Analysis methods for iron ions in water
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I’m not an analyst, but I have a question for everyone: how is the content of iron ions and hydrogen sulfide in the overhead cut water (sulfur-containing wastewater) analyzed during atmospheric and vacuum distillation processes? Is chromatography being used?
There are specialized online analyzers for sulfide ions and online analyzers for iron ions. Online sulfur ion analyzers generally use potentiometric titration or ion-selective electrode methods, while for iron ions, colorimetry is used to analyze the total amount of iron. If you need such an analyzer, feel free to contact me.
Iron ions can be complexed with o-phenanthroline using ultraviolet-visible spectrophotometry. Information on hydrogen sulfide can be found at http://www.docin.com/p-19759895.html Water and Wastewater Testing and Analysis Methods (4th Edition)
Spectrophotometric methods can be used, as well as o-phenylenediamine reduction
Iron atom absorption is also possible, along with phosphorus fertilizer rhodamine colorimetry