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Issue 28, 2017
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Proficiency testing of sampling

Abstract

Proficiency testing of analytical laboratories is now ubiquitous—laboratories need to participate regularly to receive accreditation. The outcome helps participants to detect unexpected sources of uncertainty. But sampling, as well as analysis per se, introduces its own uncertainty in most types of analysis. Sampling uncertainty arises partly from heterogeneity in the ‘target’ (the particular mass of material for which the sample is a surrogate), but also from variation in the manner in which the sample is extracted. Different samplers will do the job somewhat differently, even when following a single protocol. The potential value of proficiency tests for sampling is therefore obvious. And in recent years, feasibility studies and schemes have appeared in several application sectors. Different sectors have very different constraints on how sampling and proficiency testing can be carried out. Nevertheless, the need for general guidelines is obvious.

Graphical abstract: Proficiency testing of sampling

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Publication details

The article was received on 23 Jun 2017 and first published on 06 Jul 2017


Article type: AMC Technical Brief
DOI: 10.1039/C7AY90092A
Citation: Anal. Methods, 2017,9, 4110-4111
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    Proficiency testing of sampling

    Analytical Methods Committee AMCTB No. 78, Anal. Methods, 2017, 9, 4110
    DOI: 10.1039/C7AY90092A

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