Authors : Hasan M. Luaibi, Bassam F. Alfarhani and Muqdad Irhaeem Kadhim
Abstract: In this study, multiple H2O samples were collected from different locations in Diwaniyah River, Iraq. This river consider to be the major pollutes site in this city, the reson behind this is the huge amount of pollutatnts going to the river stream over years. To get a better picture about the extent of pollution, the ferric concentration levels have been determined in the river stream. Two separate spectrophotometric methods have been developled for quantification of low concentration levels of ferric in different sources of water, these two methods were, quick, simple and sensitive. The 8 hydroxy quinoline has been used in the first method and the reagent was acting as a chromogenic, the detection was based on reaction of ferric with 8 Hydroxy quinoline (8-Hy) to form a chemical complex with λ max equal to 371 nm using multi-extraction method of analysis. In method 2, KSCN (potassium thiocynate) was act as a chromogen then will react with ferric ion in acidic pH to produce a complex (red) with λ max equal to 480 nm. In both methods Beers-Lambert law was observed with a 0.1-2.0 ppm as dynamic range of Fe3+. The value of recovery was 98.5-102.5% with 1.1 and 1.05% as a coefficient of variation of for method one and method two. Both methods show statically no difference in ferric concentrations, therefore, the two methods were effectively practical to determine ferric concentration in river, tap and botteled water samples.
Hasan M. Luaibi, Bassam F. Alfarhani and Muqdad Irhaeem Kadhim, 2018. Detection of Fe(III) Levels via. Two Different Spectrophotometric Methods in Diwaniah City/Iraq. Journal of Engineering and Applied Sciences, 13: 10380-10383.