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You searched on: Author: stephen long

Displaying records 31 to 40.
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31. Preparation and Characterization of a Suite of Ephedra-Containing Standard Reference Materials
Published: 6/1/2006
Authors: Katherine E Sharpless, D L Anderson, J. M. Betz, Therese A. Butler, S. G. Capar, J. Cheng, C. Fraser, M. L. Gay, G. Gardner, D W Howell, T. Ihara, J. W. Lam, Stephen E Long, M. McCooeye, Elizabeth A Mackey, W. R. Mindak, S. Mitvalsky, Karen E Murphy, Karen W Phinney, A. NguyenPho, Barbara J. Porter, M. C. Roman, Lane C Sander, Mary B Satterfield, C. Scriver, R. E. Sturgeon, Jeanice M Brown Thomas, Robert D Vocke Jr., Stephen Albert Wise, Laura J Wood, L. Yang, James H Yen, G. C. Ziobro

32. Determination of Mercury Content in a Shallow Fern Core from Summit, Greenland by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
Published: 11/1/2005
Authors: Stephen E Long, Jacqueline L Mann, William R. Kelly, C. A. Shuman

33. An Accurate and Sensitive Method for the Determination of Methylmercury in Biological Specimens Using GC-ICPMS with Solid Phase Microexctraction
Published: 12/1/2004
Authors: William C Davis, Stacy S Vander-Pol, Michele Miller Schantz, Stephen E Long, Steven J Christopher

34. Certification of NIST Standard Reference Material 1575a Pine Needles and Results of an International Laboratory Comparison
Series: Journal of Research (NIST JRES)
Report Number: 260-156
Published: 6/1/2004
Authors: Elizabeth A Mackey, Donald A. Becker, Rabia D. Oflaz, Robert Russ Greenberg, Richard Mark Lindstrom, Lee Lijian Yu, Laura J Wood, Stephen E Long, William R. Kelly, Jacqueline L Mann, Bruce S MacDonald, Stephen A. Wilson, Zoe A. Brown, Paul H. Briggs, James Budhan, Rick L Paul

35. Direct Determination of Mercury at Picomole/L Levels in Bottled Water by Isotope Dilution Cold-Vapor Generation Inductively Coupled Plasma Mass spectrometry
Published: 7/24/2003
Authors: Jacqueline L Mann, Stephen E Long, William R. Kelly

36. Determination of Mercury in SRM Crude Oils and Refined Products by Isotope Dilution Cold Vapor ICP-MS using Closed-System Combustion
Published: 7/1/2003
Authors: William R. Kelly, Stephen E Long, Jacqueline L Mann

37. Determination of Sodium in Blood Serum by Inductively Coupled Plasma Mass Spectrometry
Published: 11/1/2002
Authors: Stephen E Long, Thomas W Vetter
Abstract: Owing to its importance as a serum electrolyte, sodium is determined routinely in clinical laboratories. In the United States, the accuracy of these measurements is assessed through a number of proficiency testing programs. Clinical measurements ar ...

38. Development of Isotope Dilution Cold Vapor Inductively Coupled Plasma Mass Spectrometry and Its Application to the Certification of Mercury in NIST Standard Reference Materials
Published: 4/1/2001
Authors: Steven J Christopher, Stephen E Long, M. S. Rearick, John David Fassett

39. Definitive Method Certification of Clinical Analytes in Lyophilized Human Serum: NIST Standard Reference Material (SRM) 909b
Published: 5/1/1998
Authors: C. S. Phinney, Karen E Murphy, Michael James Welch, P M Ellerbe, Stephen E Long, Kenneth W Pratt, Lorna Tregoning Sniegoski, M. S. Rearick, Thomas W Vetter, Robert D Vocke Jr.

40. On-line Isotope Dilution Determination of Mercury Species by Solid-Phase Microextraction GC-ICPMS
Published: Date unknown
Authors: William C Davis, Steven J Christopher, Stephen E Long, William R. Kelly
Abstract: This preliminary technical note reports on the development of an on-line isotope dilution (ID) method that is applicable for the determination of inorganic and organic mercury species in marine samples. The method is demonstrated on NIST Standard Re ...

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