Issue 17, 2013

An emergent optimal precision in chemical measurement at low concentrations

Abstract

Collaborative trials are interlaboratory studies of the precision of data obtained from particular analytical methods. Increasingly many of these trials in the food sector are addressing analytes present at mass fractions between 10−11 and 10−7, that is, between 10 parts per trillion and 100 parts per billion. In 2000 the statistics from then-recently conducted collaborative trials of this type were examined. The trend of the inter-laboratory relative standard deviation took a value of 0.22. A similar trend can be seen in both older and more recent compilations of statistics. This paper demonstrates that the value emerges naturally in a fitness-for-purpose context and shows why a similar outcome would be likely in other application sectors.

Graphical abstract: An emergent optimal precision in chemical measurement at low concentrations

Article information

Article type
Technical Note
Submitted
04 Apr 2013
Accepted
09 Jul 2013
First published
09 Jul 2013

Anal. Methods, 2013,5, 4518-4519

An emergent optimal precision in chemical measurement at low concentrations

M. Thompson, Anal. Methods, 2013, 5, 4518 DOI: 10.1039/C3AY40557E

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