Nutalapati Venkatasubba Naidu

Sri Venkateswara University, Tirupati, State of Andhra Pradesh, India

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Publications (1)1.57 Total impact

  • Abburi Hemasundaram, Nutalapati Venkatasubba Naidu
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    ABSTRACT: A simple spectrophotometric method for the determination of propoxur, a widely used insecticide, in various environmental samples and pesticide formulations is described. The method is based on the coupling of the hydrolysis product of propoxur with diazotized 3-aminopyridine in an alkaline medium, to form an azo-dye which has a maximum absorbance at 463 nm. Beer's law is obeyed over the concentration range of 0.05 to 1.2 microg ml(-1) of propoxur. The molar absorptivity and Sandell's sensitivity are found to be 3.10 x 10(4) l mol(-1) cm(-1) and 0.007 microg cm(-2), respectively. The important analytical parameters and optimum reaction conditions were evaluated. The method is free from the interference of other commonly used pesticides and inorganic metal ions.
    Analytical Sciences 01/2005; 20(12):1707-10. · 1.57 Impact Factor

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3 Citations
1.57 Total Impact Points

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  • 2005
    • Sri Venkateswara University
      • Department of Chemistry
      Tirupati, State of Andhra Pradesh, India