ASTM-D6071 › Historical Revision Information
Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
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Scope
1.1 This test method covers the determination of trace sodium in high purity water. The method range of concentration is 1 to 40 g/L sodium. The analyst may extend the range once its applicability has been ascertained. Note 1It is necessary to perform replicate analysis and take an average to accurately determine values at the lower end of the stated range.
1.2 This test method is a graphite furnace atomic absorption spectrophotometric method for the determination of trace sodium impurities in ultra high purity water.
1.3 This test method has been used successfully with a high purity water matrix. It is the responsibility of the analyst to determine the suitability of the test method for other 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
Small quantities of sodium, 1 to 10 μg/L, can be significant in high pressure boiler systems and in nuclear power systems. Steam condensate from such systems must have less than 10 μg/L. In addition, condensate polishing system effluents should have less than 1 μg/L. Graphite furnace atomic absorption spectroscopy (GFAAS) represents technique for determining low concentrations of sodium.
Keywords
graphite furnace atomic absorption spectroscopy (GFAAS); high purity water; sodium; ICS Number Code 71.040.50 (Physicochemical methods of analysis)
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Document Number
ASTM-D6071-06
Revision Level
2006 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
July 1, 2006
Document Type
Test Method
Page Count
5 pages
Committee Number
D19.03