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ASTM D6071-06

(Test Method)

Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy

Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy

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.
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.

General Information

Status
Historical
Publication Date
30-Jun-2006
ICS
71.040.50 - Physicochemical methods of analysis
Technical Committee
D19 - Water
Drafting Committee
D19.03 - Sampling Water and Water-Formed Deposits, Analysis of Water for Power Generation and Process Use, On-Line Water Analysis, and Surveillance of Water
Current Stage
Ref Project

Relations

Replaces
ASTM D6071-96(2000) - Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
Effective Date
01-Jul-2006
Replaced By
ASTM D6071-13 - Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
Effective Date
01-Jan-2013
Referred By
ASTM D1193-06(2018) - Standard Specification for Reagent Water
Effective Date
01-Jul-2006
Referred By
ASTM D445-21e2 - Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
Effective Date
01-Jul-2006

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ASTM D6071-06 - Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption SpectroscopyASTM D6071-06 - Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
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ASTM D6071-06 - Standard Test Method for Low Level Sodium in High Purity Water by Graphite Furnace Atomic Absorption Spectroscopy
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6071 − 06
StandardTest Method for
Low Level Sodium in High Purity Water by Graphite Furnace
1
Atomic Absorption Spectroscopy
This standard is issued under the fixed designation D6071; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Graphite Furnace Atomic Absorption Spectrophotometry
D4453 Practice for Handling of High Purity Water Samples
1.1 This test method covers the determination of trace
D5810 Guide for Spiking into Aqueous Samples
sodium in high purity water. The method range of concentra-
D5847 Practice for Writing Quality Control Specifications
tion is 1 to 40 µg/L sodium. The analyst may extend the range
for Standard Test Methods for Water Analysis
once its applicability has been ascertained.
NOTE 1—It is necessary to perform replicate analysis and take an
3. Terminology
average to accurately determine values at the lower end of the stated
range. 3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer
1.2 This test method is a graphite furnace atomic absorption
to Terminology D1129.
spectrophotometric method for the determination of trace
sodium impurities in ultra high purity water.
4. Summary of Test Method
1.3 This test method has been used successfully with a high
2
4.1 Sodium is determined by atomic absorption utilizing a
purity water matrix. It is the responsibility of the analyst to
graphite furnace for sample atomization.
determine the suitability of the test method for other matrices.
4.2 Asamplevolumeofseveralmicrolitres,dependingupon
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the theconcentrationoftheanalyte,isdepositedona graphitetube
housed within an electrical furnace, and the system is heated in
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- an inert gas environment.The sample is evaporated to dryness,
ashed (charred or pyrolyzed), and atomized.
bility of regulatory limitations prior to use.
4.3 Ground-stateatomsareproducedduringtheatomization
2. Referenced Documents
stage of the temperature program. The ground-state atoms
2.1 ASTM Standards:
absorb the energy at a specific wavelength produced from a
D1066 Practice for Sampling Steam
source as they are bombarded by the energy. The amount of
D1129 Terminology Relating to Water
energy absorbed is proportional to the concentration of the
D1192 Guide for Equipment for Sampling Water and Steam
analyte in the sample.
3
in Closed Conduits (Withdrawn 2003)
4.4 The absorption signal produced during atomization is
D1193 Specification for Reagent Water
recorded on a chart recorder or stored in microprocessor
D2777 Practice for Determination of Precision and Bias of
memory and compared to those standards taken through the
Applicable Test Methods of Committee D19 on Water
same process by means of an analytical curve.
D3370 Practices for Sampling Water from Closed Conduits
D3919 Practice for Measuring Trace Elements in Water by 4.5 A general guide for graphite furnace applications is
given in Practice D3919.
1
This test method is under the jurisdiction of ASTM Committee D19 on Water
5. Significance and Use
and is the direct responsibility of Subcommittee D19.03 on Sampling Water and
Water-Formed Deposits, Analysis of Water for Power Generation and Process Use,
5.1 Small quantities of sodium, 1 to 10 µg/L, can be
On-Line Water Analysis, and Surveillance of Water.
significantinhighpressureboilersystemsandinnuclearpower
Current edition approved July 1, 2006. Published July 2006. Originally approved
systems. Steam condensate from such systems must have less
in 1996. Last previous edition approved in 2000 as D6071 – 96 (2000). DOI:
10.1520/D6071-06.
than 10 µg/L. In addition, condensate polishing system efflu-
2
RP2712 Sub Program—Grab Sample Method Validation Report Results,
ents should have less than 1 µg/L. Graphite furnace atomic
Electric Power Research Institute, Palo Alto, CA 1987.
3
absorption spectroscopy (GFAAS) represents technique for
The last approved version of this historical standard is referenced on
www.astm.org. determining low concentrations of sodium.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6071 − 06
4
6. Interferences tee onAnalytical Reagents of theAmerican Chemical Society.
Other grades may be used, provided it is first ascertained that
...

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