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Displaying records 11 to 20 of 36 records.
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11. Development and Certification of Green Tea-Containing Standard Reference Materials
Published: 11/30/2011
Authors: Lane C Sander, Mary Bedner, Michael C. Tims, James H Yen, David Lee Duewer, Barbara J. Porter, Steven J Christopher, Russell D Day, Stephen E Long, John L Molloy, Karen E Murphy, Brian E Lang, Rachel A. Lieberman, Laura J Wood, M. Payne, M. C. Roman, J. M. Betz, A. NguyenPho, Katherine E Sharpless, Stephen A Wise
Abstract: A suite of three green tea-containing Standard Reference Materials (SRMs) has been issued by the National Institute of Standards and Technology (NIST). The materials are characterized for catechins, xanthine alkaloids, theanine, and toxic elements. ...

12. Measuring silver nanoparticle dissolution in complex biological and environmental matrices using UV-Visible absorbance
Published: 8/2/2011
Authors: Justin M Zook, Stephen E Long, Danielle Cleveland, Carly Lay Geronimo, Robert I. MacCuspie
Abstract: Distinguishing the toxic effects of nanoparticles (NPs) themselves from the well-studied toxic effects of their ions is a critical but challenging measurement for nanotoxicity studies and regulation. This measurement is especially difficult for silv ...

13. Measurements of Methylmercury, Ethylmercury, and Inorganic Mercury Species in a Whole Blood Standard Reference Material: SRM 955c Toxic Elements in Caprine Blood
Published: 10/28/2010
Authors: William C Davis, Stephen E Long
Abstract: Trace elemental speciation analysis is assuming more critical importance in nutritional and toxicological assessments, and despite the necessity to quantitatively differentiate elemental species in environmental and clinical samples, there are a limi ...

14. IMEP-28: Total Arsenic, Cadmium, Lead and Mercury in Food Supplements
Published: 10/30/2009
Authors: Lane C Sander, Stephen E Long, Steven J Christopher, Russell D Day, Karen E Murphy, Ines Baer, Beatriz de la Calle, Inge Verbist, Danny Vendelbo, Hakan Emteborg, Philip Taylor
Abstract: The Institute for Reference Materials and Measurements (IRMM) of the Joint Research Centre (JRC), a Directorate-General of the European Commission, operates the International Measurement Evaluation Programme IMEP. It organises interlaboratory compari ...

15. Demonstrating the Comparability of Certified Reference Materials
Published: 7/24/2009
Authors: David Lee Duewer, Katrice A Lippa, Stephen E Long, Karen E Murphy, Katherine E Sharpless, Lorna Tregoning Sniegoski, Michael James Welch
Abstract: Certified Reference Materials (CRMs) enable the meaningful comparison of measurement results over time and place. When CRMs are used to calibrate or verify the performance of a measurement system, results produced by that system can be related throu ...

16. Fish-Related Standard Reference Materials
Published: 2/1/2009
Authors: Michele M Schantz, Steven J Christopher, William C Davis, Russell D Day, Jennifer M Lynch, John R Kucklick, Stephen E Long, Elizabeth A Mackey, Barbara J. Porter, Dianne L Poster, Katherine E Sharpless, Gregory C Turk, Stephen A Wise
Abstract: The National Institute of Standards and Technology (NIST) has developed four Standard Reference Materials (SRMs) related to the monitoring of contaminants in fish and marine mammals: SRM 1588b Organics in Cod Liver Oil, SRM 1945 Organics in Whale Blu ...

17. Development and Certification of the New SRM 695 Trace Elements in Multi-Nutrient Fertilizer
Published: 10/1/2007
Authors: Elizabeth A Mackey, Mark P Cronise, Curtis N Fales, Robert Russ Greenberg, Stefan D Leigh, Stephen E Long, Anthony F Marlow, Karen E Murphy, Rabia Oflaz, John R Sieber, Laura J Wood, M. S. Rearick, Lee Lijian Yu, Stephen A. Wilson, Paul H. Briggs, Zoe A. Brown, J. Budahn, P. F. Kane, W L Marshall

18. Improved Certified Values for Total Mercury and Speciated Mercury in NIST Standard Reference Materials Using Isotope Dilution ICP-MS
Published: 10/1/2007
Authors: Stephen E Long, William C Davis, Steven J Christopher, Jacqueline L Mann, William R. Kelly

19. On the Certification of Cadmium at Trace and Ultratrace Levels in Standard Reference Materials Using ID ICP-MS
Published: 10/1/2007
Authors: Karen E Murphy, Stephen E Long, Robert D Vocke Jr.

20. Characterization of a Suite of Ginkgo-Containing Standard Reference Materials
Published: 9/1/2007
Authors: Catherine A Rimmer, S. Howerton, Katherine E Sharpless, Lane C Sander, Stephen E Long, Karen E Murphy, Barbara J. Porter, K. Putzbach, M. S. Rearick, Stephen A Wise, Laura J Wood, Rolf Louis Zeisler, Diane K. Hancock, James H Yen, J. M. Betz, A. NguyenPho, L. Yang, C. Scriver, S. N Willie, R. Sturgeon, B. Schaneberg, C. Nelson, J. Skamarack, M. Pan, L. Kerri, D. Gray, E. H. Waysek, A. Blatter, E. Reich

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