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Biological Weighting Functions for Evaluating the Role of Sunlight-Induced Inactivation of Coliphages at Selected Beaches and Nearby Tributaries.
Zepp, Richard G; Cyterski, Michael; Wong, Kelvin; Georgacopoulos, Ourania; Acrey, Brad; Whelan, Gene; Parmar, Rajbir; Molina, Marirosa.
Afiliación
  • Zepp RG; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Cyterski M; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Wong K; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Georgacopoulos O; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Acrey B; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Whelan G; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Parmar R; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
  • Molina M; U.S. Environmental Protection Agency, National Exposure Research Laboratory , 960 College Station Road , Athens , Georgia 30605 , United States.
Environ Sci Technol ; 52(22): 13068-13076, 2018 11 20.
Article en En | MEDLINE | ID: mdl-30395707
Coliphages can indicate contamination of recreational waters and previous studies show that sunlight is important in altering densities of coliphages, other indicator microorganisms, and pathogens in aquatic environments. Here, we report on laboratory studies of light-induced inactivation of two coliphage groups-male-specific (F+) and somatic coliphage-under various conditions in phosphate-buffered water (PBW). Strains isolated from wastewater treatment facilities and laboratory strains (MS2 and phiX174 coliphages) were evaluated. Inactivation rates were determined in a series of irradiations using simulated solar radiation passed through light filters that blocked different parts of the ultraviolet spectral region. Inactivation rates and spectral irradiance from these experiments were then analyzed to develop biological weighting functions (BWFs) for the light-induced inactivation. BWFs were used to model the inactivation of coliphages over a range of conditions in aquatic environments that included two beach sites in Lake Michigan and one in Lake Erie. For example, modeled effects of sunlight attenuation, using UV absorption data from the three Great Lakes beach sites, inferred that direct photoinactivation rate constants, averaged over a one-meter water column in swimmable areas, were reduced 2- to 5-fold, compared to near-surface rate constants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Luz Solar / Microbiología del Agua Límite: Humans / Male País/Región como asunto: America do norte Idioma: En Revista: Environ Sci Technol Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Luz Solar / Microbiología del Agua Límite: Humans / Male País/Región como asunto: America do norte Idioma: En Revista: Environ Sci Technol Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos