Results 11 to 20 of about 371,175 (351)

Preparation of Certified Reference Materials for Soil Limit Water Content

open access: yesYankuang ceshi, 2021
BACKGROUND Soil limit water content is an important basis for fine-grained soil classification and engineering property evaluation. Additionally, it is an important evaluation index for clay exploration and industrial utilization. Inaccurate test results
ZHAO Xiu-feng   +4 more
doaj   +1 more source

Stability of sodium mass fraction in agricultural certified reference materials

open access: yesTalanta Open, 2022
Certified values in reference materials are considered the best estimates of true values, being used for validation and verification of analytical methods.
M.A. Bacchi   +3 more
doaj   +1 more source

Comparison of methods for certification of stannic, stibium and lead traces in reference materials for steel

open access: yesСтандартные образцы, 2017
Development and introduction of new metallurgical technologies, new additional chemical compound indexes controlled in metallurgical materials demand to develop the new, more advanced methods of analytical control. The particular attention should be paid
I. V. Khodakovskaya   +2 more
doaj   +1 more source

Application of microbiological (certified) reference materials

open access: yesWater Science and Technology, 1997
The development of microbiological reference materials (RMs) has succesfully led to the certification of six materials (CRMs) and to the production of a wider range of non-certified reference materials. Both materials (RM and CRM) are prepared in the same way.
Mooijman, KA, Havelaar, AH
openaire   +3 more sources

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 and certification of wheat flour reference material for tenuazonic acid and tentoxin using isotope dilution- liquid chromatography-tandem mass spectrometry

open access: yesZhongguo shipin weisheng zazhi, 2021
ObjectiveA method for the preparation and certification of the reference material of tenuazonic acid(TeA) and tentoxin (TEN) in wheat flour was developed.MethodsThe reference material of TeA and TEN in wheat flour was prepared from grain which naturally ...
XIE Ji'an   +6 more
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

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

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

The certification of different mass fractions of MON-Ø4Ø32-6 in soya bean powder Certified Reference Materials ERM®-BF410ap, ERM®-BF410bp, ERM®-BF410cp, ERM®-BF410dp and ERM®-BF410ep [PDF]

open access: yes, 2017
This report describes the production of a set of Certified Reference Materials (CRMs), ERM BF410ap, bp, cp, dp and ep, which are certified for their GTS 40-3-2 soya bean (unique identifier MON-Ø4Ø32-6) event mass fractions.
CORBISIER PHILIPPE   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy