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An Evaluation of Sample Dispersion Medias Used With Accelerated Solvent Extraction for the Extraction and Recovery of Arsenicals from Lfb and Dorm-2

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Abstract:An accelerated solvent extraction (ASE) device was evaluated as a semi-automated means for extracting arsenicals from quality control (QC) samples and DORM-2 [standard reference material (SRM)]. Unlike conventional extraction procedures, the ASE requires that the sample be dispersed in an inert dispersion media prior to the extraction. The need to disperse the sample in a support matrix prior to extraction is demonstrated by a 58% reduction in the extraction efficiency of arsenic (As Extraction Efficiency) from DORM-2 if the sample is not homogeneously suspended in the dispersion media.
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Citation:Gallagher, P. A., J. T. Creed, C. A. Schwegel, S. Murray, and X. Wei. An Evaluation of Sample Dispersion Medias Used With Accelerated Solvent Extraction for the Extraction and Recovery of Arsenicals from Lfb and Dorm-2. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 17(6):581-586, (2002).
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Contact: Mary P. O'Bryant - (919)-541-4871 or obriant.mary@epa.gov
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Division: Microbiological & Chemical Exposure Assessment Division
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Branch: Chemical Exposure Research Branch
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Product Type: Journal
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Published: 05/27/2002
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Related Entries:
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Bullet Item Speciation of Arsenic in Edible Biota to Support Risk Assessment Determination of Relative Source Contribution for Arsenic
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Last Updated on Monday, October 22, 2007
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