TY - JOUR AU - Jókainé Szatura, Zsuzsa AU - Abrankó, László AU - Fodor, Péter TI - SPME-GC-pyrolysis-AFS determination of methylmercury in marine fish products by alkaline sample preparation and aqueous phase phenylation derivatization JF - JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY J2 - J AGR FOOD CHEM VL - 53 PY - 2005 IS - 14 SP - 5499 EP - 5505 PG - 7 SN - 0021-8561 DO - 10.1021/jf0501140 UR - https://m2.mtmt.hu/api/publication/1390070 ID - 1390070 AB - Characterization of a cost-efficient analytical method based on alkaline sample digestion with KOH and NaOH, followed by aqueous phase phenylation derivatization with NaBPh4 and solid phase microextraction (SPME) for the determination of methylmercury in typical fish-containing food samples commercially available in Hungary, is reported. The sample preparation procedure along with the applied SPME-GC-pyrolysis-AFS system was validated by measuring certified reference materials (CRM) BCR-464, TORT-2, and a candidate CRM BCR 710. To carry out an estimation of average Hungarian methylmercury exposures via marine fish and/or fish-containing food consumption, 16 commercially available products and 3 pooled representative seafood samples of-according to a previous European survey-the three most consumed fish species in Hungary, herring, sardines, and hake, were analyzed. Methylmercury concentrations of the analyzed samples were in the range 0.016-0.137 mu g of MeHg g(-1) dry weight as Hg. LA - English DB - MTMT ER -