Environmental Monitoring and Assessment

, Volume 157, Issue 1–4, pp 575–582 | Cite as

Spectrophotometric method for the determination of chromium (VI) in water samples

  • P. NagarajEmail author
  • N. Aradhana
  • Anantharaman Shivakumar
  • Ashwinee Kumar Shrestha
  • Avinash k Gowda


A simple and sensitive spectrophotometric method for the determination of chromium has been developed. The method is based on the diazotization of Dapsone in hydroxylamine hydrochloride medium and coupling with N-(1-Napthyl) Ethylene Diamine Dihydrochloride by electrophilic substitution to produce an intense pink azo-dye, which has absorption maximum at 540 nm. The Beer’s law is obeyed from 0.02-1.0 μg mL−1 and the molar absorptivity is 3.4854 L mol−1 cm−1. The Limits of quantification and Limit of detection of the proposed method are 0.0012 μg mL−1 and 0.0039 μg mL−1 respectively. The method has been successfully applied for the determination of chromium in water samples and the results were statistically evaluated with that of the reference method.


Chromium (VI) determination Dapsone N-(1-Napthyl) Ethylenediamine dihydrochloride Spectrophotometry 


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • P. Nagaraj
    • 1
    Email author
  • N. Aradhana
    • 1
  • Anantharaman Shivakumar
    • 1
  • Ashwinee Kumar Shrestha
    • 1
  • Avinash k Gowda
    • 1
  1. 1.Department of Studies in ChemistryUniversity of MysoreManasagangotri, MysoreIndia

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