Research Topics
| Catherine A RimmerSummaryAffiliation: National Institute of Standards and Technology Country: USA Publications
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Detail Information
Publications
Shape selectivity in embedded polar group stationary phases for liquid chromatographyCatherine A Rimmer
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD, 20899 8392, USA
Anal Bioanal Chem 394:285-91. 2009..The shape recognition characteristics of the phases appear to be directly related to the density of the embedded polar ligands and the temperature of the separation, consistent with trends observed with conventional hydrocarbon phases...
Selectivity of long chain stationary phases in reversed phase liquid chromatographyCatherine A Rimmer
Chemical Science and Technology Laboratory, Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899 8392, USA
Anal Bioanal Chem 382:698-707. 2005..Monomeric and polymeric C(30) phases were shown to yield excellent separations of the tocopherol isomers while the polymeric C(30) and polyethylene phases were more appropriate to the separation of carotenoids...
Characterization of a suite of ginkgo-containing standard reference materialsCatherine A Rimmer
National Institute of Standards and Technology, Gaithersburg, MD 20899 8392, USA
Anal Bioanal Chem 389:179-96. 2007..The SRMs are primarily intended for method validation and for use as control materials to support the analysis of dietary supplements and related botanical materials...
Development of saw palmetto (Serenoa repens) fruit and extract standard reference materialsMichele M Schantz
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Anal Bioanal Chem 392:427-38. 2008..These SRMs will complement other reference materials currently available with concentrations for similar analytes and are part of a series of SRMs being developed for dietary supplements...
Preparation and characterization of standard reference material 3276, carrot extract in oilKatherine E Sharpless
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899 8392, USA
Anal Bioanal Chem 389:207-17. 2007..This material is intended for use as a primary control material when assigning values to in-house (secondary) control materials and for validation of analytical methods for measurement of these analytes in similar matrices...
Preparation and characterization of standard reference material 1849 infant/adult nutritional formulaKatherine E Sharpless
National Institute of Standards and Technology, Analytical Chemistry Division, Gaithersburg, MD 20899 8390, USA
J AOAC Int 93:1262-74. 2010....
Determination of organic acids in Vaccinium berry standard reference materialsMelissa M Phillips
Analytical Chemistry Division, Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Anal Bioanal Chem 398:425-34. 2010..The combined data from these methods was used for the assignment of organic acid levels in the seven candidate SRMs...
Dietary supplement laboratory quality assurance program: the first five exercisesMelissa M Phillips
National Institute of Standards and Technology, Analytical Chemistry Division, Material Measurement Laboratory, Gaithersburg, MD 20899 8392, USA
J AOAC Int 94:803-14. 2011..S. Food and Drug Administration. The DSQAP has conducted five exercises to date, with total participation including more than 75 different laboratories and many more individual analysts...
Determination of fat-soluble vitamins and carotenoids in standard reference material 3280 multivitamin/multielement tablets by liquid chromatography with absorbance detectionJeanice B Thomas
National Institute of Standards and Technology, Analytical Chemistry Division, Gaithersburg, MD 20899 8392, USA
J AOAC Int 94:815-22. 2011..SRM 3280 is primarily intended for use in validating analytical methods for the determination of selected vitamins, carotenoids, and elements in multivitamin/multielement tablets and similar matrixes...
Isotope dilution liquid chromatography - mass spectrometry methods for fat- and water-soluble vitamins in nutritional formulationsKaren W Phinney
Analytical Chemistry Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
Anal Chem 83:92-8. 2011..When possible, stable isotope labeled internal standards were employed for quantification...
Determination of Bitter Orange alkaloids in dietary supplements standard reference materials by liquid chromatography with ultraviolet absorbance and fluorescence detectionKarsten Putzbach
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
J Chromatogr A 1156:304-11. 2007..The method described was used for the assignment of the levels of the predominant alkaloids in three candidate standard reference materials containing Bitter Orange...
Polycyclic aromatic hydrocarbons (PAHs) in a coal tar standard reference material--SRM 1597a updatedStephen A Wise
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
Anal Bioanal Chem 398:717-28. 2010..SRM 1597a is currently the most extensively characterized SRM for PAHs and PASHs...
Chromatographic methods for the quantification of free and chelated gadolinium species in MRI contrast agent formulationsDanielle Cleveland
Analytical Chemistry Division, Chemical Science and Technology Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899 8391, USA
Anal Bioanal Chem 398:2987-95. 2010..However, fluorescence and online ID-ICP-MS might usefully be applied as qualitative, rapid screening procedures for the presence of free gadolinium ions...
Synthesis and characterization of C13 to C18 stationary phases by monomeric, solution polymerized, and surface polymerized approachesCatherine A Rimmer
Chemical Science and Technology Laboratory, Analytical Chemistry Division, National Institute of Standards and Technology, 100 Bureau Drive Stop 8392, Gaithersburg, MD 20899 8392, USA
J Chromatogr A 1007:11-20. 2003..Over the narrow range of bonded phase lengths investigated, shape selectivity is more dependent on density than phase length...
Determination of bitter orange alkaloids in dietary supplement Standard Reference Materials by liquid chromatography with atmospheric-pressure ionization mass spectrometryKarsten Putzbach
RCC Ltd, Zelgliweg 1, CH 4452, Itingen, Switzerland
Anal Bioanal Chem 389:197-205. 2007..This method enabled the determination of the dominant alkaloid synephrine and other minor alkaloids in a variety of dietary supplement SRMs...
The measurement and meaning of void volumes in reversed-phase liquid chromatographyCatherine A Rimmer
Department of Chemistry and Biochemistry, Florida State University, Tallahassee 32306-4390, USA
J Chromatogr A 965:219-32. 2002..At this time, there is still no consensus for the best method of measurement, and workers are urged to critically examine values they measure, to insure they are at least physically possible...
