ASTM D5811-08
(Test Method)Standard Test Method for Strontium-90 in Water
Standard Test Method for Strontium-90 in Water
SIGNIFICANCE AND USE
This test method was developed to measure the concentration of 90Sr in non-process water samples. This test method may be used to determine the concentration of 90Sr in environmental samples.
SCOPE
1.1 This test method covers the determination of radioactive 90Sr in environmental water samples (for example, non-process and effluent waters) in the range of 0.037 Bq/L (1.0 pCi/L) or greater.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This test method has been used successfully with tap water. It is the user's responsibility to ensure the validity of this test method for samples larger than 1 L and for waters of untested matrices.
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. For specific hazard statements, see Section 9.
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Designation: D5811 − 08 AnAmerican National Standard
Standard Test Method for
1
Strontium-90 in Water
This standard is issued under the fixed designation D5811; 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 D7282Practice for Set-up, Calibration, and Quality Control
of Instruments Used for Radioactivity Measurements
1.1 This test method covers the determination of radioac-
90
tive Sr in environmental water samples (for example, non-
3. Terminology
process and effluent waters) in the range of 0.037 Bq/L (1.0
3.1 Definitions—For definitions of terms used in this test
pCi/L) or greater.
method, refer to Terminology D1129.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information 4. Summary of Test Method
only.
4.1 This test method is based on the utilization of solid
1.3 This test method has been used successfully with tap phase extraction of strontium from water samples with detec-
water.Itistheuser’sresponsibilitytoensurethevalidityofthis tionoftheradioactivestrontiumbygrossbetagasproportional
counting.
test method for samples larger than 1 L and for waters of
untested matrices.
4.2 An aliquant of the sample is measured into a beaker,
1.4 This standard does not purport to address all of the strontiumcarrieradded,digestedwithnitricacid,sorbedonan
safety concerns, if any, associated with its use. It is the
ion exchange column, eluted, evaporated to dryness, dissolved
responsibility of the user of this standard to establish appro- in nitric acid (8M), selectively sorbed on a solid phase
priate safety and health practices and determine the applica-
extraction column, eluted with dilute nitric acid, dried on a
bility of regulatory limitations prior to use.Forspecifichazard planchet, and counted for beta radiation.
statements, see Section 9.
4.3 Fig. 1 shows a flow diagram for this method.
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 This test method was developed to measure the concen-
90
D1129Terminology Relating to Water
tration of Sr in non-process water samples. This test method
90
D1193Specification for Reagent Water
maybeusedtodeterminetheconcentrationof Srinenviron-
D1890Test Method for Beta Particle Radioactivity ofWater
mental samples.
D2777Practice for Determination of Precision and Bias of
6. Interferences
Applicable Test Methods of Committee D19 on Water
D3370Practices for Sampling Water from Closed Conduits
6.1 Significant amounts of stable strontium present in the
D3648Practices for the Measurement of Radioactivity
sample will interfere with the yield determination. If it is
D4448GuideforSamplingGround-WaterMonitoringWells
known or suspected that natural strontium is present in the
D5847Practice for Writing Quality Control Specifications
sample at levels that will compromise the determination of the
for Standard Test Methods for Water Analysis
chemical yield, blank sample aliquots to which no strontium
D6001Guide for Direct-Push Ground Water Sampling for
carrier is added shall be analyzed to determine the natural
Environmental Site Characterization
strontium content. The amount of natural strontium contained
in the sample shall be reflected when calculating the yield
correction factor.
1
This test method is under the jurisdiction ofASTM Committee D19 on Water
6.2 Strontium-89 present in the sample will cause a high
andisthedirectresponsibilityofSubcommitteeD19.04onMethodsofRadiochemi-
89 90
cal Analysis.
bias in proportion to the Sr/ Sr ratio. This technique is not
Current edition approved April 1, 2008. Published May 2008. Originally 89
applicablewhenitissuspectedorknownthat Srispresentin
approved in 1995. Last previous edition approved in 2000 as D5811–00. DOI:
the sample.
10.1520/D5811-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.3 Strontium nitrate (Sr(NO ) ) is hygroscopic. This
3 2
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
chemicalpropertymayadduncertaintyinthegravimetricyield
Standardsvolumeinformation,refertothestandard’sDocumentSummarypageon
the ASTM website. determination.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5811 − 08
FIG. 1 Flow Diagram for the Procedure
3
7. Apparatus 7.4 Planchets, stainless steel to match calibration source.
7.1 Analytical Balance, 0.0001 g.
8. Reagents and Materials
7.2 Low Background Gas Proportional Beta Counting Sys-
8.1 Purity of Reagents—Reagent grade chemical
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D 5811–00 Designation:D5811–08
Standard Test Method for
1
Strontium-90 in Water
This standard is issued under the fixed designation D5811; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
90
1.1 This test method covers the determination of radioactive Sr in environmental water samples (for example, non-process
and effluent waters) in the range of 0.037 Bq/L (1.0 pCi/L) or greater.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This test method has been used successfully with tap water. It is the user’s responsibility to ensure the validity of this test
method for samples larger than 1 L and for waters of untested matrices.
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. For specific hazard statements, see Section 9.
2. Referenced Documents
2
2.1 ASTM Standards:
D1129 Terminology Relating to Water Water
2
D1193 Specification for Reagent Water Water
D1890 Test Method for Beta Particle Radioactivity of Water Water
2
D2777 Practice for Determination of Precision and Bias ofApplicableTest Methods of Committee D-19D19 onWater Water
2
D3370 Practices for Sampling Water from Closed Conduits Conduits
3
D3648Practices for the Measurement of Radioactivity Practices for the Measurement of Radioactivity
D4448 Guide for Sampling Ground-Water Monitoring Wells
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
D6001 Guide for Direct-Push Ground Water Sampling for Environmental Site Characterization
D7282 Practice for Set-up, Calibration, and Quality Control of Instruments Used for Radioactivity Measurements
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology D1129.
4. Summary of Test Method
4.1 This test method is based on the utilization of solid phase extraction of strontium from water samples with detection of the
radioactive strontium by gross beta gas proportional counting.
4.2 An aliquant of the sample is measured into a beaker, strontium carrier added, digested with nitric acid, sorbed on an ion
exchange column, eluted, evaporated to dryness, dissolved in nitric acid (8M), selectively sorbed on a solid phase extraction
column, eluted with dilute nitric acid, dried on a planchet, and counted for beta radiation.
4.3 Fig. 1 shows a flow diagram for this method.
5. Significance and Use
90
5.1 This test method was developed to measure the concentration of Sr in non-process water samples. This test method may
90
be used to determine the concentration of Sr in environmental samples.
6. Interferences
6.1 Significant amounts of stable strontium present in the sample will interfere with the yield determination. If it is known or
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD-19D19onWaterandisthedirectresponsibilityofSubcommitteeD19.04onMethodsofRadiochemical
Analysis.
Current edition approved July 10, 2000.April 1, 2008. Published October 2000.May 2008. Originally published as D5811–95.approved in 1995. Last previous edition
D5811–95.approved in 2000 as D5811–00.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
, Vol 11.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5811–08
FIG. 1 Flow Diagram for the Procedure
suspected that natural strontium is present in the sample at levels that will compromise the determination of the chemical yield,
blank sample aliquots to which no strontium carrier is added shall be analyzed to determine the natural strontium content. The
amount of natural strontium contained in the sample shall be used to correctreflected when calculating the yield correction factor.
89 90
6.2 Strontium-89presentinthesamplewillcauseahighbiasinproportiontothe Sr/ Sr
...
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