U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 326 - 350 of 1843

The 2016 edition of the Art in Science of MicroTAS

April 21, 2017
Author(s)
Darwin R. Reyes-Hernandez
Dublin, Ireland beheld The 20th International Conference of Miniaturized Systems for Chemistry and Life Sciences (MicroTAS 2016) from October 23 to 27, 2016. The conference not only included a great technical program, but also outreach activities, an

Standardized Measurements of Collection Efficiency from Wipe-Sampling of Trace Explosives

April 10, 2017
Author(s)
Jennifer R. Verkouteren, Jeffrey A. Lawrence, Matthew E. Staymates, Edward R. Sisco
One of the limiting steps to detecting traces of explosives at screening venues is effective collection of the sample. Wipe-sampling is the most common procedure for collecting traces of explosives, and standardized measurements of collection efficiency

Efficient Simulation of Secondary Fluorescence via NIST DTSA-II Monte Carlo

March 17, 2017
Author(s)
Nicholas Ritchie
Secondary fluorescence, the final term in the familiar matrix correction triumvirate Z·A·F, is the most challenging for Monte Carlo models to simulate. In fact, only two implementations of Monte Carlo models commonly used to simulate electron probe x-ray

Believable Statements of Uncertainty

February 8, 2017
Author(s)
Richard M. Lindstrom
Nearly fifty years ago, two landmark papers appeared that should have cured the problem of ambiguous uncertainty statements in published data. Eisenhart’s paper in Science called for statistically meaningful numbers, and Currie’s Analytical Chemistry paper

Spatial variation in perfluoroalkyl acids in a population of wild American alligators (Alligator mississippiensis) at Merritt Island National Wildlife Refuge (MINWR) surrounding the Kennedy Space Center (KSC)

January 26, 2017
Author(s)
John Bowden, Jacqueline T. Bangma, Martin Jones, Russell H. Lowers, Frances Nilsen, Jessica L. Reiner, Thomas R. Rainwater, Stephen E. Somerville, Louis J. Guillette Jr.
This study aimed to quantify fourteen perfluoroalkyl acids (PFAAs) in the plasma of a population of alligators located at Merritt Island national Wildlife Refuge (MINWR). Male (n = 117) and female (n = 112) alligators were sampled in every month during

Lessons Learned from Monitoring Organic Contaminants in Three Decades of Marine Samples from the Pacific Basin Archived at the USA's Marine Environmental Specimen Bank

December 1, 2016
Author(s)
Stacy Schuur, Paul R. Becker, Colleen E. Bryan Sallee, Rebecca Pugh, Jared Ragland, Jessica Reiner, Jennifer Hoguet, Michele M. Schantz
The USA's Marine Environmental Specimen Bank (ESB) has archived marine wildlife collections dating back to 1976. Numerous lessons have been learned including collecting the correct species and tissues for environmental contaminant monitoring, developing

Comprehensive Assessment of Composition and Thermochemical Variability of Three Prototype Gas Turbine Fuels by GC/QToF-MS and the Advanced Distillation-Curve Method as a Basis of Comparison for Novel Fuel Development

October 26, 2016
Author(s)
Tara Lovestead, Jessica L. Burger, Nico Schneider, Thomas J. Bruno
Commercial and military aviation is faced with challenges that include high fuel costs, emissions, and supply chain security that result from the reliance on petroleum-based feedstocks. The development of alternative gas turbine fuels from renewable

Evaluation of chemical purity using quantitative 1H-nuclear magnetic resonance

September 28, 2016
Author(s)
Blaza Toman, Michael A. Nelson, Katrice A. Lippa
Chemical purity assessment using quantitative 1H-nuclear magnetic resonance spectroscopy is a method based on ratio references of mass and signal intensity of the analyte species to that of chemical standards of known purity. As such, it is an example of a

Application of the advanced distillation curve method for the characterization of two alternative transportation fuels prepared from the pyrolysis of polyethylene bags*

September 15, 2016
Author(s)
Thomas J. Bruno, Megan E. Harries, B. K. Sharma, Bidhya Kunwar
The properties of alternative fuels must be evaluated to determine their suitability for use in existing engines, either as blends with conventional petroleum products or as stand-alone substitutions (that is, drop in replacements). Alternative fuels made
Displaying 326 - 350 of 1843