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    • Quaternary ammonium compounds in wastewater treatment effluents from 2020 to 2021

    Metadata Updated: November 21, 2024

    Quaternary ammonium compounds (QAC) are used in many commercial and household disinfection products. A method was developed to measure QAC occurrence in water discharged from three wastewater treatment plants during 2020 and 2021. Water samples (20 mL) were processed via solid phase extraction using weak cation exchange (WCX) cartridges (3 cc, 60 mg) and analyzed via liquid chromatography tandem mass spectrometry. Samples were analyzed for 12 QACs including benzethonium, six benzylalkyldimethyl ammonium compounds (BAC), three dialkyldimethyl ammonium compounds (DADMAC), and two ethylbenzylalkyldimethyl ammonium compounds (EBACs). QACs were detected in 100% of WWTP effluents with individual concentrations ranging 2.30-1,630 ng/L and total QAC concentrations (ΣQAC, the sum of 12 QAC) ranged 38.1-3,450 ng/L. The average concentrations of QACs detected in effluents was 49% BAC (average ΣBAC = 168 ng/L), 38% DADMAC (average ΣDADMAC = 119 ng/L), 9% EBACs (ΣEBAC = 25.0 ng/L), and 4% benzethonium (15.6 ng/L).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Created Date November 19, 2024
    Metadata Updated Date November 21, 2024

    Metadata Source

    Harvested from DOI EDI

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 19, 2024
    Metadata Updated Date November 21, 2024
    Publisher U.S. Geological Survey
    Maintainer
    @Id http://datainventory.doi.gov/id/dataset/9a9a69d8ac409fffc3fda5704b898db3
    Identifier USGS:65af003fd34ef34c3506d8a8
    Data Last Modified 20241119
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://datainventory.doi.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 430a27de-6f9b-496f-901f-b54a1abea140
    Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
    Harvest Source Title DOI EDI
    Metadata Type geospatial
    Old Spatial -80.2002,40.0444,-71.6748,45.89
    Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
    Source Datajson Identifier True
    Source Hash 66f1188a33e5fe4b57316a61106fe05ab9bdffdf27e3969db9d07e1364140cbb
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -80.2002, 40.0444, -80.2002, 45.89, -71.6748, 45.89, -71.6748, 40.0444, -80.2002, 40.0444}

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