FIELD: chemistry.
SUBSTANCE: invention can be used to determine content of iron (II) in solutions of pure salts containing iron (II) in very low concentrations. The method involves converting iron (III) into a complex compound with an organic reagent in a weakly acidic medium. The iron (II) solution with pH 2-5 is mixed with 200-300 times the amount of the organic reagent which is Congo red, 0.2-0.4 ml surfactant solution in form of a 0.2% solution of monoalkyphenyl ester of polyethylene glycol based on a polymer distillate and 10 ml water, followed by heating on a water bath at temperature of 80-98°C for 10-15 minutes.
EFFECT: high sensitivity of analysis.
5 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PHOTOMETRIC DETERMINATION OF IRON (III) IN PURE SALTS SOLUTIONS | 2008 |
|
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| METHOD FOR PHOTOMETRIC DETECTION IRON (III) IN SOLUTIONS OF PURE SALTS | 2009 |
|
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