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IMEP-23: The eight EU-WFD priority PAHs in water in the presence of humic acid

  • Recently, the International Measurement Evaluation Programme (IMEP) organized an interlaboratory comparison on total concentrations of eight polycyclic aromatic hydrocarbons (PAHs) in natural inland waters. It was carried out in support to the European Union Water Framework Directive (EU-WFD) that lists these eight as priority substances. As sample matrix, we used groundwater spiked with humic acid as a model for the colloidal substances that are present in natural inland waters. Humic substances can adsorb PAHs, but we found that some laboratories did not apply analytical procedures that sufficiently accounted for this. One of these laboratories was involved in establishing the reference values. We show how this impacted on the reliability of their measurements. Many participants accepted our invitation to report their measurement uncertainties. We assessed their results against our reference values and uncertainties, and provided z and zeta scores. Although the overall measurementRecently, the International Measurement Evaluation Programme (IMEP) organized an interlaboratory comparison on total concentrations of eight polycyclic aromatic hydrocarbons (PAHs) in natural inland waters. It was carried out in support to the European Union Water Framework Directive (EU-WFD) that lists these eight as priority substances. As sample matrix, we used groundwater spiked with humic acid as a model for the colloidal substances that are present in natural inland waters. Humic substances can adsorb PAHs, but we found that some laboratories did not apply analytical procedures that sufficiently accounted for this. One of these laboratories was involved in establishing the reference values. We show how this impacted on the reliability of their measurements. Many participants accepted our invitation to report their measurement uncertainties. We assessed their results against our reference values and uncertainties, and provided z and zeta scores. Although the overall measurement capability appears satisfactory, there is room for improvement of analytical procedures as regards the use of measurement standards.zeige mehrzeige weniger

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Metadaten
Autor*innen:Johannes van de Kreeke, B. de la Calle, A. Held, O. Bercaru, M. Ricci, P. Shegunova, P. Taylor
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Trends in analytical chemistry
Jahr der Erstveröffentlichung:2010
Verlag:Elsevier
Verlagsort:Amsterdam
Jahrgang/Band:29
Ausgabe/Heft:8
Erste Seite:928
Letzte Seite:937
Freie Schlagwörter:Dissolved organic matter (DOM); Humic substance; Interlaboratory comparison (ILC); Internal standard; International measurement evaluation programme (IMEP); Polycyclic aromatic hydrocarbon (PAH); Reference value; Uncertainty; Water; Water framework directive (WFD)
DOI:10.1016/j.trac.2010.04.009
ISSN:0165-9936
ISSN:0703-7147
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:30.08.2010
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