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ASTM International - ASTM D4191-08

Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry

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Organization: ASTM International
Publication Date: 1 October 2008
Status: inactive
Page Count: 4
ICS Code (Examination of water for chemical substances): 13.060.50
significance And Use:

Sodium salts are very soluble, and sodium leached from soil and rocks tends to remain in solution. Water with a high ratio of sodium to calcium is deleterious to soil structure.

Sodium is... View More

scope:

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 (see Test Method D 3561). 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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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.

Document History

February 1, 2015
Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry
1.1 This test method covers the determination of low amounts of sodium in waters2 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...
ASTM D4191-08
October 1, 2008
Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry
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...
January 10, 2003
Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry
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...
December 10, 1997
Standard Test Method for Sodium in Water by Atomic Absorption Spectrophotometry
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...
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