Application of chemometric tools for homogeneity and stability evaluation during the preparation of a powdered milk laboratory reference material for inorganic analysis

2020 ◽  
Vol 12 (8) ◽  
pp. 1055-1063
Author(s):  
Adilson S. Santos ◽  
Liz O. dos Santos ◽  
Ivanice F. dos Santos ◽  
Kelly R. dos Santos ◽  
Sergio L. C. Ferreira
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Inorganic Analysis ◽  
Stability Evaluation ◽  
Powdered Milk ◽  
Laboratory Reference ◽  
Chemometric Tools

Powdered milk and its derivatives are widely consumed worldwide, which require the development of reference materials for the evaluation of analytical methodologies that are developed for the analysis of these samples.

Homogeneity study of a corn flour laboratory reference material candidate for inorganic analysis

2015 ◽  
Vol 178 ◽  
pp. 287-291 ◽  
Author(s):  
Ana Maria Pinto dos Santos ◽  
Liz Oliveira dos Santos ◽  
Geovani Cardoso Brandao ◽  
Danilo Junqueira Leao ◽  
Alfredo Victor Bellido Bernedo ◽  
...  
Keyword(s):  
Reference Material ◽  
Inorganic Analysis ◽  
Homogeneity Study ◽  
Corn Flour ◽  
Laboratory Reference

ICP-MS AND ICP-AES ANALYSIS OF PLANT REFERENCE MATERIALS

2019 ◽  
Vol 85 (6) ◽  
pp. 11-24
Author(s):  
I. V. Nikolaeva ◽  
A. A. Kravchenko ◽  
S. V. Palessky ◽  
S. V. Nechepurenko ◽  
D. V. Semenova
Keyword(s):  
Reference Material ◽  
Mass Spectrometer ◽  
Reference Materials ◽  
Atomic Emission ◽  
Icp Ms ◽  
Lithium Metaborate ◽  
Relative Standard ◽  
Microwave System ◽  
Total Analysis ◽  
Siberian Pine

Two methods — ICP-MS and ICP-AES are used for certification of the new reference material — needles of Siberian pine (NSP-1). Techniques of the analysis include decomposition of plant samples in two different ways: acid digestion in a microwave system MARS-5 and lithium metaborate fusion followed by ICP-MS and ICP-AES analysis of the solutions. Simultaneous determinations of all the elements were carried out in low, medium and high resolution using SF-mass-spectrometer ELEMENT and atomic-emission spectrometer IRIS Advantage with external calibrations and internal standards (In — ICP-MS, Sc —ICP-AES). Middle and high resolutions of ICP mass spectrometer were used for interference corrections. Data obtained by ICP-MS and ICP-AES with different decomposition techniques are in good agreement. The ICP-MS and ICP-AES techniques have been validated by the analysis of three plant reference materials: LB-1 (leaf of a birch), Tr-1 (grass mixture) and EK-1 (Canadian pondweed). These techniques were used for the determination of 38 elements in the new reference material NSP-1. Relative standard deviations for most of the determined elements were below 10%. Combination of ICP-MS and ICP-AES techniques for certification of the new reference material makes it possible to expand the set of elements to be determined and to reduce the total analysis time.

scholarly journals Development and certification of a reference material for zearalenone in maize germ oil

2021 ◽  
Author(s):  
Juliane Riedel ◽  
Sebastian Recknagel ◽  
Diana Sassenroth ◽  
Tatjana Mauch ◽  
Sabine Buttler ◽  
...  
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Mass Fraction ◽  
High Performance ◽  
Certified Reference Materials ◽  
Maximum Level ◽  
Whole Process ◽  
Commission Regulation ◽  
Maize Oil ◽  
Maize Germ

AbstractZearalenone (ZEN), an estrogenic mycotoxin produced by several species of Fusarium fungi, is a common contaminant of cereal-based food worldwide. Due to frequent occurrences associated with high levels of ZEN, maize oil is a particular source of exposure. Although a European maximum level for ZEN in maize oil exists according to Commission Regulation (EC) No. 1126/2007 along with a newly developed international standard method for analysis, certified reference materials (CRM) are still not available. To overcome this lack, the first CRM for the determination of ZEN in contaminated maize germ oil (ERM®-BC715) was developed in the frame of a European Reference Materials (ERM®) project according to the requirements of ISO Guide 35. The whole process of CRM development including preparation, homogeneity and stability studies, and value assignment is presented. The assignment of the certified mass fraction was based upon an in-house study using high-performance liquid chromatography isotope dilution tandem mass spectrometry. Simultaneously, to support the in-house certification study, an interlaboratory comparison study was conducted with 13 expert laboratories using different analytical methods. The certified mass fraction and expanded uncertainty (k = 2) of ERM®-BC715 (362 ± 22) μg kg−1 ZEN are traceable to the SI. This reference material is intended for analytical quality control and contributes to the improvement of consumer protection and food safety. Graphical abstract

Preparation and characterisation of fried chicken as a laboratory reference material for the analysis of heterocyclic amines

2009 ◽  
Vol 877 (22) ◽  
pp. 1997-2002 ◽  
Author(s):  
M.R. Khan ◽  
A. Milà ◽  
R. Busquets ◽  
F.J. Santos ◽  
L. Puignou
Keyword(s):  
Reference Material ◽  
Heterocyclic Amines ◽  
Laboratory Reference

TC1725 - A Proposed Chalcopyrite Reference Material for LA-MC-ICP-MS Sulfur Isotope Determination

2021 ◽  
Author(s):  
Zhian Bao ◽  
Kaiyun Chen ◽  
Chunlei Zong ◽  
Honglin Yuan
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Sulfur Isotope ◽  
Accuracy And Precision ◽  
Icp Ms ◽  
Geochemical Tracer ◽  
Isotope Determination

Sulfur isotope is an important geochemical tracer in diverse fields of geosciences. Controlling the accuracy and precision of microanalysis of sulfur isotope requires well-characterized reference materials with matrices similar to...

New reference materials for trace-levels of actinide elements in plutonium

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Richard M. Essex ◽  
Lav Tandon ◽  
Amy Gaffney ◽  
Cole R. Hexel ◽  
Debbie A. Bostick ◽  
...  
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Quartz Glass ◽  
Uranium Isotope ◽  
Glass Bottle ◽  
Plutonium Isotopes ◽  
Mass Fractions ◽  
Trace Constituents ◽  
Actinide Elements

Abstract Two plutonium oxides were prepared as unique reference materials for measurement of actinide elements present as trace constituents. Each reference material unit is approximately 200 mg of PuO2 powder in a quartz glass bottle. Characterized attributes of the oxides included mass fractions of plutonium, americium, neptunium, and uranium. Isotope-amount ratios were also determined for plutonium and uranium, but neptunium and americium were observed to be monoisotopic 237Np and 241Am. Measurements for characterization and verification of the attributes show that plutonium and trace actinides are homogeneous with the exception of limited heterogeneity for uranium, primarily observed for the 238U isotope. Model purification ages calculated from measured americium and uranium attribute values are consistent with material histories and indicate that these impurities are predominantly due to the decay of plutonium isotopes.

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