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Material Measurement Laboratory / Chemical Sciences Division

Inorganic Chemical Metrology Group

Projects/Programs

Displaying 26 - 42 of 42
Food Triangle

Measurements and Standards to Support Nutrition Labeling

Ongoing
Well-characterized certified reference materials are needed by laboratories in the food testing and nutrition communities to facilitate compliance with labeling laws and improve the accuracy of information provided on product labels so that consumers can make good choices. As a result of the
Illustration showing examples of acidic, neutral and alkaline pH values ranging from 0 to 14 that include battery, stomach acid, lemon, soda, tomato, coffee, milk, water, blood, egg white, stomach tablets, ammonia solution, soap, bleach and drain cleaner.

pH Metrology

Ongoing
The suite of NIST pH SRMs forms the basis for pH measurements in the United States, and pH is the most-often-measured chemical quantity. Hence this NIST work directly or indirectly impacts a large number of users in industry, government, and academia. One of the most critical set of users is in
Word cloud with word Method as the prominent word

New Chemical Measurement Methods

Ongoing
The Biochemical and Exposure Science Group (BESG) located at the Hollings Marine Laboratory is focused on advancing measurement techniques to effectively detect compounds of emerging concern. The BESG has a long history of developing accurate and precise analytical methods for emerging organic
Graphical Depiction of the Microwave Induced Combustion Process for S Determination in Coal SRMs

New Methods for Measurement of Sulfur in Fossil Fuels

Ongoing
NIST has a long history of developing high accuracy analytical methods and SRM materials for trace elements in fossil fuels. NIST has applied the microwave induced combustion methodology in combination with isotope dilution analysis for sulfur determinations, representing the first-reported
photo collage of meats, cheese, eggs, fish, and shellfish

NIST Food Safety Program

Ongoing
The Food Safety Program at the National Institute of Standards and Technology (NIST) provides advanced analytical chemistry and quantitative biology to ensure that food is free of contaminants and allergens and is authentic, promoting U.S. manufacturers’ participation in domestic and foreign markets
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NIST Ocean Carbon Measurements

Ongoing
NIST is committed to sustaining the quality of ocean carbon measurements by developing capabilities to provide certified reference materials for the ocean carbonate system measurements and by conducting research to understand fundamental elements of the ocean carbon thermodynamic system. NIST Ocean
Cannabis

NIST Tools for Cannabis Laboratory Quality Assurance

Ongoing
Since the 1970s, cannabis (marijuana and hemp) and its constituent, Δ 9-tetrahydrocannabinol or THC, have been classified as Schedule I controlled substances. Seized evidence is tested by forensic laboratories, which verify the identity of the plant through macro- and microscopic evaluation and the
Photo montage with images of a sea turtle, sea lion, whale, and dolphins.

Pacific Marine Mammal Health Assessments (PMMHA)

Ongoing
Pacific Marine Mammal Health Assessments (PMMHA), which began in Fall 2010, are an expansion of NIST marine mammal health assessment collaborations that began in 2002 with bottlenose dolphin wild populations. NIST has a history of involvement in marine mammal health assessment related work
Stylized illustration of a DNA molecule with associated figures that denote analytical measurements

Potential Primary Measurement Tool for the Quantification of DNA

Ongoing
The biotechnology industry relies primarily on absorbance and fluorescence methodologies to assess DNA mass. However, these measurements can be seriously compromised by impurities in the DNA preparations or state of the DNA itself. These techniques are also not traceable to the SI because the
Photograph of a packaged unit of SRM 2700 Hexavalent chromium in Contaminated Soil (low Level)

Standard Reference Materials for Hexavalent Chromium in Contaminated Soil

Completed
During the last century, chromate and dichromate chemical production facilities processed considerable amounts of chromite ore for industrial manufacturing purposes. The waste material from these operations called chromite ore processing residue (COPR) was disposed of in waste sites across the
Photograph of SRM 3103a showing a labeled clear glass ampoule and labeled box against a blue background.

Standard Solution SRMs Provide Traceability for Millions of Measurements

Ongoing
Literally millions of measurements of elemental composition are performed each year worldwide. The vast majority of these measurements depend upon reference materials for establishing traceability of results to the SI. Leveraged through commercial CRM producers, the NIST SRM 3100 series provides an

Study of Microheterogeneity in Solid Reference Materials

Ongoing
Presently there are a variety of analytical techniques that are served by few or no reference materials due to the small sample sizes they require. NIST currently certifies solid reference materials at or above the 100 mg mass level in most cases with no mention of the effect of using smaller sample