Estimation of measurement uncertainty of pesticides, polychlorinated biphenyls and polyaromatic hydrocarbons in sediments by using gas chromatography-mass spectrometry.
| Autor: | Pindado Jiménez O; Chemistry Division, CIEMAT, Madrid, Spain. oscar.pindado@ciemat.es, Pérez Pastor RM |
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| Jazyk: | angličtina |
| Zdroj: | Analytica chimica acta [Anal Chim Acta] 2012 Apr 29; Vol. 724, pp. 20-9. Date of Electronic Publication: 2012 Mar 08. |
| DOI: | 10.1016/j.aca.2012.02.050 |
| Abstrakt: | The evaluation of the uncertainty associated to analytical methods is essential in order to demonstrate quality of a result. However, there is often lack of information about uncertainty of methods to estimate persistent organic pollutants concentration in complex matrix. Current work has thoroughly evaluated uncertainty associated to quantification of several organochloride pesticides, PCBs and PAHs in sediments. A discussion of the main contributions to the overall uncertainty is reported, allowing authors to establish the accuracy of results and plan future improvements. Combined uncertainties ranged between 5-9% (pesticides), 4-7% (PCBs) and 5-10% (PAHs), being uncertainty derived of calibration the main contribution. Also, the analytical procedure was validated analysing a standard reference material (IAEA-408). (Copyright © 2012 Elsevier B.V. All rights reserved.) |
| Databáze: | MEDLINE |
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