• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/132/0089

    • Keywords

       

      Chemosensor; colorimetry; mercury; fluoride; density functional theory

    • Abstract

       

      This study demonstrates the design, synthesis and sensing applications of a simple and efficient chemosensor, 2-(1,3-dioxo-1H-inden-2(3H)-ylidene)hydrazinecarbothioamide (R) for quick detection of Hg2+ and F- in aqueous media using a colorimetric test, UV–Vis spectral analysis, and silica gel support Sensor R showed the typical absorption peak at 305 nm for Hg2+ which is responsible for color change from yellow to colorless, while in the case of F-, R exhibits a major peak at 415 nm and a color change from yellow to red. The limit of detection (LOD) of R for the analysis of Hg2+ was calculated as 1x10-6 M while for F-, it was found to be 3.4x10-7 M. The binding modes of R with Hg2+ and F- have been investigated by the Job’s plot, Benesi–Hildebrand (BH) method, 1H NMR, FTIR and theoretical studies. The sensor R was reversible after treating it with reagents such as EDTA and calcium nitrate solution after contacting with Hg2+ and F-, respectively. The performance of R can be successfully applied for the analysis of F- contents present in toothpastes

    • Author Affiliations

       

      V RAJU1 2 R SELVA KUMAR1 S K ASHOK KUMAR1 G MADHU2 SHILPA BOTHRA3 SUBAN K SAHOO3

      1. Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 63 2014, India
      2. Center for Applied Science, Sree Vidyanikethan Engineering College, Tirupati 517 102, India
      3. Department of Applied Chemistry, SV National Institute Technology, Surat 395 007, India
    • Dates

       
  • Journal of Chemical Sciences | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.