Abstract
Generally, more sophisticated techniques such as, flame atomic absorption (AAS), inductively coupled plasma spectrometer (ICP-MS), and UV/Visible Spectrophotometer were used to determine trace iron metals in pickling (acid cleaning), and passivating stainless steel solutions. Simple and novel spectrophotometric methods are described for simultaneous determination of iron. While these techniques provide excellent sensitivity and selectivity. The results were found to be in satisfactory agreement (shows no significant difference) with those acquired by the flame atomic absorption spectrophotometer (FAAS), UV-Vis Spectrometer, and ICP/MS techniques. The results shows that the concentration of iron are very close each other (less than 5.0%) in the pickling and passivating solutions.
Highlights
It is well known that iron is found in surface and drinking water and plays a vital role in biological systems and it is the most abundant metal in the human body
Simple and novel spectrophotometric methods are described for simultaneous determination of iron
Perkin-Elmer 5100 PC Atomic Absorption Spectrophotometer was used with a short part burner and air/acetylene flame optimized with hollow cathode lamp and a single element was measured
Summary
It is well known that iron is found in surface and drinking water and plays a vital role in biological systems and it is the most abundant metal in the human body. An excess of iron in a living cell can catalyze the production of reactive oxygen via the Fenton reaction, which damage lipids, nucleic acids, and proteins Serious diseases such as Alzheimer’s, Huntington’s and Parkinson’s result from the toxicity of iron ion [2, 3], so the concentration of iron becomes a parameter for the quality of drinking water [4]. Yusuf Yildiz et al.: Comparison of Spectrophotometric Methods for Determination of Iron in Acid Cleaning, and Passivating Stainless Steel Solution by UV-VIS, ICP/MS, and FAAS. A solution called “pickling” because it involves the use of an acidic solution known as pickle liquor [8], which usually contains acid, is used to remove the surface impurities. Chloride containing agents such as hydrochloric acid (HCl) should be avoided [11, 12]
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