Improving iodine homogeneity in NIST SRM 1548a Typical Diet by cryogenic grinding
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F15%3A00445105" target="_blank" >RIV/61389005:_____/15:00445105 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00769-015-1134-3" target="_blank" >http://dx.doi.org/10.1007/s00769-015-1134-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00769-015-1134-3" target="_blank" >10.1007/s00769-015-1134-3</a>
Alternative languages
Result language
angličtina
Original language name
Improving iodine homogeneity in NIST SRM 1548a Typical Diet by cryogenic grinding
Original language description
NIST SRM 1548a Typical Diet has a certified iodine mass fraction value of 0.759 mg kg(-1), with a rather large expanded uncertainty (relative value 13.6 %). This might be due to the iodine inhomogeneous distribution in the pooled food material. We have proven that cryogenic grinding of NIST SRM 1548a (at the temperature of liquid nitrogen) yields a free-flowing material, with the standard deviation due to a random inhomogeneity that is lower (by a factor of 3) compared with the original material. We have also proven that no change in the certified iodine value and no contamination with other elements present (even at the sub-A mu g kg(-1) level) occurred during the cryogenic grinding process. Thus, we have obtained a quality control material that setsup more stringent requirements on the validation and quality control procedures of the measurement of iodine mass fraction in complex food matrices.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Accreditation and Quality Assurance
ISSN
0949-1775
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
189-194
UT code for WoS article
000355207700004
EID of the result in the Scopus database
2-s2.0-84929943475