International Scholarly Research Notices / 2011 / Article / Tab 2

Research Article

Evaluation of Nitrilotrimethylene Phosphonic Acid and Nitrilotriacetic Acid as Corrosion Inhibitors of Mild Steel in Sea Water

Table 2

Binding energies (eV) of elements present on mild steel surface after and before treatment with inhibitors.

SolutionFe 2p3/2O 1SO1SCl 2p1/2Cl 2p3/2P 2pC 1SN 1S
OOH

Sea water717.3537.5204.3
3 ppm NTP718.2536.7537.6197.6203.7140.0289.5407.2
300 ppm NTP717.6536.2537.4197.7205.4139.1290.4405.7
130.6
3 ppm NTA717.9536.1537.4196.5204.4289.7405.5
300 ppm NTA717.1536.1537.2196.5205.3290.3405.9