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Author: steven christopher
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31. Development of Isotope Dilution Cold Vapor Inductively Coupled Plasma Mass Spectrometry and Its Application to the Certification of Mercury in NIST Standard Reference Materials
Steven J Christopher, Stephen E Long, M. S. Rearick, John D. Fassett
32. On-line Isotope Dilution Determination of Mercury Species by Solid-Phase Microextraction GC-ICPMS
William C Davis, Steven J Christopher, Stephen E Long, William R. Kelly
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 ...
33. Metal Complexes and Free Radical Toxicity Derived From Pfiesteria piscicida
Peter D. Moeller, Kevin Beauchesne, Kevin Huncik, William C Davis, Steven J Christopher, Andrew Gelasco, Pamela Riggs-Gelasco
Pfiesteria piscicida represents one of many dinoflagellate species inhabiting inter-coastal waterways and estuaries. This organism has been implicated in the production of a potent ichthyotoxin affecting estuarine fish as well as humans. The prese ...
34. National Marine Analytical Quality Assurance Program:Results and Description of the NIST/NOAA 2005 Interlaboratory Comparison Exercise for Trace Elements in Marine Mammals
NIST Interagency/Internal Report (NISTIR)
Steven J Christopher, Rebecca S Pugh, Michael B. Ellisor, Elizabeth A Mackey, Rabia Oflaz, Barbara J. Porter, Kathie J Bealer, John R Kucklick, Paul R Becker, T K Rowles
NIST helps benchmark and improve the quality of analytical data gathered on the marine environment by administering annual interlaboratory comparison exercises through several programs, including the National Marine AnalyticalQuality Assurance Progra ...