What if using certified reference materials (CRMs) was a requirement to publish in analytical/bioanalytical chemistry journals?

Wise, Stephen A.

doi:10.1007/s00216-022-04163-8

Cited by 7 publications

(4 citation statements)

References 51 publications

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“…Access to homogeneous test materials is necessary for all laboratory networks that wish to harmonise their methods or compare their results and evidently also for Proficiency Testing (PT) exercises. It was suggested by Wise that “common samples” could help laboratories to more rapidly achieve comparability between their measurement results [ 32 ]. We suggest that a reporting interface for analytical results should be coupled with such a pool of common samples where anonymised measurement results would be publicly available for all.…”

Section: Discussionmentioning

confidence: 99%

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Paving the way for new and challenging matrix reference materials—particle suspensions at the core of material processing providing RMs for method development and method validation

Emteborg,

Seghers,

García-Ruiz

et al. 2023

Anal Bioanal Chem

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Sufficient homogeneity of the certified parameter(s) over the whole fill series of a matrix reference material (RM) is a fundamental quality criterion. In practice, the heterogeneity of the target parameter is evaluated, whereby a relative value can be calculated of how much the target parameter is varying over the RM-batch. A high degree of homogeneity (low heterogeneity) is an inherent quality mark of a good RM. Here, we report how challenging matrix RMs were produced by using particle suspensions at the core of the material processing step. The examples of matrix RMs produced span from whole water reference materials for persistent organic pollutants, PM2.5-like atmospheric dust certified for specific ions to microplastic RMs. Most of these RMs were subsequently used in different phases of analytical method development or for method validation. Common to all these matrices is that they cannot be easily mixed, handled, or dosed to prepare larger sample batches. In all cases, a continuously stirred suspension of particles was used during material processing. In general, relative between-bottle heterogeneities from 1.6 to 6% were achieved for the target parameters in these matrix presentations. Concerning developments of new CRMs in emerging fields, the co-dependence between the availability of validated analytical methods with good repeatability and testing materials with a known and high homogeneity of the target parameter(s) becomes particularly challenging. This situation is an RM/Method causality dilemma. To overcome that hurdle, strategies are proposed for stepwise processes where RM producers and a network of analytical method developers could work hand in hand. In addition, development of a portfolio of inexpensive and well-homogenised common samples coupled with a reporting interface is suggested. This would benefit method developers and RM producers alike. As more and more data is compiled for a specific matrix, it paves the way for new and challenging RMs that can later be used by a wider community.

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Section: Discussionmentioning

confidence: 99%

“…Finally, the demand for matrix reference materials and/or test materials is much higher than can be met by RM producers. The route to widen access to common samples as suggested by Wise is certainly worth to explore further [ 32 ].…”

Section: Discussionmentioning

confidence: 99%

Paving the way for new and challenging matrix reference materials—particle suspensions at the core of material processing providing RMs for method development and method validation

Emteborg,

Seghers,

García-Ruiz

et al. 2023

Anal Bioanal Chem

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“…As suggested by A.S. Wise [21], current soil CRMs could be particularly useful to stablish a common comparison framework until NMs metrology is better developed and a proper soil CRM is developed for validation studies. From our point of view, MAE is well positioned to play a major role in this area since it could make feasible highly controlled and reproducible extraction treatments, particularly if commercial MW oven are specifically employed.…”

Section: Discussionmentioning

confidence: 99%

“…The latter three samples were specifically selected following the recommendations made by S. A. Wise [21] to improve field metrology since the characteristics (e.g., homogeneity, stability, etc.) and availability of certified reference materials (CRM) allow to use them in future studies as a common material for benchmarking.…”

Section: Soils Samplesmentioning

confidence: 99%

Determination of Metallic Nanoparticles in Soils by Means SpiCP-MS after a Microwave-Assisted Extraction Treatment

Gómez-Pertusa,

Garcia-Poyo,

Grindlay

et al. 2023

Preprint

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Towards harmonization of directly measured free 25-hydroxyvitamin D using an enzyme-linked immunosorbent assay

Sempos

Lindhout

Heureux³

et al. 2022

Anal Bioanal Chem

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The majority of circulating 25-hydroxyvitamin D (25(OH)D) is protein bound and perhaps less available than the free fraction of 25(OH)D; therefore, researchers have proposed that the measurement of free 25(OH)D in human serum may be a better indicator of vitamin D health status than total 25(OH)D. The availability of a new enzyme-linked immunosorbent assay (ELISA) for the determination of free 25(OH)D provides a method for direct measurement of the low levels of non-protein bound 25(OH)D. As an initial step towards harmonization of measurements of free 25(OH)D, the ELISA was used to measure free 25(OH)D in three existing Standard Reference Materials (SRMs): SRM 972a Vitamin D Metabolites in Frozen Human Serum, SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level), and SRM 1949 Frozen Prenatal Human Serum. Target values for free 25(OH)D in the nine SRM serum pools, obtained by combining the results from two laboratories, ranged from 3.76 ± 0.36 to 10.0 ± 0.58 pg/mL. Of particular significance is the assignment of free 25(OH)D target values to SRM 1949, which consists of four serum pools from non-pregnant female donors of reproductive age and pregnant women in each of the three trimesters and which also has values assigned for vitamin D binding protein, which increases during pregnancy. The availability of target values for free 25(OH)D in these SRMs will allow researchers to validate new analytical methods and to compare their results with other researchers as an initial step towards harmonization of measurements among different studies and laboratories.

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What if using certified reference materials (CRMs) was a requirement to publish in analytical/bioanalytical chemistry journals?

Cited by 7 publications

References 51 publications

Paving the way for new and challenging matrix reference materials—particle suspensions at the core of material processing providing RMs for method development and method validation

Paving the way for new and challenging matrix reference materials—particle suspensions at the core of material processing providing RMs for method development and method validation

Determination of Metallic Nanoparticles in Soils by Means SpiCP-MS after a Microwave-Assisted Extraction Treatment

Towards harmonization of directly measured free 25-hydroxyvitamin D using an enzyme-linked immunosorbent assay

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