Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Philip J. Potts"'
Autor:
Philip J. Potts, Mike Sargent
Publikováno v:
Journal of Analytical Atomic Spectrometry. 37:1928-1947
Hand-held XRF is described from a tutorial viewpoint suitable for users without extensive training in XRF methodology in order to raise awareness of issues in using the technique and improve the interpretation of hand-held XRF measurement results.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ce66d45e96c8a67e94dd82abc10258e
https://doi.org/10.1039/d2ja00171c
https://doi.org/10.1039/d2ja00171c
Publikováno v:
Geostandards and Geoanalytical Research. 43:397-408
Re-issuing the same test material, its true identity unknown to participants, in two rounds of the GeoPT proficiency testing programme 18 years apart has demonstrated remarkable similarity, and therefore stability, of consensus values independently e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65dffd1e3df54d6ac0be9d11ecc89ad9
https://doi.org/10.1111/ggr.12263
https://doi.org/10.1111/ggr.12263
Publikováno v:
Geostandards and Geoanalytical Research. 43:409-418
ISO Guide 35:2017 provides, for the first time, an alternative way of characterising certified reference materials using proficiency testing. In this paper, the properties of assigned values derived from the well-established GeoPT proficiency testing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bccb3d844933ba4cb38430fd272ea270
https://doi.org/10.1111/ggr.12261
https://doi.org/10.1111/ggr.12261
Autor:
Philip J. Potts, Peter C. Webb
Publikováno v:
Geostandards and Geoanalytical Research. 43:217-229
The original certification protocol, published by the International Association of Geoanalysts in 2003, specified that the competence of laboratories selected as competent to contribute certification measurements should be evaluated from their perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::326172e6a18ebec5e5cf12630c0803e2
https://doi.org/10.1111/ggr.12252
https://doi.org/10.1111/ggr.12252
The preparation and certification of three new sediment‐based reference materials SdAR‐L2 (Blended sediment), SdAR‐M2 (Metal‐rich sediment) and SdAR‐H1 (Metalliferous sediment) described in this paper involved collaboration between the U.S.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0302b9326fb26b012924f31eeaeb19d9
http://oro.open.ac.uk/67394/1/Wilson_et_al-2019-Geostandards_and_Geoanalytical_Research.pdf
http://oro.open.ac.uk/67394/1/Wilson_et_al-2019-Geostandards_and_Geoanalytical_Research.pdf
Publikováno v:
Analytical Methods. 10:1547-1551
In 2017 a silicate rock test material was re-issued in the geoanalytical proficiency test GeoPT after an interval of 18 years. The second distribution was participant-blind. Consensus values (for each analyte for which measurements were submitted by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee1826e489bd44671595e1323709fd65
https://doi.org/10.1039/c8ay00093j
https://doi.org/10.1039/c8ay00093j
Autor:
Philip J. Potts
Publikováno v:
Analytical Methods. 10:3303-3309
This guide is designed for those involved in the purchase of analytical instrumentation, including analysts and laboratory staff, purchasing officers and senior managers. It provides recommendations on the stages that are required for the successful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed9a807bb672a819640c5f9120762df2
https://doi.org/10.1039/c8ay90075b
https://doi.org/10.1039/c8ay90075b
Autor:
Andrew T. Ellis, Peter Wobrauschek, Christina Streli, Philip J. Potts, C. Vanhoof, Margaret West
Publikováno v:
Journal of Analytical Atomic Spectrometry. 31:1706-1755
This review describes advances in the XRF group of techniques published approximately between April 2015 and March 2016. Fundamental contributions in the instrumentation sections include the development of synchrotron radiation sources, semiconductor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da90f216930505554b5e80cbe481ba77
https://doi.org/10.1039/c6ja90034h
https://doi.org/10.1039/c6ja90034h
Publikováno v:
Geostandards and Geoanalytical Research. 39:407-417
Assigned values derived from the GeoPT proficiency testing programme were compared with certified values for six certified reference materials that have been used as test materials in the GeoPT programme. Statistical analysis showed that there were f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a19e7ffda616f49766cc88de60806718
https://doi.org/10.1111/j.1751-908x.2015.00338.x
https://doi.org/10.1111/j.1751-908x.2015.00338.x
Publikováno v:
Geostandards and Geoanalytical Research. 39:315-327
The analytical results for the modified river sediment, SdAR-1 circulated in Round 31 of the GeoPT proficiency testing programme, revealed unexpected discrepancies for Zr, Y and most higher atomic number rare earth elements, in determinations made by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aef2d0d244659face6d93fee9e1d4ae
https://doi.org/10.1111/j.1751-908x.2014.00305.x
https://doi.org/10.1111/j.1751-908x.2014.00305.x