Determining the Effect of Environmental Conditions on Iron Corrosion by Atomic Absorption

Abstract

Iron corrosion is a complex process that occurs when iron is exposed to oxygen and humidity and is exacerbated by the presence of chloride ions. The deterioration of iron structures or other components can be costly to society and is usually evaluated by following the properties of the corroding material. Here, the iron ions released into solution due to corrosion were detected directly by atomic absorption and their concentration was determined using a calibration curve. Iron corrosion was measured in samples immersed in aqueous solutions that differed in salinity (increasing NaCl concentrations), pH, temperature and presence of oxygen, and under the cathodic protection of a zinc ingot. The corrosion of the iron samples in solution was accelerated by high salinity and temperatures, low pH, the presence of chloride ions and oxygen, and the absence of cathodic protection. Material deterioration due to exposure may be arrested or enhanced by understanding the conditions that expedite the reactions. The experiment was performed by third-year material engineering students and would also be appropriate for an upper-level analytical lab.

Could marine aerosol contribute to deteriorate building materials from interior areas of lighthouses? An answer from the analytical chemistry point of view

“…This practice is widely used to prevent the consequences of physical stress . Salts carried by marine aerosol (mainly chlorides) can assist the iron cramps corrosion process acting as catalysts . Chloride can react as catalyst in the oxidation process of iron cramps.…”

Green Recycling of Poly(ethylene terephthalate) Waste as Corrosion Inhibitor for Steel in Marine Environment

“…Iron corrosion is a complex process that occurs when iron is exposed to oxygen and humidity and is exacerbated by the presence of chloride ions. The deterioration of iron structures or other components can be costly to society and can be evaluated by following the properties of the corroding material [26,27]. The iron(iii) Fe +3 ions released into solution due to corrosion were detected directly by atomic absorption spectroscopy and their concentration was determined using a calibration curve.…”

“…The iron(iii) Fe +3 ions released into solution due to corrosion were detected directly by atomic absorption spectroscopy and their concentration was determined using a calibration curve. The corrosion of the iron samples in solution was accelerated by high salinity, lowering pH, the presence of chloride ions, and temperatures [26,27]. In the present study the ferric ions (iron(iii) Fe +3 ) concentrations result due to corrosion of iron by the corrosive environment after 7 days, were determined by atomic absorption spectroscopy(AAS).…”

Analytical and electroanalytical techniques in the determination of (Fe+2) results from iron corrosion: effect of omeprazole drugs as green inhibitors

“…Iron corrosion is a complex process that occurs when iron is exposed to oxygen and humidity and is exacerbated by the presence of chloride ions. The deterioration of iron structures or other components can be costly to society and can be evaluated by following the properties of the corroding material (41). The iron ions released into the solution due to corrosion were detected directly by AAS and their concentration was determined using a calibration curve.…”

“…The iron ions released into the solution due to corrosion were detected directly by AAS and their concentration was determined using a calibration curve. The corrosion of the iron samples in solution was accelerated by high salinity, lowering pH, the presence of chloride ions and temperatures (41).…”