Micro-homogeneity evaluation of a bovine kidney candidate reference material

The minimum sample intake for which a reference material remains homogeneous is one of the parameters that must be estimated in the homogeneity assessment study of reference materials. In this work, Instrumental Neutron Activation Analysis was used to evaluate this quantity in a bovine kidney candidate reference material. The mass fractions of 9 inorganic constituents were determined in subsamples between 1 and 2 mg in order to estimate the relative homogeneity factor (HE) and the minimum sample mass to achieve 5% and 10% precision on a 95% confidence level. Results obtained for HE in all the analyzed elements were satisfactory. The estimated minimum sample intake was between 2 mg and 40 mg, depending on the element.

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Simultaneous Direct Determinations of Na, Mg, K, Ca, P, and S in Biodiesel Fuel by ICP-QMS/QMS after Xylene Dilution: Development and Application of a High-throughput Method for a Homogeneity Assessment of a Candidate Reference Material

Analytical Sciences ◽

10.2116/analsci.33.209 ◽

2017 ◽

Vol 33 (2) ◽

pp. 209-215 ◽

Cited By ~ 2

Author(s):

Yanbei ZHU ◽

Yuko KITAMAKI ◽

Masahiko NUMATA

Keyword(s):

Reference Material ◽

High Throughput ◽

Biodiesel Fuel ◽

Candidate Reference Material ◽

Homogeneity Assessment ◽

High Throughput Method

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Use of INAA in the homogeneity evaluation of a bovine kidney candidate reference material

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/s10967-016-4998-8 ◽

2016 ◽

Vol 311 (2) ◽

pp. 1291-1298 ◽

Cited By ~ 4

Author(s):

Liliana Castro ◽

Edson G. Moreira ◽

Marina B. A. Vasconcellos

Keyword(s):

Reference Material ◽

Bovine Kidney ◽

Candidate Reference Material

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Certified Reference Materials for the Characterisation of Multifunctional Materials

Materials Science Forum ◽

10.4028/www.scientific.net/msf.492-493.635 ◽

2005 ◽

Vol 492-493 ◽

pp. 635-640 ◽

Cited By ~ 2

Author(s):

Gert Roebben ◽

Uwe Wätjen ◽

Andrée Lamberty

Keyword(s):

Quality Assurance ◽

Reference Material ◽

Reference Materials ◽

Certified Reference Materials ◽

Multifunctional Materials ◽

Multifunctional Material ◽

Minimum Sample Intake ◽

Local Properties ◽

Sample Intake ◽

Material Producer

Multifunctional materials are created by intimately integrating different materials. The assessment of the local properties and composition of the different components of such a multifunctional material necessarily relies on techniques with sufficient spatial resolution. The increased use of these microanalysis or microprobe techniques has created a demand for appropriate quality assurance tools, such as reference materials. In this paper a number of issues related to the certification of reference materials for multifunctional materials are discussed. Examples of reference materials are shown to illustrate the particular challenges the reference material producer is faced with such as micro-homogeneity, minimum sample intake and stability.

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Total arsenic in tuna fish candidate reference material preparations: Homogeneity and stability testing

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/160/1/012022 ◽

2018 ◽

Vol 160 ◽

pp. 012022 ◽

Cited By ~ 1

Author(s):

T A Koesmawati ◽

Buchari ◽

J Ng

Keyword(s):

Reference Material ◽

Total Arsenic ◽

Stability Testing ◽

Tuna Fish ◽

Candidate Reference Material ◽

Material Preparations

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

Radiochimica Acta ◽

10.1515/ract-2021-1095 ◽

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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