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    Holding Times of Volatile Organics in Water

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    “Holding Time” can be defined as the maximum period between sampling and analysis before the occurrence of significant sample degradation. They are stipulated because of the recognition that chemical and physical characteristics may change during this period. However, sampling method, sample container, storage (conditions and preservative, as well as time), shipping conditions, etc, contribute to a collective effect on sample stability. This paper discusses the significance of holding time as a variable relative to method performance and suggests alternative preservation techniques.


    volatile organics, sample holding times, data review, method performance

    Author Information:

    Bottrell, DW
    Manager, Viar and Co., Alexandria, VA

    Fisk, JF
    Chief, Office of Emergency and Remedial Response, US EPA, Washington, DC,

    Robertson, GL
    Chemist, US EPA Environmental Monitoring Systems Laboratory, Las Vegas, NV

    Petty, JD
    Director, Fermenta Animal Health, Fort Collins, CO

    Dempsey, CH
    Program Development Manager, Lockheed-ESC, Washington, D.C.

    Bartling, ML
    Chemist, Martin Marietta Energy Systems Inc., Oak Ridge National Laboratory, Oak Ridge, TN

    Committee/Subcommittee: D18.21

    DOI: 10.1520/STP25477S