scope:

These test methods² cover the determination of soluble iodide and bromide ions, or both, in brackish water, seawater, and brines. Four test methods are given as follows:

Test Method A for both Iodide and Bromide Ions- Volumetric, for concentrations from 0.2 mg ⁄L to 2000 mg/L iodide and from 5 mg ⁄L to 6500 mg/L bromide (Sections 7 - 15).

Test Method B for Iodide Ion-Colorimetric, for concentrations from 0.2 mg ⁄L to 2000 mg ⁄L iodide (Sections 16 - 25).

Test Method C for Iodide Ion-Selective electrode, for concentrations from 1 mg ⁄L to 2000 mg/L iodide (Sections 26 - 34).

Test Method D for Bromide Ion-Colorimetric, for concentrations from 40 mg ⁄L to 6500 mg/L bromide (Sections 35 - 44).

Test Method A is intended for use on all brackish waters, seawaters, and brines that contain appreciable amounts of iodide or bromide ions or both. Test Methods B, C, and D, because of their rapidity and sensitivity, are recommended for the analysis of brackish waters, seawaters, and brines in the field and in the laboratory.

Samples containing from 0.2 mg ⁄L to 2000 mg ⁄L of iodide or 5 mg ⁄L to 6500 mg ⁄L of bromide may be analyzed by these methods.

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

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 precautionary statements, see 20.2 and 39.2.

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 Additional information is contained in the following references: Collins, A. G., Geochemistry of Oilfield Waters, Elsevier, New York, N.Y., 1975, 496 pp.American Petroleum Institute, API Recommended Practice for Analysis of Oilfield Waters, Subcommittee on Analysis of Oilfield Waters, API RP, 45 2nd ed, 1968, 49 pp.Hoke, S. H, Fletcher, G. E., and Collins, A. G., "Fluoride and Iodide Selective Electrodes Applied to Oilfield Brine Analysis," US Department of Energy, Report of Investigations, BETC/RI-78/7, 1978.