Uncertainty Contributions to Isotope Dilution Analysis MC & Q-ICP-MS for Mercury Speciation |
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Robert Clough1, E. Hywel Evans1, Simon Belt1 and Ben E. Fairman2 |
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1 |
Plymouth Environmental Research Centre, University of Plymouth, U.K. |
| 2 | LGC (Teddington), U.K. |
Presented at: 2003 European Winter Conference on Plasma Spectrochemistry, Garmisch-Partenkirchen, Germany, 12th-17th January 2003. |
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Download: Poster as an A4 pdf file. |
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The estimation of the uncertainty associated with an analytical measurement is increasingly being recognised as an essential part of the measurement process, allowing improved intercomparison of analytical results. Isotope dilution analysis mass spectrometry (ID-MS) is regarded as a definitive analytical technique as the accuracy and precision obtainable are unsurpassed by alternative analytical methods and allows the estimation of a measurement uncertainty which is directly related to S.I. units ad therefore meets the highest metrological standards. The presented uncertainty contributions to ID-MS and reverse ID-MS were calculated according to the principles described in the EURACHEWM Guide. Multicollector determinations were by a VG Axiom instrument with quadrupole determinations by a VG PQ3 instrument.
Download the complete poster as an A4 pdf file.