Assessment of stability of trace elements in two natural matrix environmental standard reference materials: NIST-SRM 1547 Peach leaves and NIST-SRM 1566a Oyster Tissue |
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Authors: | E A Mackey R O Spatz |
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Institution: | (1) Analytical Chemistry Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8395, USA |
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Abstract: | The NIST program for environmental Standard Reference Materials (SRM) includes materials covering a range of matrices, mass
fraction values and analytes. For many SRMs, mass fraction data are accumulated, incidentally, over time, as these are used
routinely for quality assurance purposes. Although these are not formal stability studies, data generated may be useful in
assessing stability. To evaluate the potential for assessing material stability from incidental use of SRMs, results of neutron
activation analysis performed from 1992 through 2008 were compiled for SRM 1547 Peach Leaves and SRM 1566a Oyster Tissue.
Results indicate that incidental use of SRMs yields useful information on SRM stability. |
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Keywords: | Certified Reference Material Element analysis Neutron activation analysis Oyster tissue Peach leaves Stability |
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