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Material Measurement Laboratory

Chemical Sciences Division

Projects/Programs

Displaying 101 - 118 of 118
Illustration of the five primary features of STAR software, depicted as a blue star.

Sample Tracking and Analytical Reporting (STAR)

Ongoing
STAR (formerly known as Marine STAR) will develop a web-based interface to provide easy access to sample information from the NIST Biorepository. Information will include, but is not limited to, sample availability, chemical analysis status and results, and links to publications. Metadata associated...

Seabird Tissue Archival and Monitoring Project (STAMP)

Ongoing
Seabirds are an important group of upper trophic-level marine organisms with potential for accumulating lipophilic chemical contaminants which have been linked to adverse health effects. Analyses of seabird tissues, particularly eggs, have played important roles in temporal and spatial ecosystem...
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...
Breathalyzer

Standards Development to Ensure Reliable Breath Analysis in the Field

Ongoing
Numerous volatile organic compounds (VOCs) have been identified in human breath. These compounds can be produced by the body or by organisms in the body (e.g., bacteria or viruses) and provide a non-invasive window into human health. Inexpensive point-of-care devices are being developed to diagnose...
Steroid Hormone Pathway Mapping

Steroid Hormone Suite Analysis

Ongoing
Steroid hormones are signaling molecules that are major regulators of development, reproduction, stress, and growth. Steroids are synthesized from cholesterol through a series of enzymes, resulting in hormones with distinct biological activities. Although hormones are similar in structure, and...

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...
Fish on a ruler to measure length, about 47 cm from head to tail.

Technological Advances in Aquaculture

Ongoing
According to the NOAA Fisheries of the U.S. report, in 2020 U.S. seafood consumption was estimated at ~6B pounds (~2.7 x 109 kg). Of that, 85% is imported and U.S. exports have seen a significant decline. Globally, the U.S. ranked only 18th in aquaculture production (2020). NIST aims to enhance the...

Traceability in Molecular Spectrophotometry

Ongoing
This program, sometimes referred to as the Optical Filters program, has supported the development, certification, and (as specified) recertification of Standard Reference Materials ® (SRMs ®) for the verification of the transmittance (absorbance) and wavelength scales of spectrophotometers in the...
Photography of gas cylinder storage facility with cylinders stored horizontally in movable cabinets.

Traceable Calibration Gases: SRMs, NTRMs, and Protocol Gases

Ongoing
The Gas Sensing Metrology Group prepares the highest level gas standards, known as Primary Standard Gas Mixtures based on precise gravimetric methods and accurate purity analysis. These Primary Standards are verified at NIST, stability confirmed through reanalysis over many years, and compared...
Online video tutorials education button in Laptop notebook computer screen. Play lesson concept. Vector illustration

Tutorials in Analytical Chemistry

Ongoing
Topic Links Laboratory Operations and Sample Processing Use of Analytical Balances Video N/A Volumetric Transfer of Liquids Video PowerPoint Determination of Liquid Density Video PowerPoint Preparation of Calibration Solutions Video PowerPoint Soxhlet Extractions Video PowerPoint Pressurized Fluid...
Dart biopsy collection from a free-ranging bottlenose dolphin

Vertebrate Endocrine Metrology in Non-Traditional Matrices

Paused
NIST collaborates with stakeholders to develop techniques for measuring hormone levels as part of animal health assessment. The process of capturing and transporting animals before sampling can induce stress, which may alter the hormone levels in the bloodstream. Therefore, the collection of blood...
Photograph of SRM 972a Vitamin D metabolites in Frozen Human Serum showing a labeled box and four bottles labeled level 1 to level 4.

Vitamin D Metabolites Quality Assurance Program (VitDQAP)

Completed
Interlaboratory comparison studies of the VitDQAP supported the reliability of vitamin D measurements, including determination of 25-hydroxyvitamin D2, 25-hydroxyvitamin D3, and 3- epi-25-hydroxyvitamin D3 in human serum and plasma. Results from the comparison studies helped participants to make...
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