Giardia duodenalis : Number and Fluorescence Reduction Caused by the Advanced Oxidation Process (H 2 O 2 /UV)

  • Guimarães J
  • Franco R
  • Guadagnini R
  • et al.
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Abstract

This study evaluated the effect of peroxidation assisted by ultraviolet radiation (H 2 O 2 /UV), which is an advanced oxidation process (AOP), on Giardia duodenalis cysts. The cysts were inoculated in synthetic and surface water using a concentration of 12 g H 2 O 2 L −1 and a UV dose ( λ=254 nm) of 5,480 mJcm −2 . The aqueous solutions were concentrated using membrane filtration, and the organisms were observed using a direct immunofluorescence assay (IFA). The AOP was effective in reducing the number of G. duodenalis cysts in synthetic and surface water and was most effective in reducing the fluorescence of the cyst walls that were present in the surface water. The AOP showed a higher deleterious potential for G. duodenalis cysts than either peroxidation (H 2 O 2 ) or photolysis (UV) processes alone.

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Guimarães, J. R., Franco, R. M. B., Guadagnini, R. A., & Santos, L. U. dos. (2014). Giardia duodenalis : Number and Fluorescence Reduction Caused by the Advanced Oxidation Process (H 2 O 2 /UV) . International Scholarly Research Notices, 2014, 1–7. https://doi.org/10.1155/2014/525719

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