ASTM D4327 - 11

    Standard Test Method for Anions in Water by Suppressed Ion Chromatography

    Active Standard ASTM D4327 | Developed by Subcommittee: D19.05

    Book of Standards Volume: 11.01

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    Significance and Use

    Ion chromatography provides for both qualitative and quantitative determination of seven common anions, F, Cl, NO2, HPO42, Br, NO3, and SO42, in the milligram per liter range from a single analytical operation requiring only a few milliliters of sample and taking approximately 10 to 15 min for completion. Additional anions, such as carboxylic acids, can also be quantified.

    Note 2—This test method may be used to determine fluoride if its peak is in the water dip by adding one mL of eluent (at 100× the concentration in 8.3) to all 100-mL volumes of samples and standards to negate the effect of the water dip. (See 6.3, and also see 6.4.) The quantitation of unretained peaks should be avoided. Anions such as low molecular weight organic acids (formate, acetate, propionate, etc.) that are conductive coelute with fluoride and would bias fluoride quantitation in some drinking waters and most wastewaters. The water dip can be further minimized if measures are taken to remove carbonic acid which remain in the eluent after suppression using carbonate based eluents. There is no water dip if hydroxide eluents are used.

    Anion combinations such as Cl/Br and NO2/NO3, which may be difficult to distinguish by other analytical methods, are readily separated by ion chromatography.

    1. Scope

    1.1 This test method covers the sequential determination of fluoride, chloride, nitrite, ortho-phosphate, bromide, nitrate, and sulfate ions in water by suppressed ion chromatography.

    Note 1—Order of elution is dependent upon the column used; see Fig. 1.

    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

    D1066 Practice for Sampling Steam

    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

    D3370 Practices for Sampling Water from Closed Conduits

    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 71.040.40 (Chemical analysis)

    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/D4327-11

    Citation Format

    ASTM D4327-11, Standard Test Method for Anions in Water by Suppressed Ion Chromatography, ASTM International, West Conshohocken, PA, 2011,

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