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      https://www.ias.ac.in/article/fulltext/boms/025/06/0577-0579

    • Keywords

       

      Arsenic; nanoparticle; micelle.

    • Abstract

       

      Arsenic can be determined in parts-per-million (ppm) level by absorbance measurement. This method is based on the quantitative colour bleaching of the dye, methylene blue by arsine catalyzed by nanoparticles in micellar medium. The arsine has been generated in situ from sodium arsenate by NaBH4 reduction. The absorbance measurement was carried out at the 𝜆max of the dye at 660 nm. The calibration graph set-up for three linear dynamic ranges (LDR) are 0–8.63 ppm, 0–1.11 ppm and 0–0.11 ppm and limit of detections (LODs) are 1.3, 0.53 and 0.03 ppm, respectively. This method is simple, sensitive and easy to carry out. It is free from phosphate and silicate interference and applicable to real sample analysis.

    • Author Affiliations

       

      Subrata Kundu1 Sujit Kumar Ghosh1 Madhuri Mandal1 Tarasankar Pal1

      1. Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India
    • Dates

       
  • Bulletin of Materials Science | News

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