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    ASTM D4309 - 18

    Standard Practice for Sample Digestion Using Closed Vessel Microwave Heating Technique for the Determination of Total Metals in Water

    Active Standard ASTM D4309 | Developed by Subcommittee: D19.05

    Book of Standards Volume: 11.01

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    Significance and Use

    5.1 The analysis of many types of water for metals using flame atomic absorption spectrophotometry, inductively coupled plasma emission spectrophotometry, direct current plasma emission spectrophotometry, or graphite furnace atomic absorption spectrophotometry necessitates the use of a digestion practice in order to ensure the proper statistical recovery of the metals from the sample matrix. The use of closed vessel microwave techniques will speed the complete recovery of metals from the water matrices and eliminate sample contamination from external sources.

    1. Scope

    1.1 This practice covers the general considerations for quantitative sample digestion for total metals in water using closed vessel microwave heating technique. This practice is applicable to surface, saline, domestic, and industrial wastewater.

    1.2 Because of the differences among various makes and models of satisfactory instruments, no detailed operating instructions can be provided. Instead, the analyst should follow the instructions provided by the manufacturer of the particular instrument.

    1.3 This practice can be used with the following ASTM standards, providing the user determines precision and bias based on this digestion practice: Test Method D857, Test Methods D858, Test Methods D1068, Test Methods D1687, Test Methods D1688, Test Methods D1691, Test Methods D1886, Test Method D1976, Practices D3370, Test Methods D3557, Test Methods D3559, Practice D3919, Test Method D4190, Practice D4453, Practice D4691, and Test Method D5673.

    1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversion to inch-pound units that are provided for information only and are not considered standard.

    1.5 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. For specific hazard statements, see Section 9.

    1.6 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.

    U.S. EPA Method

    U.S. EPA Method: Methods for Chemical Analysis of Water and WasteMarch 1979, Total Metals Digestion Procedure 4.1.3, page Metals 6

    U.S. EPA Method: SW 846 Method 3015 Microwave Assisted Acid Digestion of Aqueous Samples and Extracts

    ASTM Standards

    D857 Test Method for Aluminum in Water

    D858 Test Methods for Manganese in Water

    D1068 Test Methods for Iron in Water

    D1129 Terminology Relating to Water

    D1193 Specification for Reagent Water

    D1687 Test Methods for Chromium in Water

    D1688 Test Methods for Copper in Water

    D1691 Test Methods for Zinc in Water

    D1886 Test Methods for Nickel in Water

    D1976 Test Method for Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission Spectroscopy

    D3370 Practices for Sampling Water from Closed Conduits

    D3557 Test Methods for Cadmium in Water

    D3559 Test Methods for Lead in Water

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

    D3919 Practice for Measuring Trace Elements in Water by Graphite Furnace Atomic Absorption Spectrophotometry

    D4190 Test Method for Elements in Water by Direct-Current Plasma Atomic Emission Spectroscopy

    D4453 Practice for Handling of High Purity Water Samples

    D4691 Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry

    D5673 Test Method for Elements in Water by Inductively Coupled PlasmaMass Spectrometry

    U.S. Code of Federal Regulations

    CFR 1.030.10 Code of Federal Regulations, Volume 21

    ICS Code

    ICS Number Code 13.060.50 (Examination of water for chemical substances)

    UNSPSC Code

    UNSPSC Code

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

    DOI: 10.1520/D4309-18

    Citation Format

    ASTM D4309-18, Standard Practice for Sample Digestion Using Closed Vessel Microwave Heating Technique for the Determination of Total Metals in Water, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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