ASTM D1691 - 12

    Standard Test Methods for Zinc in Water

    Active Standard ASTM D1691 | Developed by Subcommittee: D19.05

    Book of Standards Volume: 11.01


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    Significance and Use

    4.1 Zinc is an essential and beneficial element in body growth. Concentrations above 5 mg/L can cause a bitter astringent taste and opalescence in alkaline waters. The zinc concentration of U.S. drinking waters varies between 0.06 and 7.0 mg/L with a mean of 1.33 mg/L. Zinc most commonly enters the domestic water supply from deterioration of galvanized iron and dezincification of brass. Zinc in water also may result from industrial water pollution.3

    1. Scope

    1.1 These test methods cover the determination of zinc in water. Two test methods are given as follows:

    Test Method

    Concentration Range

    Sections

    A—Atomic Absorption, Direct

    0.05 to 2 mg/L

     8-16

    B—Atomic Absorption,
     Chelation-Extraction

    20 to 200 μg/L

    17-25


    1.2 Either dissolved or total recoverable zinc may be determined.

    1.3 These test methods have been used successfully with reagent grade water. See the specific test method for applicability to other matrices. It is the user's responsibility to assure the validity of these test methods in other matrices.

    1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are mathematical conversions and may not be exact equivalents; therefore, each system shall be used independently of the other.

    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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 6 and Note 6, Note 10, and Note 16.

    1.6 Two former colorimetric test methods were discontinued. Refer to Appendix X1 for historical information.


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

    ASTM Standards

    D858 Test Methods for Manganese in Water

    D1066 Practice for Sampling Steam

    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

    D1886 Test Methods for Nickel in Water

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

    D3370 Practices for Sampling Water from Closed Conduits

    D3557 Test Methods for Cadmium in Water

    D3558 Test Methods for Cobalt in Water

    D3559 Test Methods for Lead in Water

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

    D5810 Guide for Spiking into Aqueous Samples

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


    ICS Code

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

    UNSPSC Code

    UNSPSC Code 11101719(Zinc)


    DOI: 10.1520/D1691-12

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