Preparation of Four Chromium Ore Reference Materials

Cheng, Zhizhong; Huang, Hongku; Liu, Mei; Gu, Tingyue; Yan, Weidong; Yan, Mi

doi:10.1111/j.1751-908x.2012.00162.x

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Some examples of recent highlights in the different fields of geoanalytical work are as follows: Cheng et al . () produced four new chromium ore RMs, which are useful for investigations in economical geology, and presented certified values. To get additionally silicate RMs – besides the well‐known NIST SRM 610–617 reference glasses (Jochum et al .…”

Section: Scientific Journals From Which Relevant Articles Were Reviewedmentioning

confidence: 99%

Geostandards and Geoanalytical Research Bibliographic Review 2012

Jochum

Nohl

Rothbarth

et al. 2013

Geostandard Geoanalytic Res

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Section: Scientific Journals From Which Relevant Articles Were Reviewedmentioning

confidence: 99%

Geostandards and Geoanalytical Research Bibliographic Review 2012

Jochum

Nohl

Rothbarth

et al. 2013

Geostandard Geoanalytic Res

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“…For this reason, the IGGE, China, recently produced the four chromium ore RMs: GCr‐1, GCr‐2, GCr‐3 and GCr‐4 (Cheng et al . ). These samples were collected from chromite deposits in Tibet and Inner Mongolia.…”

Section: Reference Materials For Geoanalytical and Environmental Resementioning

confidence: 97%

“…They were found to be sufficiently homogeneous at the bulk scale to serve as certified RMs, such that Cheng et al . () could present certified values for eighteen components.…”

Section: Reference Materials For Geoanalytical and Environmental Resementioning

confidence: 99%

GGR Biennial Critical Review: Analytical Developments Since 2010

Wiedenbeck

Bugoi

Duke

et al. 2012

Geostandard Geoanalytic Res

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Advances in the chemical and isotopic characterisation of geological and environmental materials can often be ascribed to technological improvements in analytical hardware. Equally, the creation of novel methods of data acquisition and interpretation, including access to better reference materials, can also be crucial components enabling important breakthroughs. This biennial review highlights key advances in either instrumentation or data acquisition and treatment, which have appeared since January 2010. This review is based on the assessments by scientists prominent in each of the given analytical fields; it is not intended as an exhaustive summary, but rather provides insight from experts of the most significant advances and trends in their given field of expertise. In contrast to earlier reviews, this presentation has been formulated into a unified work, providing a single source covering a broad spectrum of geoanalytical techniques. Additionally, some themes that were not previously emphasised, in particular thermal ionisation mass spectrometry, accelerator‐based methods and vibrational spectroscopy, are also presented in detail.

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“…Accordingly, XRF could be a satisfactory approach for testing the homogeneity of CRMs, in addition to its contribution in the certification of macro- and micro-elements. Satisfactory results were reported for the use of XRF for homogeneity tests of CRMs of different matrices including sediment [11], chromium ores [12], nickel ores [13], maize grain [14], ash of municipal solid waste [15] and crude oil [16]. Based on the above discussion, the aim of this study was to use WD-XRF for testing initial between-bottle homogeneity of seven CRMs benefitting the above-mentioned advantages of the technique.…”

Section: Introductionmentioning

confidence: 99%

Between-bottle homogeneity test of new certified reference materials employing wavelength dispersive X-ray fluorescence spectrometry

Idris

2019

BMC Chemistry

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Background A pilot study has being carried out at our laboratories, with international collaborators, to develop seven certified reference materials (CRMs), which have matrices of mainly soil and biological tissues. The CRMs will be certified for macro-, micro- and trace elements for environmental, toxicological, agronomic and nutritional purposes. Homogeneity of element concentrations is a critical step in the production process of CRMs. This work employs wavelength dispersive X-ray fluorescence spectrometry (WD-XRF) to test between-bottle homogeneity of the CRMs. Results The relative standard deviation (RSD), relative average deviation, Skewness and Kurtosis of element contents in seven bottles out of 80 bottles of each CRM were considered to assess homogeneity in terms of variability and distribution. More than 50% of the number of quantified elements recorded RSD between 2 and 5%. Hence, based on an in-house classification, the intended CRMs recorded excellent to good between-bottle homogeneity. Nevertheless, the contents of some elements (Ni, Rb, Zn and Br) experienced high RSD values (> 10%). The Skewness and Kurtosis values of most elements are around one indicating symmetric distribution and thus have an absence of tailing relative to the normal distribution. Conclusions WD-XRF provides fit for purpose data for assessment of initial between-bottle homogeneity in terms of rapidity, ease of use, multi-element quantification and sample non-destruction. Electronic supplementary material The online version of this article (10.1186/s13065-019-0528-4) contains supplementary material, which is available to authorized users.

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Preparation of Four Chromium Ore Reference Materials

Cited by 8 publications

References 7 publications

Geostandards and Geoanalytical Research Bibliographic Review 2012

Geostandards and Geoanalytical Research Bibliographic Review 2012

GGR Biennial Critical Review: Analytical Developments Since 2010

Between-bottle homogeneity test of new certified reference materials employing wavelength dispersive X-ray fluorescence spectrometry

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