Standard Test Method for Measuring Anionic Contaminants in High-Purity Water by On-Line Ion Chromatography

SCOPE
1.1 This test method covers on-line analysis of high-purity water by the ion chromatography technique. This test method is applicable for measuring various anionic contaminants in high-purity water, typically in the range of 0.01 to 100 g/L. This test method is used to determine the concentration of acetate, formate, chloride, fluoride, phosphate, nitrate, and sulfate in a continuously flowing sample. The range of the test method is only as good as the reagent water available for preparing standards. At extremely low concentrations, 1.0 g/L, preparing standards is difficult, and extra care must be taken in their preparation. The sample may have to be conditioned from higher pressures and temperatures to conditions that are suitable for use by on-line instruments.
1.2 Online sample analysis of flowing streams does not lend itself to collaborative studies due to the nature of the sample and the possibility of contamination that may result from handling the sample as part of the collaborative study. Therefore this standard test method is not based on the results of a collaborative study but is intended to provide the best possible guidance for doing this type of analysis.
1.3 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.

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Publication Date
31-May-2005
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ASTM D5996-05 - Standard Test Method for Measuring Anionic Contaminants in High-Purity Water by On-Line Ion Chromatography
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5996 – 05
Standard Test Method for
Measuring Anionic Contaminants in High-Purity Water by
1
On-Line Ion Chromatography
This standard is issued under the fixed designation D5996; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1192 GuideforEquipmentforSamplingWaterandSteam
3
in Closed Conduits
1.1 This test method covers on-line analysis of high-purity
D1193 Specification for Reagent Water
water by the ion chromatography technique. This test method
D2777 Practice for Determination of Precision and Bias of
is applicable for measuring various anionic contaminants in
Applicable Test Methods of Committee D19 on Water
high-purity water, typically in the range of 0.01 to 100 µg/L.
D3370 Practices for Sampling Water from Closed Conduits
This test method is used to determine the concentration of
D3864 Guide for Continual On-Line Monitoring Systems
acetate, formate, chloride, fluoride, phosphate, nitrate, and
for Water Analysis
sulfate in a continuously flowing sample.The range of the test
D4453 Practice for Handling of Ultra-Pure Water Samples
method is only as good as the reagent water available for
D5542 TestMethodsforTraceAnionsinHighPurityWater
preparing standards. At extremely low concentrations, <1.0
by Ion Chromatography
µg/L, preparing standards is difficult, and extra care must be
D5810 Guide for Spiking into Aqueous Samples
taken in their preparation. The sample may have to be
D5847 Practice for Writing Quality Control Specifications
conditioned from higher pressures and temperatures to condi-
for Standard Test Methods for Water Analysis
tions that are suitable for use by on-line instruments.
1.2 Onlinesampleanalysisofflowingstreamsdoesnotlend
3. Terminology
itself to collaborative studies due to the nature of the sample
3.1 Fordefinitionsoftermsusedinthistestmethod,referto
and the possibility of contamination that may result from
Terminology D1129.
handling the sample as part of the collaborative study. There-
3.2 Definitions of Terms Specific to This Standard:
fore this standard test method is not based on the results of a
3.2.1 analytical column, n—a column used to separate the
collaborative study but is intended to provide the best possible
anions of interest.
guidance for doing this type of analysis.
3.2.2 analytical column set, n—a combination of one or
1.3 This standard does not purport to address all of the
more guard columns followed by one or more analytical
safety concerns, if any, associated with its use. It is the
columns.
responsibility of the user of this standard to establish appro-
3.2.3 anion suppressor device, n—a device that is placed
priate safety and health practices and determine the applica-
between the analytical columns and the detector. Its purpose is
bility of regulatory limitations prior to use.
to inhibit detector response to the ionic constituents in the
2. Referenced Documents eluant, so as to lower the detector background and at the same
2
time enhance detector response to the ions of interest.
2.1 ASTM Standards:
3.2.4 breakthrough volume, n—the maximum sample vol-
D1066 Practice for Sampling Steam
ume that can be passed through a concentrator column before
D1129 Terminology Relating to Water
the least tightly bound ion of interest is eluted. All of the
columns in series contribute to the overall capacity of the
1
This test method is under the jurisdiction ofASTM Committee D19 on Water
analytical column set.
and is the direct responsibility of Subcommittee D19.03 on Sampling of Water and
3.2.5 concentrator column, n—an ion exchange column
Water-Formed Deposits, Surveillance of Water, and Flow Measurement of Water.
used to concentrate the ions of interest and thereby increase
CurrenteditionapprovedJune1,2005.PublishedJuly2005.Originallyapproved
in 1996. Last previous edition approved in 2000 as D5996–96(2000). DOI:
method sensitivity.
10.1520/D5996-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5996 – 05
3.2.6 eluant, n—theionicmobilephaseusedtotransportthe used to produce bacteria-free water.These organic compounds
sample through the analytical column. may also contribute to low pr
...

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