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Search Publications by: Nicholas Sharp (Fed)

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Displaying 1 - 6 of 6

Certification of Standard Reference Material(R) 2693a Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)

January 25, 2024
Author(s)
Thomas W. Vetter, Colleen E. Bryan Sallee, Brian Lang, Anthony F. Marlow, Jennifer Ness, Rick L. Paul, Adam L. Pintar, Bruce Scruggs, Nicholas Sharp, Maria Isabel Vega Martinez, John Sieber
Standard Reference Material (SRM) 2693a Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur) is intended for use in the evaluation of techniques employed in the determination of sulfur, mercury, chlorine, and ash in coal and materials of a similar matrix

Certification of Standard Reference Material(R) 1568c Rice Flour

July 29, 2022
Author(s)
Chuck Barber, Colleen E. Bryan Sallee, Monique Johnson, Shaun Kotoski, Rick L. Paul, Nicholas Sharp, Maria Isabel Vega Martinez, James H. Yen, Lee L. Yu, Laura Wood, John Sieber, Stephen Long
The National Institute of Standards and Technology (NIST) recently released SRM 1568c Rice Flour which has value assignments for over 30 analytes, including arsenic species. This material is intended to be used for the evaluation of methods for the

A new measurement of the 122Sb half-life

June 5, 2021
Author(s)
Giancarlo D'Agostino, Marco Di Luzio, Nicholas Sharp, Massimo Oddone
Following significant discrepancies observed in rescaling collected 122Sb -peak count rates to a reference time by decay corrections, we looked at the literature supporting the presently recommended 2.7238(2) d 122Sb half-life value. The reading

Combining secondary ion mass spectrometry image depth profiling and single particle inductively coupled plasma mass spectrometry to investigate the uptake and biodistribution of gold nanoparticles in Caenorhabditis elegans

May 20, 2021
Author(s)
Monique Johnson, Joe Bennett, Antonio Montoro Bustos, Shannon Hanna, Andrei Kolmakov, Nicholas Sharp, Elijah Petersen, Christopher Sims, Bryant C. Nelson, Patricia Lapasset
Analytical techniques capable of determining the spatial distribution and quantity (mass and/or particle number) of engineered nanomaterials in organisms are essential for characterizing nano-bio interactions and for nanomaterial risk assessments. Here, we

Application of INAA methods for KRISS infant forumla CRM analysis: Standardization of INAA at KRISS

November 15, 2019
Author(s)
Hana Cho, Kishore B. Dasari, Radojko Ja?imovi?, Rolf L. Zeisler, Nicholas Sharp, Sun-Ha Kim, Gwang Min Sun, Yong-Hyeon Yim
We have established an instrumental neutron activation analysis (INAA) method, including k0- based INAA, at the Korea Research Institute of Standards and Science (KRISS) for the certification of reference materials. As part of establishing INAA

Uranium Ion Yields from Monodisperse Uranium Oxide Particles

February 24, 2016
Author(s)
Nicholas E. Sharp, John D. Fassett, David S. Simons
Secondary ion mass spectrometry (SIMS) plays an important role in nuclear forensics through its ability to identify isotopic ratios of particles accurately and precisely from samples obtained by inspectors [1]. As the particle mass can be on the order of