Stability of the sodium content in selected botanical reference materials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00501267" target="_blank" >RIV/61389005:_____/18:00501267 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/18:00501267
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Stability of the sodium content in selected botanical reference materials
Original language description
Sodium mass fractions in NIST standard reference materials (SRM) SRM 1547 Peach Leaves and SRM 1515 Apple leaves determined by INAA in our laboratory in recent years has been higher than the certified values. Similarly, increased values were published for SRM 1547 by several other laboratories. The increased Na mass fractions was found also for freshly opened SRM 1547 bottle and for material originating from a different lab. Increased Na mass fractions were confirmed by ICP-MS analysis of both materials. Analysis of archived samples revealed that sodium mass fraction in materials stored in polyethylene capsules is in agreement with the certified values. The sodium content in the glass of SRM 1547 bottle was roughly 10 %. Direct measurement of the Na depth profile by micro-PIXE was not indicative whether Na is released, i.g., by a glass corrosion due to residual humidity in the botanical material. However, a model experiment with freshly prepared and pulverized peach leaves demonstrated that such a scenario is possible for leaf-based materials. Although the study was focused on two NIST materials, the process is possible for any material with rather low Na content.
Czech name
—
Czech description
—

Project
<a href="/en/project/GBP108%2F12%2FG108" target="_blank" >GBP108/12/G108: Preparation, modification and characterization of materials by radiation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Sborník přednášek 7. ročníku Referenční materiály a mezilaboratorní porovnávání zkoušek
ISBN
978-80-86380-98-8
ISSN
—
e-ISSN
—
Number of pages
7
Pages from-to
65-71
Publisher name
2THETA
Place of publication
Lednice
Event location
Lednice
Event date
Nov 5, 2018
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
—

Similar results(10)