DOE EML: U-02-RC: Isotopic Uranium in Biological and Environmental Materials - Summary
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Official Method Name  | EPA Approved- ISOTOPIC URANIUM IN BIOLOGICAL AND ENVIRONMENTAL MATERIALS |
| Current Revision | EML Procedures Manual HASL-300, Volume 1, 28th Ed.(1997) |
| Media | VARIOUS |
| Instrumentation | Alpha Spectrometer/Counter |
| Method Subcategory | Radiochemical |
| Method Source |  DOE EML | Contact Information: | U.S. Department of Energy Environmental Measurements Laboratory 201 Varick St. 5th Floor New York, NY 10012-4811 |
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| URL: | http://www.eml.doe.gov | |
| Citation | DOE EML Procedures Manual HASL-300, Volume 1, 28th Ed.(1997) | Citation Information: | The EML Procedures Manual, HASL-300, has served as a significant resource for scientists throughout the world who collect samples, perform field measurements or analyze samples. The Manual includes sections on Quality Assurance, Sampling Techniques, Radiation Measurements, Analytical Chemistry Procedures, Radionuclide Data, EML Special Facilities, and Specifications for Equipment and Supplies. For further information, contact DOE EML at the following: U.S. Department of Energy Environmental Measurements Laboratory, 201 Varick St, 5th Floor, New York, NY 10012-4811 Email: Website: http://www.eml.doe.gov |
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| Brief Method Summary | Uranium from acid leached, dry-ashed and wet-ashed materials is equilibrated with 232U tracer, and is isolated by anion exchange chromatography. The separated U isotopes are microprecipitated for alpha spectrometry (Hindman, 1983; Sill and Williams, 1981; Welford et al., 1960). |
| Scope and Application | This procedure has been used to analyze soft tissue, vegetation, water, and air filter samples to determine isotopic uranium. |
| Applicable Concentration Range | None given. |
| Interferences | None given. |
| Quality Control Requirements | Reagent blanks must be analyzed with each set batch of samples to correct the U results. |
| Sample Handling | None given. |
| Maximum Holding Time | None given. |
| Relative Cost | $51 to $200 |
| Sample Preparation Methods |
This method has 1 analyte associated with it.
| Analyte | DetectionLevel | Bias | Precision | Pct FalsePositive | Pct FalseNegative | SpikingLevel |
| Uranium-234(13966-29-5) | 0.000 Bq/5000 min | 85% Yield | 0.99 % RSD (SL) |
| Precision Descriptor Notes: | Precision value calculated from counter background and count time data. |
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| Detection Level Note: | Lower Limit of Detection (LLD) calculated using Pasternack and Harley (1971) procedure in which the smallest amount of sample activity will yield a net count for which there is a confidence at a predetermined level that activity is present. The alpha value utilized is 0.05. |
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| Revision | PDF/Link |
| EML Procedures Manual HASL-300, Volume 1, 28th Ed.(1997) |
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