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Title: Iron fractionation for corrosion products from natural gas pipelines by continuous-flow sequential extraction
Authors: Nattikarn Kaewkhomdee
Chatvalee Kalambaheti
Somrudee Predapitakkun
Atitaya Siripinyanond
Juwadee Shiowatana
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 1-Oct-2006
Citation: Analytical and Bioanalytical Chemistry. Vol.386, No.3 (2006), 363-369
Abstract: The forms and quantities of iron species in corrosion product samples from natural gas pipelines were examined, using a continuous-flow sequential extraction system. Sequential extraction consists of four steps that dissolve water soluble iron (FeSO4), acid soluble iron (FeCO3), reducible iron (Fe-(oxyhydr)oxides) and oxidisable iron (FeS2) fractions, respectively. Selectivity of extracting reagents for particular iron species was evaluated by determination of co-extracted anions, using ion chromatography, and evolved CO2, using indirect flame atomic absorption spectrometer (FAAS). Iron was found predominantly in the reducible fraction (61-99%), indicating that Fe-(oxyhydr)oxides are the major constituents of the corrosion products. © Springer-Verlag 2006.
ISSN: 16182650
Appears in Collections:Scopus 2006-2010

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