NIST logo
NIST Home > Chemistry Programs and Projects 

Chemistry Programs & Projects

(showing 286 - 300 of 320)
Relative Intensity Correction Standards for Fluorescence and Raman Spectroscopy
Last Updated Date: 10/01/2012

Luminescence measurements have become the methods of choice for new clinical and biochemical analyses due to their high selectivity and … more

Nanoparticle Distribution in the Natural Environment
Last Updated Date: 10/01/2012

Given the substantial differences between nanoparticles (NPs) and typical organic and inorganic environmental contaminants, new methods and … more

Nanoparticle Accumulation and Distribution in Organisms
Last Updated Date: 10/01/2012

Given the substantial differences between nanoparticles (NPs) and typical organic and inorganic environmental contaminants, new experimental … more

Genotoxicity of Nanoparticles
Last Updated Date: 10/01/2012

As a result of their novel properties, nanoparticles are expected to be produced and incorporated into consumer products at exponentially … more

Computational Biology: Comarison of Cell Image Segmentation Algorithms
Last Updated Date: 07/10/2012

With the advent of automated data acquisition systems in conjunction with on-line imaging devices, the biological researcher is potentially … more

Infrared Imaging Beyond the Diffraction Limit
Last Updated Date: 07/09/2012

There are a variety of tools for characterizing nanoscale morphology and structure, such as scanning probe, scanning electron, and transmission … more

Primary Radioactivity Standardization of Ni-63
Last Updated Date: 06/27/2012

Ni-63 is of considerable interest and importance in radionuclidic metrology as well as for radiation protection surveillance around nuclear … more

Components of Variance in Liquid Scintillation Counting
Last Updated Date: 06/27/2012

As part of the standardization of the 239 Pu solution that was disseminated by NIST as Standard Reference Material (SRM) 4330C, a detailed study … more

Radon Binding to Water-Soluble Cryptophane
Last Updated Date: 06/27/2012

Collaboration on investigating the thermodynamics of radon binding with a new and novel class of cryptophane molecules is currently underway with … more

New Statistical Analysis Tools
Last Updated Date: 06/27/2012

Members of the Radioactivity Group (RG) have been actively collaborating with statisticians in the NIST Statistical Engineering Division to … more

Technetium-99m Primary Standardization and International Comparison
Last Updated Date: 06/27/2012

Technetium-99m ( 99m Tc) is used in two-thirds of all diagnostic nuclear medicine procedures in the United States. more

International Comparison of Pu-241
Last Updated Date: 06/27/2012

All of the plutonium isotopes, which have a very high biotoxicity, are man-made and result from various nuclear activities. Plutonium-241 is a … more

Blind Measurement Comparisons of the USA and UK Pb-210 National Standards
Last Updated Date: 06/27/2012

The National Institute of Standards and Technology (NIST), Radioactivity Group, and the National Physical Laboratory (NPL) of the UK, and the … more

New Standardization of Ra-228
Last Updated Date: 06/27/2012

Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235 U, 238 U, and 232 Th) are exceedingly important for … more

Standardization of Am-243
Last Updated Date: 06/27/2012

A new standard solution of 243 Am, an important radionuclide for the US and international environmental-measurements communities, was developed and … more

General Information:
301-975-NIST (6478)

100 Bureau Drive, Stop 1070
Gaithersburg, MD 20899-1070