ASTM C1473-05

Standard Test Method for Radiochemical Determination of Uranium Isotopes in Urine by Alpha Spectrometry

SIGNIFICANCE AND USE
This test method is used to detect possible exposures to uranium isotopes from occupational operations.
SCOPE
1.1 This test method is applicable to the determination of uranium in urine at levels of detection dependent on sample size, count time, detector efficiency, background, and tracer yield. It is designed as a screening tool for detection of possible exposure of occupational workers.
1.2 This test method is designed for 50 mL of urine. This test method does not address the sampling protocol or sample preservation methods associated with its use.
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.

General Information

• Status: Historical
• Publication Date: 31-May-2005
• ICS: 11.100 - Laboratory medicine
• Technical Committee: C26 - Nuclear Fuel Cycle
• Drafting Committee: C26.05 - Methods of Test

Relations

• Replaces: ASTM C1473-00 - Standard Test Method for Radiochemical Determination of Uranium Isotopes in Urine by Alpha Spectrometry
• Effective Date: 01-Jun-2005
• Replaced By: ASTM C1473-11 - Standard Test Method for Radiochemical Determination of Uranium Isotopes in Urine by Alpha Spectrometry
• Effective Date: 15-Feb-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C1473–05
Standard Test Method for
Radiochemical Determination of Uranium Isotopes in Urine
1
by Alpha Spectrometry
This standard is issued under the fixed designation C1473; 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 eluted with 0.1 M hydrochloric acid solution. The separated
uranium is prepared for alpha spectrometric measurement
1.1 This test method is applicable to the determination of
either by electrodeposition onto a metal disk or coprecipitation
uranium in urine at levels of detection dependent on sample
with neodymium fluoride and filtration onto a membrane filter.
size, count time, detector efficiency, background, and tracer
yield.Itisdesignedasascreeningtoolfordetectionofpossible
4. Significance and Use
exposure of occupational workers.
4.1 This test method is used to detect possible exposures to
1.2 This test method is designed for 50 mL of urine. This
uranium isotopes from occupational operations.
test method does not address the sampling protocol or sample
preservation methods associated with its use.
5. Interferences
1.3 This standard does not purport to address all of the
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5.1 Thepresenceof Uintheurinesamplewillbemasked
safety concerns, if any, associated with its use. It is the
233 234
by the tracer addition. The alpha energies of U and U
responsibility of the user of this standard to establish appro-
cannot be fully resolved by alpha spectrometric measurement.
priate safety and health practices and determine the applica-
Atable of uranium isotope alpha energies is given inAppendix
bility of regulatory limitations prior to use.
X1. If neptunium is present in the sample in the plus four
oxidation state, it will co–elute with the uranium.
2. Referenced Documents
2
2.1 ASTM Standards:
6. Apparatus
C1000 Test Method for Radiochemical Determination of
6.1 Alpha Spectrometry System—Refer to Test Methods
Uranium Isotopes in Soil by Alpha Spectrometry
C1000, C1163, D3084, and D3648 for guidance.
C1163 Practice for Mounting Actinides for Alpha Spec-
6.2 Electrodeposition Apparatus—Refer to Practice C1284
trometry Using Neodymium Fluoride
for guidance.
C1284 Practice for Electrodeposition of the Actinides for
6.3 Neodymium Fluoride Precipitation—Refer to Test
Alpha Spectrometry
Method C1163 for guidance.
D1193 Specification for Reagent Water
6.4 Borosilicate Beakers or Flasks, 250 mL.
D3084 Practice for Alpha-Particle Spectrometry of Water
6.5 Borosilicate Beakers, 150 and 250 mL.
D3648 Practices for the Measurement of Radioactivity
6.6 Borosilicate Graduated Glass Cylinders, 5, 25, 100, and
1000 mL.
3. Summary of Test Method
232
6.7 Ion Exchange Columns, disposable polypropylene, with
3.1 A urine sample with U tracer solution added is
3
polyethylene frit,$5-mL capacity.
wet-ashed with nitric acid and hydrogen peroxide to destroy
6.8 Ion Exchange Column Reservoir, funnel, polypropy-
organic material. The uranium-bearing solution is converted to
lene, 100-mL capacity.
a hydrochloric acid medium. Uranium is absorbed on an anion
exchange column from a 9 M hydrochloric acid solution and
NOTE 1—See Fig. 1 for a typical ion exchange column-reservoir setup.
7. Reagents
7.1 Purity of Reagents—Reagent grade chemicals shall be
1
This test method is under the jurisdiction ofASTM Committee C26 on Nuclear
used in all tests. Unless otherwise indicated, it is intended that
Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Test
Methods.
the reagents conform to the specifications of the Committee on
Current edition approved June 1, 2005. Published June 2005. Originally
Analytical Reagents of theAmerican Chemical Society, where
approved in 2000. Last previous edition approved in 2000 as C1473 – 00. DOI:
10.1520/C1473-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Various column configurations are available from Bio-Rad Laboratories, Life
Standards volume information, refer to the standard’s Document Summary page on ScienceGroup,Hercules,CA;WhatmanLabSales,Hillsboro,OR;andPerkinElmer
the ASTM website. L:ife Sciences, Akron, OH.
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C1473–05
9. Sampling
9.1 Collect the urine sample in accordance with the site-
specific protocol.
9.2 Preserve the urine sample in accordance with the site-
specific protocol.
10. Calibration and Standardization
232
10.1 Ifatraceablestandard Usolutionisnotavailablefor
23
...