Determination of sulfur oxides formed during the S(IV) oxidation in the presence of iron
Autor: | Boštjan Podkrajšek, Janja Turšič, Irena Grgić |
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Rok vydání: | 2002 |
Předmět: |
Environmental Engineering
Dithionate Health Toxicology and Mutagenesis Iron Inorganic chemistry Ion chromatography chemistry.chemical_element Chemical reaction Chemistry Techniques Analytical Catalysis chemistry.chemical_compound Environmental Chemistry Sulfites Sulfate Sulfur Compounds Tetrabutylammonium hydroxide Atmosphere Sulfates Public Health Environmental and Occupational Health Water Oxides General Medicine General Chemistry Chromatography Ion Exchange Pollution Sulfur Oxygen Quaternary Ammonium Compounds Solutions chemistry Reagent Oxidation-Reduction |
Zdroj: | Chemosphere. 49(3) |
ISSN: | 0045-6535 |
Popis: | The reaction products (i.e., sulfate (SO42−) and dithionate (S2O62−)) of S(IV) oxidation in the presence of iron(III) under different experimental conditions were investigated. Ion-interaction chromatography was used for the separation of sulfate and dithionate using tetrabutylammonium hydroxide (TBAOH) as an ion-pair reagent. The chromatographic method was optimized by varying the composition of the mobile phase (i.e., concentration of TBAOH, acetonitrile and Na2CO3) and by varying the flow rate of the mobile phase. The method was successfully applied to the determination of dithionate formed during the S(IV) oxidation in the presence of Fe(III). In air-saturated solutions sulfate was observed as the only product, while in N2-saturated solutions dithionate was also determined, but it is the minor reaction product and represents about 4% of the total amount of oxidized HSO3− under the studied conditions. |
Databáze: | OpenAIRE |
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