Authors: Shayma A. Nadir1 & Nabil A. Fakhre2
1Department of Chemistry, College of Education, Salahaddin University, Erbil, Iraq
2Department of Chemistry, College of Education, Salahaddin University, Erbil, Iraq
Abstract: This paper describes a simple, rapid, and reliable derivative spectrophotometric technique for the simultaneous determination of aniline and 2-nitroaniline in tap water samples. The measurement method for first and second derivative spectrophotometry was based on the zero-crossing technique. The calibration graphs are in the concentration spectrum, linear of 1.0 – 20.0 µgmL-1 and 1-11.0 µgmL-1 for aniline and 2-nitroaniline successively. Relative standard deviations were less than 4.7% and 4.83%. The detection limits were in the range of 0.03-0.062 µg /mL and the limits of quantification were in the range of 0.25-0.57 µgmL-1, respectively. The recoveries range from 97.5 – 101.66 % for aniline and 96.67–102.22 % for 2-nitroaniline. The values of r2of the method were 0.9991 and 0.9999, correspondingly. The proposed methods are successfully applied to estimate binary mixtures of aniline and 2-nitroaniline in tap water samples.
Keywords: Aniline, 2-Nitroaniline, Derivative Spectrophotometry, Tap Water Samples
Published: December 20, 2022
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