulfide and colloidal sulfur by reaction with hydrogen cyanide (cyanolysis); (3) determination of total zero‐valent sulfur by treatment with zinc chloride followed by extraction with chloroform; and (4) chromatographic determination of polythionates without sample pre‐treatment. With proper sampling and preservation techniques in the field or on board ship, this combination of methods allowed the quantitative determination of: (a) individual polysulfide species; (b) dispersed colloidal sulfur; (c) dispersed solid elemental sulfur; and (d) tetra‐, penta‐ and hexathionates. With minor modification, the method could be expanded to include other polythionates. Sixteen various wet chemical and liquid chromatographic methods were tested on nine synthetic reference samples (including solid elemental sulfur, colloidal elemental sulfur, inorganic polysulfides and polythionates) to establish the optimal protocol. The protocol was further evaluated by analysing the zero‐valent sulfur content in microbially‐produced sulfur and in sulfur from two natural samples of sulfide‐rich seawater from tidal flats pools of the Wadden Sea (Germany).

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Section: Review Of Methods For Zvs Determinationmentioning

confidence: 99%

Protocol for Quantitative Detection of Elemental Sulfur and Polysulfide Zero‐Valent Sulfur Distribution in Natural Aquatic Samples

Kamyshny

Borkenstein

Ferdelman

2009

Geostandard Geoanalytic Res

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“…Attempts to experimentally determine polysulfide distributions in marine pore waters have also been made. These include titrimetry (Szekers, 1974;Boulegue and Popoff 1979), voltammetry (Luther et al 1985;Rozan et al 2000a,b;Luther et al 2001), or conversion to measurable species such as elemental sulfur, thiosulfate or thiocyanate (see Kamyshny et al, 2009 for review). The direct and unequivocal determination of the distribution of individual polysulfides and their dynamics in any marine system, however, does not to our knowledge exist.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of zero-valent sulfur species including polysulfides at seep sites on intertidal sand flats (Wadden Sea, North Sea)

Kamyshny

Ferdelman

2010

Marine Chemistry

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“…Titrimetry. Iodometric titration of polysulfides has been used to detect the sum of inorganic polysulfides in concentrations of hundredths of micromoles per liter. , …”

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confidence: 99%

Method for the Determination of Inorganic Polysulfide Distribution in Aquatic Systems

et al. 2006

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Inorganic polysulfides have significant technological importance, and their environmental role is gradually being unraveled. But despite their importance, there is still no method for quantification of the individual members of the polysulfide family in nonsynthetic samples. The method is based on fast, single-phase derivatization with methyl trifluoromethanesulfonate followed by one of three modes of sample treatment depending on polysulfide concentration. Under the most aggressive preconcentration treatment involving liquid-liquid extraction, solvent evaporation to dryness, dissolution in n-dodecane, and finally HPLC-UV analysis of the dimethylpolysulfane distribution, the minimum detection limits of the individual polysulfides are in the range 15-70 nM. The method was demonstrated for the analysis of synthetic solutions, natural groundwater, polysulfide fortified seawater, and surface water and for time tracing of the distribution of the individual polysulfides during the oxidation of hydrogen sulfide by hydrogen peroxide. The observed speciation was evaluated by comparison with the theoretical distribution of polysulfides at equilibrium with sulfur precipitate showing that the dominant polysulfides' (i.e., tetra- to hexasulfide) concentrations agree well with the predicted distribution (90% of the results fall within less than 30% deviation from the predicted values), whereas up to 3-fold deviation was observed for the less abundant trisulfide and octasulfide species.

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Nouvelles méthodes de détermination des principales espèces ioniques du soufre dans les eaux naturelles

Cited by 16 publications

References 0 publications

Protocol for Quantitative Detection of Elemental Sulfur and Polysulfide Zero‐Valent Sulfur Distribution in Natural Aquatic Samples

Protocol for Quantitative Detection of Elemental Sulfur and Polysulfide Zero‐Valent Sulfur Distribution in Natural Aquatic Samples

Dynamics of zero-valent sulfur species including polysulfides at seep sites on intertidal sand flats (Wadden Sea, North Sea)

Method for the Determination of Inorganic Polysulfide Distribution in Aquatic Systems

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