Publication: Iron fractionation for corrosion products from natural gas pipelines by continuous-flow sequential extraction
Issued Date
2006-09-01
Resource Type
ISSN
16182650
16182642
16182642
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2-s2.0-33748313166
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Mahidol University
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SCOPUS
Bibliographic Citation
Analytical and Bioanalytical Chemistry. Vol.386, No.2 (2006), 363-369
Suggested Citation
Nattikarn Kaewkhomdee, Chatvalee Kalambaheti, Somrudee Predapitakkun, Atitaya Siripinyanond, Juwadee Shiowatana Iron fractionation for corrosion products from natural gas pipelines by continuous-flow sequential extraction. Analytical and Bioanalytical Chemistry. Vol.386, No.2 (2006), 363-369. doi:10.1007/s00216-006-0633-9 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/22983
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Title
Iron fractionation for corrosion products from natural gas pipelines by continuous-flow sequential extraction
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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.