Iron fractionation for corrosion products from natural gas pipelines by continuous-flow sequential extraction

被引：0
|
作者：
Kaewkhomdee, Nattikarn
Kalambaheti, Chatvalee
Predapitakkun, Somrudee
Siripinyanond, Atitaya
Shiowatana, Juwadee
机构：
[1] Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10400, Thailand
[2] PTT Publ Co Ltd, PTT Res & Technol Inst, Analyt & Petr Res Dept, Ayutthaya 13170, Thailand
来源：
ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2006年 / 386卷 / 02期
关键词：
corrosion product; iron fractionation; sequential extraction;
D O I：
暂无
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
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.
引用
收藏
页码：363 / 369
页数：7
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