You searched on: Author: Stephen Long
Displaying records 1 to 10 of 40 records.
Resort by: Date / Title
1. Development of Two Fine Particulate Matter Standard Reference Materials (<4 µm and <10 µm) for the Determination of Organic and Inorganic Constituents
Michele Miller Schantz, Danielle Cleveland, Nathanael A Heckert, John R Kucklick, Stefan D Leigh, Stephen E Long, Jennifer M Lynch, Karen E Murphy, Rabia Oflaz, Adam L Pintar, Barbara J. Porter, Savelas A Rabb, Stacy S Vander-Pol, Stephen Albert Wise, Rolf Louis Zeisler
Two new Standard Reference Materials (SRMs), SRM 2786 Fine Particulate Matter (< 4 µm) and SRM 2787 Fine Particulate Matter (< 10 µm) have been developed in support of the US Environmental Protection Agency‰s National Ambient Air Quality Standards fo ...
2. Global DNA methylation loss associated with mercury contamination and aging in the American
alligator (Alligator mississippiensis)
Frances Nilsen, John A Bowden, Brittany L Catron, Colleen E Bryan, Stephen E Long, Benjamin B Parrott, Stephen E Somerville, Ted Lange, Patrick Delaney, Arnold Brunell, Louis J Guillette
Mercury is a widespread environmental contaminant with exposures eliciting a well-documented
catalog of negative outcomes in animals. Yet, our knowledge regarding the underlying mechanisms
by which mercury exposures exert these effects remains in ...
3. Urinary iodine and stable isotope analysis to examine habitat influences on thyroid hormones
among coastal dwelling American alligators
Ashley Sun Park Boggs, Heather J. Hamlin, James C. Nifong, Brittany L Catron, Russell H Lowers, Thomas M. Galligan, Stephen E Long, Louis J Guillette Jr.
The American alligator, a freshwater species, is known to forage in marine environments which
could lead to increased dietary uptake of iodine, a nutrient necessary for the production of
thyroid hormones. To explore the influence of dietary iodi ...
4. Measuring silver nanoparticle dissolution in complex biological and environmental matrices using
UV/visible absorbance measurements
Special Publication (NIST SP)
Justin M Zook, Robert MacCuspie, Stephen E Long, Elijah J Petersen
This special publication is one in a series stemming from the National Nanotechnology Initiative
(NNI) Nano-EHS Research Strategy which identified Nanomaterial Measurement Infrastructure as one of
the essential areas of research needed in order t ...
5. Certification of Elements in and Use of Standard Reference Material 3280 Multivitamin/Multielement Tablets
Gregory C. Dr. (Gregory C.) Turk, Katherine E Sharpless, Steven J Christopher, Danielle Cleveland, Russell D Day, Stephen E Long, Elizabeth A Mackey, Anthony F Marlow, Rick L. Paul, John R Sieber, Rabia Oflaz, Laura J Wood, Lee Lijian Yu, Rolf Louis Zeisler, Stephen Albert Wise, James H Yen, E. Greene, J. Harnly, I-P Ho, Joseph M Betz, R. Q. Thompson, Candace Jongsma
Standard Reference Material (SRM) 3280 Multivitamin/Multielement Tablets was issued by the National Institute of Standards and Technology (NIST) in 2009 and has certified and reference mass fraction values for 13 vitamins, 26 elements, and 2 caroteno ...
6. Determination of Trace Sulfur in Biodiesel and Diesel Standard Reference Materials by Isotope Dilution Sector Field Inductively Coupled Plasma Mass Spectrometry
Steven J Christopher, Stephen E Long, Renata Amais, Joaquim N¿ga
A method is described for quantification of sulfur at low concentrations on the order of 10 µg g-1 in biodiesel and diesel fuels using double isotope dilution and sector field inductively coupled plasma mass spectrometry (ID-SF-ICP-MS). Closed vessel ...
7. Development of a Standard Reference Material for Metabolomics Research
Karen W Phinney, Guillaume Ballihaut, Mary Bedner, Johanna Camara, Steven J Christopher, William C Davis, Nathan G. Dodder, Brian E Lang, Stephen E Long, Mark S Lowenthal, Elizabeth A. McGaw, Karen E Murphy, Bryant C Nelson, Jocelyn L. Prendergast, Jessica L Reiner, Catherine A Rimmer, Lane C Sander, Michele Miller Schantz, Katherine E Sharpless, Lorna Tregoning Sniegoski, Susan Shu Cheng Tai, Jeanice M Brown Thomas, Thomas W Vetter, Michael James Welch, Stephen Albert Wise, Laura J Wood, William F Guthrie, Robert Charles Hagwood, Stefan D Leigh, James H Yen, Nien F Zhang, Madhu Chaurhary-Webb, Huiping Chen, Bridgette Haynes, Donna J LaVoie, Leslie F McCoy, Shahzad S Momin, Neelima Paladugula, Elizabeth C Pendergrast, Christine M Pfeiffer, Carissa D Powers, Zia Fazili-Qari, Daniel Rabinowitz, Michael E Rybak, Rosemary L Schleicher, Mary Xu, Mindy Zhang, Arthur L Castle, Brandi S Benford, Gauthier Eppe
8. Fast and accurate determination of K, Ca, and Mg in human serum by using sector field ICP-MS
Lee Lijian Yu, William C Davis, Yoana Y. Nuevo Ordonez, Stephen E Long
Electrolytes in serum are important biomarkers for skeletal and cellular health. The levels of electrolytes are monitored by measuring the Ca, Mg, K, Na in blood serum. Many reference methods have been developed for the determination of Ca, Mg, and ...
9. A simple and sensitive HPLC-ICP-MS method for the accurate determination of Vitamin B12 in Fortified Breakfast Cereals and Multivitamin Tablet Reference Materials
Siva K. Chinthalapati, Lee Lijian Yu, John E Schiel, Stephen E Long
A sensitive high performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry (ICP-MS) method has been developed for the determination of vitamin B12. The method was based on efficient isocratic separation with a ...
10. Fast standard addition method for LA-ICPMS using a spinning platform
John L Molloy, Stephen E Long, Fanny Claverie, Julian Malherbe, Naomi Bier
A method has been developed for the fast and easy determination of Pb, Sr, Ba, Ni, Cu, and Zn, which are of geological and environmental interest, in solid samples by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS) using a samp ...