ASTM D7979 - 17

    Standard Test Method for Determination of Per- and Polyfluoroalkyl Substances in Water, Sludge, Influent, Effluent and Wastewater by Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS)

    Active Standard ASTM D7979 | Developed by Subcommittee: D19.06

    Book of Standards Volume: 11.02


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    Significance and Use

    5.1 PFASs are widely used in various industrial and commercial products; they are persistent, bio-accumulative, and ubiquitous in the environment. PFASs have been reported to exhibit developmental toxicity, hepatotoxicity, immunotoxicity, and hormone disturbance. A draft Toxicological Profile for Perfluoroalkyls from the U.S. Department of Health and Human Services is available.6 PFASs have been detected in soils, sludges, surface, and drinking waters. Hence, there is a need for quick, easy, and robust method to determine these compounds at trace levels in water matrices for understanding of the sources and pathways of exposure.

    5.2 This method has been investigated for use with reagent, surface, sludge and wastewaters for selected PFASs. This method has not been evaluated on drinking water matrices.

    1. Scope

    1.1 This procedure covers the determination of selected per- and polyfluoroalkyl substances (PFASs) in a water matrix using liquid chromatography (LC) and detection with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this method. This method adheres to a technique known as selected reaction monitoring (SRM) or sometimes referred to as multiple reaction monitoring (MRM). This is not a drinking water method, performance of this test method has not been evaluated on drinking water matrices.

    1.2 The Method Detection Limit (MDL)2 and Reporting Range3 for the target analytes are listed in Table 1. The target concentration for the reporting limit for this test method was 10 ng/L for most of the target analytes at the time of development.

    TABLE 1 Method Detection Limit and Reporting Range

    AnalyteA

    MDL
    (ng/L)

    Reporting Ranges
    (ng/L)

    PFTreAB

    1.2

    10 – 400

    PFTriAB

    0.7

    10 – 400

    PFDoAB

    1.2

    10 – 400

    PFUnAB

    1.2

    10 – 400

    PFDAB

    1.4

    10 – 400

    PFOSB

    2.2

    10 – 400

    PFNAB

    1.1

    10 – 400

    PFecHSB

    1.9

    10 – 400

    PFOAB

    1.7

    10 – 400

    PFHxSB

    1.2

    10 – 400

    PFHpAB

    1.0

    10 – 400

    PFHxAB

    2.0

    10 – 400

    PFBSB

    0.8

    10 – 400

    PFPeAB

    4.6

    50 – 2000

    PFBAB

    4.6

    50 – 2000

    FHEA

    92.9

    300 – 8000

    FOEA

    106.8

    300 – 8000

    FDEA

    47.2

    200 – 8000

    FOUEA

    2.3

    10 – 400

    FHpPA

    3.3

    10 – 400

    FHUEA

    1.5

    10 – 400

    (A) Acronyms are defined in 3.3.
    (B) New MDL study was reported in August 2016, which resulted in a reporting limit and range update.

    1.2.1 The reporting limit in this test method is the minimum value below which data are documented as non-detects. The reporting limit may be lowered providing your lab meets the minimum performance requirements of this test method at the lower concentrations, this method is performance based and modifications are allowed to improve performance. Analyte detections between the method detection limit and the reporting limit are estimated concentrations and are not reported following this test method. In most cases, the reporting limit is the concentration of the Level 1 calibration standard as shown in Table 4 for the PFASs after taking into account the 50 % dilution with methanol. It is above the Level 1 calibration concentration for FHEA and FOEA, these compounds can be identified at the Level 1 concentration but the standard deviation among replicates at this lower spike level resulted in a higher reporting limit.

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    Other Standards

    Code of Federal Regulations

    ASTM Standards

    D1129 Terminology Relating to Water

    D1193 Specification for Reagent Water

    D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water

    D3694 Practices for Preparation of Sample Containers and for Preservation of Organic Constituents

    D3856 Guide for Management Systems in Laboratories Engaged in Analysis of Water

    D4841 Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic Constituents

    D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis

    E2554 Practice for Estimating and Monitoring the Uncertainty of Test Results of a Test Method Using Control Chart Techniques


    ICS Code

    ICS Number Code 13.060.50 (Examination of water for chemical substances); 71.080.20 (Halogenated hydrocarbons)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D7979-17

    Citation Format

    ASTM D7979-17, Standard Test Method for Determination of Per- and Polyfluoroalkyl Substances in Water, Sludge, Influent, Effluent and Wastewater by Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS), ASTM International, West Conshohocken, PA, 2017, www.astm.org

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