DOE RESL: CHEM-TP-SP.2: Sample Reconstitution
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Official Method Name
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Sample Reconstitution |
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Current Revision
| May 1999 |
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Media
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OTHER |
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Instrumentation
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Preparatory Procedure |
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Method Subcategory
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Sampling/Preparation |
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Method Source
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Citation
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Brief Method Summary
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The samples, as received, contain paper pulp, and are 2% in concentrated hydrochloric acid or nitric acid. Samples containing hydrochloric acid also might contain a holding reductant if nuclides of iodine are of interest. The paper pulp and other particulate material are filtered, wet ashed in a Teflon beaker with nitric and perchloric acids, and the solution is evaporated to fumes of perchloric acid. The hydrochloric and hydrofluoric acid wash of the container is added to this perchloric acid fraction and the solution is evaporated until a milliliter of perchloric acid remains. The perchloric acid solution is mixed with the original filtrate and transferred back into the original container, thus providing a stable, homogeneous sample. |
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Scope and Application
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This procedure is applicable to the recovery and dissolution of the insoluble fractions present in liquid samples from nuclear power facilities and to which acid and paper pulp were added at the time of collection. This procedure normally is not used with environmental water samples |
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Applicable Concentration Range
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Low-level >0-104; Medium >104-106; High level >106 cpm/sample. |
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Interferences
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(A) Volatile element loss: Volatile elements present in the filterable fraction or container was can be lost. |
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Quality Control Requirements
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QC procedures based on internal laboratory requirements for radiochemical analysis. |
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Sample Handling
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Safety glasses or face shield, lab coat, and appropriate chemical resistant gloves (nitrile or natural rubber gloves when handling hydrofluoric acid) to protect skin and eyes should be worn. |
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Maximum Holding Time
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None given. |
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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