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Determination of Mercury in One Hundred and Sixteen Geological and Environmental Reference Materials Using a Direct Mercury Analyser
Author(s) -
Marie Barbara,
Marin Luc,
Martin PierreYves,
Gulon Tioga,
Carignan Jean,
Cloquet Christophe
Publication year - 2015
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2013.00254.x
Subject(s) - mercury (programming language) , analyser , environmental chemistry , environmental science , mineralogy , chemistry , chromatography , computer science , programming language
The mercury content of 116 reference materials ( RM s) from ten international organisations was determined in this study, which focused on variability within and between batches of RM s. Direct mercury analysis ( DMA ) was applied to RM s having H g contents between 1 and 6300 ng g −1 and provided good precision and accuracy. Accuracy was demonstrated by the agreement of our results with certified values, while replicates were made to establish the precision. Low within‐batch variability was noted, with precision from 0.1 to 23% ( n = 3–5) apparently depending on Hg content and homogeneity, whereas systematic offsets were detected among several batches. Thanks to the analysis of different batches; the homogeneity or heterogeneity of several RM s was shown, and thus, suitable RM s for quality control for Hg determinations could be recommended.