Use of iron(II) DMG system for the spectrophotometric determination of ammonia and other basic ions. | [Journal of Chemical Society of Pakistan • 1991]

Author(s):

1. Jamil Anwar: Institute of Chemistry, University of Punjab, Lahore, Pakistan

2. M. I. Farooqi: Institute of Chemistry, University of Punjab, Lahore, Pakistan

3. Abdullah Khan: Chemistry Department, University of Baluchistan, Quetta, Pakistan

Abstract:

Iron(11) forms a water soluble brownish-red complex with dimethylglyoxime. In neutral medium an equilibrium is established between unreacted ions and complexed iron(II)-dimethylglyoximate. Addition of ammonia or any other basic in shifts the equilibrium towards right and absorbance due to iron(Il)-dimethylglyoximate is enhanced. Increase in the absorbance may be used to detect and determine the added basic material. The potential of the system for quantitative determination of a number of basic ions like hydroxide, carbonate, bicarbonate and phosphate has been explored and a procedure for the determination of ammonia is described.

Page(s): 201-204

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 13, Issue: 3, Year: 1991

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