Iron Determination by Colorimetric Method Using O-Phenanthroline

Authors

  • Atri Deo Tripathi Associate Professor, Dept. of Chemistry, College of Engineering, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India.
  • K A Gupta Department of Chemistry, Faculty of Engineering, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India.
  • Shally Malik Department of Chemistry, Faculty of Engineering, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh 244001, India.

DOI:

https://doi.org/10.48165/

Keywords:

Colorimeter, 1, 10 phenanthroline, standard solutions, calibration, wavelength

Abstract

Fe2+ reaction with 1, 10-Phenanthroline  determined the quantity of soluble iron (II) in the  sample to transform a weakly colored iron into  an intensely colored complex which could be  used in the analysis. The substance absorbed  certain wavelengths when a light from the source  with a certain intensity and frequency range was  passed to this intensely colored complex. The  intensity of a solution's color is proportional to  the absorbing species concentration and the  absorption is proportional to the substance  concentration. A separate concentration of  standards was prepared and absorbance in 511  nm, the largest wavelength, was determined  using Colorimeter. Using the same standard  technique and reagents, a blank and three  unknown samples were also prepared. A  calibration curve was built following Beer's Law.  The iron concentration was verified using the  equation of the calibration curve and the  absorption under the same experimental  conditions of three unknowns. 

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References

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Published

2019-10-12

How to Cite

Iron Determination by Colorimetric Method Using O-Phenanthroline . (2019). Bulletin of Pure and Applied Sciences-Chemistry , 38(2), 171–175. https://doi.org/10.48165/