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Chemistry Programs & Projects

(showing 31 - 45 of 241)
High-Precision Isotopic Reference Materials
Last Updated Date: 05/18/2015

Recent innovative advances in the design and manufacture of isotope ratio mass spectrometers (IRMS) have revolutionized the study of natural and … more

Mercury Vapor Pressure Correlation
Last Updated Date: 05/18/2015

An apparent difference between the historical mercury vapor concentration equations used by the mercury atmospheric measurement community and a new … more

Fundamental Chemical Metrology
Last Updated Date: 05/18/2015

The Chemical Sciences Division serves as the Nation’s reference laboratory for chemical compositional measurements and standards to enhance U.S. … more

Potential Primary Measurement Tool for the Quantification of DNA
Last Updated Date: 05/18/2015

The accurate mass determination of DNA and other nucleic acids is of critical importance in many clinical diagnoses and in forensic and molecular … more

Study of Microheterogeneity in Solid Reference Materials
Last Updated Date: 05/18/2015

Microbeam X-ray fluorescence (µXRF) has been used nondestructively to investigate elemental heterogeneity by constructing two-dimensional maps of … more

Improving High-Performance Inductively-Coupled Plasma Optical Emission Spectrometry (HP-ICP-OES) Through Exact Matching
Last Updated Date: 05/18/2015

Using high-performance inductively coupled plasma optical emission spectrometry (HP-ICP-OES), relative expanded uncertainties on the order of 0.2 % … more

pH Metrology
Last Updated Date: 05/18/2015

The pH metrology program supports traceability for pH measurements. This traceability rests on primary pH measurements in an ideal electrochemical … more

Evaluation of Independent High-Precision Assay Procedures for a High-Purity Primary Standard Reagent
Last Updated Date: 05/18/2015

NIST assigns assay values for a suite of high-purity reagents using two techniques: coulometry and titrimetry. Coulometry is based on Faraday's … more

Standard Solution SRMs Provide Traceability for Millions of Measurements
Last Updated Date: 05/18/2015

For decades, NIST has provided the SRM 3100 series single-element standard solutions. The certified values are traceable to the International … more

Marine Environmental Metabolomics
Last Updated Date: 05/18/2015

NIST is developing NMR-based metabolomics for use as a tool to expand research on the impacts of environmental stressors on marine organisms. The … more

NIST Standard Reference Simulation Website
Last Updated Date: 04/15/2015

The Standard Reference Simulation Website is an ongoing project whose aim is to provide well-documented simulation results for a variety of … more

Gas properties for flow metering
Last Updated Date: 04/10/2015

Flow meters that rely on measuring the pressure drop across a laminar flow element can be accurately calibrated using a benign surrogate gas (such … more

Development of Enhanced mRNA Amplification using Microfluidics
Last Updated Date: 04/01/2015

In conjunction with NCI/NIH, NIST is developing methods to improve mRNA amplification from small biological samples. Typical sample processing … more

State-resolved Biomolecular Spectroscopies
Last Updated Date: 03/30/2015

Sensitive and fully state resolved spectroscopic methods in the terahertz (THz) and ultraviolet (UV) regions are being developed to investigate … more

Micronutrients Measurement Quality Assurance Program
Last Updated Date: 03/27/2015

The Micronutrients Measurement Quality Assurance Program , coordinated by the Chemical Sciences Division, supports measurement technology for … more

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