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Topic Area: Chemical Analysis

Displaying records 11 to 20 of 137 records.
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11. Cold Neutron Activation Analysis, a Nondestructive Technique for Hydrogen Level Assessment in Zirconium Alloys
Topic: Chemical Analysis
Published: 6/1/2012
Authors: Rick L Paul, Adrien Couet, Arthur Motta, Robert Comstock
Abstract: We propose a novel use of a non-destructive technique to quantitatively assess hydrogen concentration in zirconium alloys. The technique, called Cold Neutron Prompt Gamma Activation Analysis (CNPGAA), is based on measuring prompt gamma rays following ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908357

12. Environmental Metabolomics
Topic: Chemical Analysis
Published: 3/15/2012
Author: Daniel W Bearden
Abstract: The application of metabolomics in the field of environmental science or ecology, which has developed based substantially on NMR spectroscopic approaches, is a fast paced, rapidly developing field which seems to be poised to help re-frame the discu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909756

13. Measurements and Modeling Study on a High-Aromatic Diesel Fuel
Topic: Chemical Analysis
Published: 1/31/2012
Authors: Bret Windom, Marcia L Huber, Thomas J Bruno, A L Lown, C T Lira
Abstract: The increasing cost of diesel fuel, potential for supply disruptions, and environmental concerns have resulted in a great deal of research to improve the performance and efficiency of diesel engines. This includes significant efforts in the reformul ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909948

14. Predictive Gold Nanocluster Formation Controlled by Metal-Ligand Complexes
Topic: Chemical Analysis
Published: 1/9/2012
Authors: John M. Pettibone, Jeffrey W Hudgens
Abstract: The formation of ligand-protected transition metal nanoclusters in size-selective syntheses is driven by the inherent properties of the protecting ligands. We have previously reported the selective, monodisperse product formation of phosphine protect ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908225

15. Comparison of Diesel Fuel Oxygenates with Composition-Explicit Distillation Curve Method Part 4: Alcohols, Aldehydes, and Butanoic Acid
Topic: Chemical Analysis
Published: 1/2/2012
Authors: Thomas J Bruno, Jessica Lynne Burger, Evgenii Baibourine
Abstract: There is a great deal of interest in formulating oxygenated diesel fuels that produce low particulate emissions. In this paper, the fourth in a series of papers on the properties of mixtures of diesel fuel with oxygenating additives, we present the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909951

16. Recommended Auger Parameters for 42 Elemental Solids
Topic: Chemical Analysis
Published: 12/4/2011
Author: Cedric John Powell
Abstract: Values of the Auger parameter are presented for 42 elemental solids. These values were determined from evaluated Auger-electron kinetic energies and photoelectron binding energies (BEs). Small adjustments were made to earlier values of photoelectron ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909448

17. Development and Certification of Green Tea-Containing Standard Reference Materials
Topic: Chemical Analysis
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. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906814

18. TDRM/TDLM Workshop on Reference Materials and Laboratory Accreditation at the AOAC Annual Meeting 2011
Topic: Chemical Analysis
Published: 11/29/2011
Authors: Catherine A Rimmer, Melissa Meaney Phillips, Hendrik Emons, Jane Weitzel, John Budin, Donna Zink
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910132

19. Molecular Layer-by-Layer Deposition of Highly Crosslinked Polyamide Membranes for Reverse Osmosis Applications
Topic: Chemical Analysis
Published: 11/19/2011
Authors: Peter M. Johnson, Joonsung (Joonsung) Yoon, Jennifer Y. Kelly, John A. (John A) Howarter, Christopher M Stafford
Abstract: In membranes for reverse osmosis and nanofiltration, the discriminating layers consist of an interfacially polymerized polyamide film on a porous support. For reverse osmosis membranes, the dominant commercial interfacial film is a crosslinked netwo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908946

20. Chromatographic Sample Collection from Two Phase (gas + liquid) Flows
Topic: Chemical Analysis
Published: 10/12/2011
Authors: Thomas J Bruno, Bret Windom
Abstract: A particularly challenging sample presentation in analytical chemistry is a flowing stream that consists of both a gas and liquid phase, in the situation in which an analysis is needed for both phases, separately. In these cases, the vapor and liqui ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908129