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ASTM D4191-97

Historical Revision

Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry (Withdrawn 2024)

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1.1 This test method covers the determination of low amounts of sodium in waters having low solids content. The applicable range of this test method is from 0.20 to 3.0 mg/L when using the 589.6-nm resonance line. This range may be extended upward by dilution of an appropriate aliquot of sample or by use of the less-sensitive 330.2-nm resonance line. Many workers have found that this test method is reliable for sodium levels to 0.005 mg/L, but use of this test method at this low level is dependent on the configuration of the aspirator and nebulizer system available in the atomic absorption spectrophotometer as well as the experience and skill of the analyst. The precision and bias data presented are insufficient to justify use of this test method in the 0.005 to 0.20-mg/L range.

1.2 This test method has been used successfully with spiked reagent water. It is the analyst's responsibility to assure the validity of the test method to other low dissolved solids matrices.

1.3 This standard does not purport to address all of the safety problems, 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.


SDO ASTM: ASTM International
Document Number D4191
Publication Date Dec. 10, 1997
Language en - English
Page Count 3
Revision Level 97
Supercedes
Committee D19.05
Publish Date Document Id Type View
Feb. 1, 2015 D4191-15 Revision
Oct. 1, 2008 D4191-08 Revision
Jan. 10, 2003 D4191-03 Revision
Dec. 10, 1997 D4191-97 Revision