ASTM-D3561 › Historical Revision Information
Standard Test Method for Lithium, Potassium, and Sodium Ions in Brackish Water, Seawater, and Brines by Atomic Absorption Spectrophotometry
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1.1 This test method covers the determination of soluble lithium, potassium, and sodium ions in brackish water, seawater, and brines by atomic absorption spectrophotometry.
1.2 Samples containing from 0.1 to 70000 mg/L of lithium, potassium, and sodium may be analyzed by this test method.
1.3 This test method has been used successfully with artificial brine samples. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.
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.
Significance and Use
Identification of a brackish water, seawater, or brine is determined by comparison of the concentrations of their dissolved constituents. The results are used to evaluate the water as a possible pollutant, or as a commercial source of a valuable constituent such as lithium.
brackish; brine; lithium; potassium; seawater; sodium; ICS Number Code 13.060.50 (Examination of water for chemical substances)
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2002 R07(E1) EDITION
Reapproval with Ed Change
Sept. 1, 2007