STP963

    Field Evaluation of Seven Sampling Devices for Purgeable Organic Compounds in Ground Water

    Published: Jan 1988


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    Abstract

    Seven different sampling devices—(1) a bladder pump, (2) a helical-rotor submersible pump, (3) a gear submersible pump, (4) an open bailer, (5) a point-source bailer, (6) a syringe sampler, and (7) a peristaltic pump—were evaluated to determine their ability to recover purgeable organic compounds (POCs) from ground water under field conditions. Significant differences among the mean concentrations obtained with each sampler were found for selected POCs at each of three sites. The overall order of the sampling devices from highest to lowest recovery using data from all three sites yielded the following: (1) gear submersible pump, (2) point-source bailer, (3) open bailer, (4) helical-rotor submersible pump, (5) bladder pump, (6) syringe sampler, and (7) peristaltic pump. The overall standardized mean concentrations of Samplers 1 through 5 were closely grouped, indicating these devices were very similar in their ability to recover POCs. A similar overall order of the coefficients of variation indicated no clear difference between the sampling devices in the precision with which they recovered POCs. However, the three samplers with the lowest coefficients of variation (highest precision) were all positive-displacement pumping devices whereas the three samplers with the highest coefficients of variation (lowest precision) were all grab-sampling devices.

    Keywords:

    ground-water sampling, purgeable organic compounds, volatile organic compounds, sampling techniques, water quality, water chemistry


    Author Information:

    Imbrigiotta, TE
    Hydrologist, environmental engineer, hydrologist, hydrologist, and hydrologist, U.S. Geological Survey, West Trenton, NJ

    Gibs, J
    Hydrologist, environmental engineer, hydrologist, hydrologist, and hydrologist, U.S. Geological Survey, West Trenton, NJ

    Fusillo, TV
    Hydrologist, environmental engineer, hydrologist, hydrologist, and hydrologist, U.S. Geological Survey, West Trenton, NJ

    Kish, GR
    Hydrologist, environmental engineer, hydrologist, hydrologist, and hydrologist, U.S. Geological Survey, West Trenton, NJ

    Hochreiter, JJ
    Hydrologist, environmental engineer, hydrologist, hydrologist, and hydrologist, U.S. Geological Survey, West Trenton, NJ


    Paper ID: STP44865S

    Committee/Subcommittee: D19.06

    DOI: 10.1520/STP44865S


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