Discriminating bacterial from electrochemical corrosion using Fe isotopes

作者：Hutchens Elena^*; Williamson Ben J; Anand Mahesh; Ryan Mary P; Herrington Richard J

来源：Corrosion Science, 2007, 49(10): 3759-3764.

DOI：10.1016/j.corsci.2007.06.001

• iron
• SEM
• X-ray diffraction
• microbiological corrosion

Metal corrosion is microbially induced (MIC) and/or electrochemical (ECC) in origin. Here we provide a novel approach to distinguish MIC from ECC, using iron isotope fingerprinting technique. In laboratory experiments, MIC products of Fe in the presence of a pure strain of Thiomonas sp. WJ68 exhibit a major shift in Fe isotope ratios (delta Fe-56/54 and delta Fe-57/54, by 1.26 and 1.95 parts per thousand, respectively) compared to ECC products formed under identical but sterile conditions. The methodology has applications in a broad range of industrial environments, particularly in the petrochemicals sector.

• 出版日期2007-10