Results 11 to 20 of about 76,962 (259)

Opinion: Multi-Mycotoxin Reference Materials

open access: yesFoods, 2022
The analysis of mycotoxins in food and feed using liquid chromatography coupled with mass spectrometry is considered advantageous because the hyphenated technology enables simultaneous determination of multiple mycotoxins.
Kai Zhang, Melissa Phillips
doaj   +1 more source

Preparation of Trace Gold and Gold Ore Reference Materials

open access: yesYankuang ceshi, 2021
BACKGROUND From 1986 to 2007, different grades of trace gold certified reference materials (background grade, anomaly grade, medium grade and high grade) and mineral gold certified reference materials (mineralization grade, cutoff grade and concentrate ...
YANG Rong   +3 more
doaj   +1 more source

The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures

open access: yesСтандартные образцы, 2019
Currently, in the Russian Federation, the metrological traceability of certified reference materials of the composition of gas mixtures in cylinders under pressure produced by manufacturers of certified reference materials is carried out in accordance ...
L. A. Konopelko   +2 more
doaj   +1 more source

Construct specification equations: ‘Recipes’ for certified reference materials in cognitive measurement

open access: yesMeasurement: Sensors, 2021
Construct specification equations (CSEs), providing a comprehensive understanding of the construct purported to be measured and how a collection of items works together causally, are candidate ‘recipes for certified reference materials’ (CRM).
J. Melin   +4 more
doaj   +1 more source

Solution to Certified Reference Material recipe challenge [PDF]

open access: yesAnalytical and Bioanalytical Chemistry, 2013
The winners of the Certified Reference Material recipe challenge (published in volume 405 issue 13) are: Katherine Sharpless, Chemical Science Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD 208 99, USA and Mallory J. Morris, Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390
Catherine A, Rimmer, Melissa M, Phillips
openaire   +2 more sources

Development of сertified reference materials set for opened porosity of solid substances and materials (imitators)

open access: yesСтандартные образцы, 2017
The article deals with data of research for development of certified reference materials set for opened porosity of solid substances and materials (imitators) (OPTB SO UNIIM Set) Certified Reference Materials GSO 10583-2015.
E. P. Sobina
doaj   +1 more source

Preparation of Seven Certified Reference Materials for Floodplain Sediments

open access: yesYankuang ceshi, 2018
BACKGROUND Floodplain sediment, which is an important sampling media for geochemical mapping, can represent the average distribution of elements in the basins and has universal applicability. At present, there is no floodplain sediment reference material
LIU Mei   +6 more
doaj   +1 more source

Certified reference material for coal in accordance with the PN-EN ISO 17034:2017-03 standard and ISO GUIDE 35:2017

open access: yesEnvironmental & Socio-economic Studies, 2023
Due to an absence of domestic certified reference materials for coal on the Polish market, an attempt was made to manufacture a new and innovative product tailored to its needs.
Więcek Katarzyna   +3 more
doaj   +1 more source

Preparation of the Reference Materials for Rb-Sr and Sm-Nd Isotope Analysis

open access: yesYankuang ceshi, 2021
BACKGROUND: One Rb-Sr certified reference materials (GBW04411) and one Sm-Nd certified reference materials (GBW04419) for geological age, which are potash feldspar and basalt respectively, were produced and certified about 30 years ago.
TANG Suo-han   +4 more
doaj   +1 more source

Certified Reference Material of Tylosin Tartrate

open access: yesMeasurement Standards. Reference Materials, 2023
To date, antibiotics are often used in the treatment of infectious diseases in medicine and veterinary medicine, as well as growth promoters in animal husbandry. The uncontrolled use of antibiotics leads to antibiotic residues in food products that are easily transmitted to humans through food chains.
A. Yu. Gulyaeva   +4 more
openaire   +1 more source

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