Detection of ammonium ions, chloride ions, and sulfate ions
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Quantitative determination of chloride ions in acidic solutions. The pH is around 7, and ammonium ions as well as sulfate ions are quantitatively detected; this solution contains nickel ions and fluoride ions. Is it possible to conduct a detection among Haiyous? Thank you all for your active participation! !
Ammonium ions can be analyzed by distillation, with the distillate being absorbed using boric acid. As for sulfate ions, they can be precipitated using an excess of barium-magnesium solution; the remaining barium and magnesium can then be determined through back-titration with EDTA. Alternatively, barium chloride can be added to cause precipitation, followed by filtration through a sand-core funnel and drying
1. Chloride ions in acidic solutions: If the concentration is high enough, a small amount of nitric acid can be added directly for acidification, followed by precipitation titration using a standard silver ion solution. 2. Ammonium in neutral solutions: Ammonia is distilled off by adding a base, and then absorbed with an acid; either colorimetry or titration can be used. 3. Sulfate ions in neutral solutions: Determined by barium sulfate precipitation-weighting method, with extremely high accuracy ； Alternatively, ion chromatography can be used to simultaneously detect the major inorganic anions in the solution at once.
Chloride ions are detected using the microcoulometry method. Fast, highly accurate, and easy to operate; potentiometric titration is sufficient for sulfate ions!
Thank you all for your help. I’ll conduct the experiment properly this time! ! ! ! ! ! ! !
Is the solution colored? If it is, then some of the components in it cannot be measured at all. Also, what is its approximate concentration?
This post was last edited by Cultivator on 2012-6-15 05:59. Could you provide a method for potentiometric titration of sulfate ions? I have a sample with a very high sulfate content, and I haven’t found an appropriate method yet. Thank you.