Search results: “Luo”

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  • Poly- and perfluoroalkyl substances in wastewater: Significance of unknown precursors, manufacturing shifts, and likely AFFF impacts

    Poly- and perfluoroalkyl substances in wastewater: Significance of unknown precursors, manufacturing shifts, and likely AFFF impacts

    Water Research, Elsevier | May 15, 2016...
    Summary

    In late 2014, wastewater effluent samples were collected from eight treatment plants that discharge to San Francisco (SF) Bay in order to assess...

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  • Per- and polyfluoroalkyl substances (PFASs) in San Francisco Bay wildlife: Temporal trends, exposure pathways, and notable presence of precursor compounds

    Per- and polyfluoroalkyl substances (PFASs) in San Francisco Bay wildlife: Temporal trends, exposure pathways, and notable presence of precursor compounds

    Chemosphere, Elsevier | April 21, 2017...
    Summary

    Concentrations of perfluorooctane sulfonate (PFOS) in San Francisco Bay (SF Bay) wildlife have historically been among the highest reported globally. To track continuing...

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  • Per and Polyfluoroalkyl Substances (PFASs) in San Francisco Bay: Synthesis and Strategy

    Per and Polyfluoroalkyl Substances (PFASs) in San Francisco Bay: Synthesis and Strategy

    San Francisco Estuary Institute (SFEI) | June 1, 2018...
    Summary

    Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are a broad class of fluorine-rich specialty chemicals. Some types of PFASs, and in particular the perfluoroalkyl forms, possess thermal...

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  • Concentrations for total dissolved solids, arsenic, boron, fluoride, and nitrite-nitrate for wells sampled in the Mojave Water Agency Management Area

  • DGMETA (Version 1): Dissolved Gas Modeling and Environmental Tracer Analysis Computer Program

    DGMETA (Version 1): Dissolved Gas Modeling and Environmental Tracer Analysis Computer Program

    U.S. Geological Survey (USGS) | January 8, 2021...
    Summary

    DGMETA (Dissolved Gas Modeling and Environmental Tracer Analysis) is a Microsoft Excel-based computer program that is used for modeling air-water equilibrium conditions from...

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  • Serum concentrations of PFASs and exposure-related behaviors in African American and non-Hispanic white women

    Serum concentrations of PFASs and exposure-related behaviors in African American and non-Hispanic white women

    Journal of Exposure Science & Environmental Epidemiology | January 8, 2019...
    Summary

    Per- and polyfluoroalkyl substances (PFASs) are used in a wide range of consumer products for their water- and grease-resistant properties, but few studies...

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  • Guideline levels for PFOA and PFOS in drinking water: the role of scientific uncertainty, risk assessment decisions, and social factors

    Guideline levels for PFOA and PFOS in drinking water: the role of scientific uncertainty, risk assessment decisions, and social factors

    Journal of Exposure Science & Environmental Epidemiology | January 8, 2019...
    Summary

    Communities across the U.S. are discovering drinking water contaminated by perfluoroalkyl and polyfluoroalkyl substances (PFAS) and determining appropriate actions. There are currently no federal...

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  • Contaminant Concentrations in Sport Fish from San Francisco Bay, 2014

    Contaminant Concentrations in Sport Fish from San Francisco Bay, 2014

    San Francisco Estuary Institute (SFEI) | June 1, 2017...
    Summary

    This summary report presents results from a 2014 survey of contaminants in San Francisco Bay sport fish, as well as an additional 2015...

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  • Mapping selected trace elements and major ions, 2000-2012, Mojave River and Morongo Groundwater Basins, Southwestern Mojave Desert, San Bernardino County, California

    Mapping selected trace elements and major ions, 2000-2012, Mojave River and Morongo Groundwater Basins, Southwestern Mojave Desert, San Bernardino County, California

    U.S. Geological Survey (USGS) | July 1, 2015...
    Summary

    The population of the Mojave River and Morongo groundwater basins has grown rapidly during the last several decades, increasing from an estimated population...

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