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NIST Micronutrients Measurement Quality Assurance Program Winter and Summer 2017 Comparability Studies
Data provided by National Institute of Standards and Technology
The Micronutrients Measurement Quality Assurance Program (MMQAP) was coordinated by the Chemical Sciences Division and supported measurement technology for selected fat- and water-soluble vitamins and carotenoids in human serum. This program was initiated in 1984 by the National Cancer Institute Division of Cancer Prevention and Control to ensure the long-term reliability of the measurements made while studying the possible cancer chemoprevention roles of these compounds.
Tags: interlaboratory comparisons,Biosciences and Health,Energy,Environment and Climate,Food and Nutrition,fat-soluble vitamins,Carotenoids,Vitamin C,Human Serum,interlaboratory study,
Modified: 2024-02-22
Views: 0
NIST Atomic Spectra Database - SRD 78
Data provided by National Institute of Standards and Technology
This database provides access and search capability for NIST critically evaluated data on atomic energy levels, wavelengths, and transition probabilities that are reasonably up-to-date. The Atomic Spectroscopy Data Center has carried out these critical compilations. The Data Center is located in the Physical Measurement Laboratory at the National Institute of Standards and Technology (NIST).
Tags: cesium,chlorine,chromium,cobalt,columbium,copernicium,copper,curium,darmstadtium,database,deuterium,doubly-charged,dubnium,dysprosium,einsteinium,element,energy levels,erbium,europium,fermium,flerovium,fluorine,francium,gadolinium,gallium,germanium,gold,ground states,hafnium,hassium,helium,holmium,hydrogen,indium,iodine,ionization potentials,ionization-energies,ionization-limits,ionized-atoms,iridium,iron,mendelevium,mercury,molybdenum,multiply-charged,neodymium,neon,neptunium,neutral,nickel,niobium,nitrogen,nobelium,osmium,oxygen,palladium,phosphorus,platinum,plutonium,polonium,potassium,praseodymium,promethium,protactinium,quadruply-charged,radium,rhenium,rhodium,roentgenium,rubidium,ruthenium,rutherfordium,samarium,scandium,seaborgium,selenium,silicium,silicon,silver,singly-charged,sodium,spectra,spectral lines,spectroscopy,spectrum,strontium,sulfur,sulphur,tantalum,technetium,tellurium,terbium,thallium,thorium,thulium,tin,titanium,transition probabilities,triply-charged,tritium,tungsten,ununbium,ununhexium,ununoctium,ununpentium,ununquadium,ununseptium,ununtrium,unununium,uranium,vanadium,wavelengths,xenon,ytterbium,yttrium,zinc,zirconium,krypton,kurchatovium,lawrencium,lanthanum,lead,lithium,livermorium,lutetium,magnesium,manganese,meitnerium,Atomic,Atomic Spectroscopy,Radon,actinium,aluminium,aluminum,americium,antimony,argon,arsenic,astatine,atom,atomic physics,atomic property,atomic-ions,barium,berkelium,beryllium,bismuth,bohrium,boron,bromine,cadmium,calcium,californium,carbon,cerium,
Modified: 2024-02-22
Views: 0
Certified values of iodine in CRMs of food matrices in mg/kg units. The uncertainties are expanded uncertainties at approximately 95% confidence.
Data provided by National Institute of Standards and Technology
A comparison of the expanded uncertainty for certified values of iodine in food matrix CRMs. The CRMS were found by searching The European Virtual Institute for Speciation Analysis (EVISA) database using the terms "Iodine" and "Certified" in the Material category. The uncertainties are expanded uncertainties at approximately 95% confidence.
Tags: food,nutrition,dietary supplements,Standard Reference materials,reference materials,SRM,RM,Food and Nutrition,
Modified: 2024-02-22
Views: 0
An approach for identification and determination of arsenic
Data provided by National Institute of Standards and Technology
A method for the identification and determination of arsenosugars in the extract of kelp
Tags: kelp,arsenosugar,arsenic species,INAA,LC-ICP-MS,identification,IT-TOF,microwave digestion,Food and Nutrition,
Modified: 2024-02-22
Views: 0
SRM 1632d Trace Elements in Coal (Bituminous)
Data provided by National Institute of Standards and Technology
Standard Reference Material 1632d Trace Elements in Coal (Bituminous) - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques used in the analysis of coals and materials of a similar matrix. A unit of SRM 1632d consists of 50 g of bituminous coal that was ground to pass a 250 µm (60 mesh) sieve, homogenized, bottled under an argon atmosphere, and sealed in an aluminized bag. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal,sulfur,mercury,chlorine,trace elements,Energy,
Modified: 2024-02-22
Views: 0
SRM 1633c Trace Elements in Coal Fly Ash
Data provided by National Institute of Standards and Technology
SRM 1633c Trace Elements in Coal Fly Ash - This Standard Reference Material (SRM) is intended for use in the evaluation of analytical methods for the determination of constituent elements in coal fly ash or materials of a similar matrix. SRM 1633c is a bituminous coal fly ash that was sieved through a nominal sieve opening of 74 µm (200 mesh) and then blended to assure homogeneity. A unit of SRM 1633c consists of 75 g of powdered material. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal fly ash,sulfur,mercury,chlorine,trace elements,Energy,
Modified: 2024-02-22
Views: 0
SRM 1635a Trace Elements in Coal (Subbituminous)
Data provided by National Institute of Standards and Technology
SRM 1635a Trace Elements in Coal (Subbituminous) - This Standard Reference Material (SRM) is intended primarily for the evaluation of techniques used in the analysis of coals and materials of a similar matrix. A unit of SRM 1635a consists of 50 g of subbituminous coal that was ground to pass a 250 µm (60 mesh) sieve, homogenized, bottled under an argon atmosphere, and sealed in an aluminized bag. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal,sulfur,mercury,chlorine,trace elements,Energy,
Modified: 2024-02-22
Views: 0
SRM 2682c Subbituminous Coal (Nominal Mass Fraction 0.5 % Sulfur)
Data provided by National Institute of Standards and Technology
Standard Reference Material 2682c Subbituminous Coal (Nominal Mass Fraction 0.5 % Sulfur) - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques used in the analysis of coals and materials of a similar matrix. A unit of SRM 2682c consists of 50 g of subbituminous coal that was ground to pass a 250 µm (60 mesh) sieve, homogenized, packaged in an amber glass bottle under an argon atmosphere, and then sealed in an aluminized bag. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal,sulfur,mercury,chlorine,Energy,
Modified: 2024-02-22
Views: 0
SRM 2683c Bituminous Coal (Nominal Mass Fraction 2 % Sulfur)
Data provided by National Institute of Standards and Technology
SRM 2683c Bituminous Coal (Nominal Mass Fraction 2 % Sulfur) - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques employed in the determination of sulfur, mercury, and chlorine in coal and materials of a similar matrix. A unit of SRM 2683c consists of 50 g of bituminous coal ground to pass a 250 µm (60 mesh) sieve, homogenized, packaged in an amber glass bottle under an argon atmosphere, and sealed in an aluminized bag. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal,sulfur,mercury,chlorine,Energy,
Modified: 2024-02-22
Views: 0
SRM 2684c Bituminous Coal (Nominal Mass Fraction 3 % Sulfur)
Data provided by National Institute of Standards and Technology
Standard Reference Material 2684c Bituminous Coal (Nominal Mass Fraction 3 % Sulfur) - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques used in the analysis of coals and materials of a similar matrix. A unit of SRM 2684c consists of 50 g of bituminous coal that was ground to pass a 212 µm (70 mesh) sieve, homogenized, packaged in an amber glass bottle under an argon atmosphere, and then sealed in an aluminized bag. This data is public in the Certificate of Analysis for this material.
Tags: SRM,Standard Reference Material,coal,sulfur,mercury,chlorine,Energy,
Modified: 2024-02-22
Views: 0
