Interlaboratory Proficiency Testing for Measurement of the Polycyclic Aromatic Hydrocarbon Metabolite 1-Hydroxypyrene in Fish Bile for Marine Environmental Monitoring
The determination of PAH metabolites in fish bile is performed to assess the PAH contamination in fish for environmental monitoring. A growing number of laboratories in Europe use this parameter for national monitoring. However, an international intercomparison between laboratories has not taken place in the last years. Therefore the determination of the PAH metabolite 1-hydroxypyrene was tested in a collaborative trial performed by 10 laboratories from eight countries. Five samples of naturally contaminated fish bile covering different concentration levels were distributed among the participants. The present study was open for different methods: GS/MS, HPLC-fluorescence (HPLC-F), fixed wavelength fluorescence (FWF), and synchronous fluorescence spectrometry (SFS), respectively. The results suggest that all four methods under investigation are suitable for screening purposes, but only three methods have produced comparable results which could be used for a common monitoring database: GC/MS, HPLC-F, and SFS (with conversion factor). Most z-scores were within the acceptance criteria of ±2. The comparability of GC/MS, HPLC-F, and SFS results should be further improved because SFS is a widely used method with a great potential for monitoring. The present study contributes to the quality assurance of results for European marine monitoring.
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Document Type: Research Article
Publication date: 01 May 2013
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- The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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