Heavy Metals, Polycyclic Aromatic Hydrocarbons and Organochlorine Compounds in Queen Scallop (Aequipecten Opercularis) for Human Consumption.
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AuthorsBesada, V. (Victoria); Viñas, L. (Lucía); González-Quijano-Mosteiro, A. (Amelia); Franco-Hernández, M.Á. (María de los Ángeles); Campos-Loriz, M.J. (María Jesús); Schultze, F. (Fernando); González, J.J. (Juan José)
Results of chemical concentrations of heavy metals, polyciclyc aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and dichloro-diphenyl-trichloretane (DDT) and its metabolites in queen scallop (Aequipecten opercularis) are presented. Sampling took place, after the spawning period, in the main shellfish grounds of the Rias of Vigo and Arosa (NW Spain). Each sample was prepared from 20 individuals representing the available size range existing in the selected area. The soft tissues (total edible portion) were separated from the shells, triturated with an Ultraturrax homogeniser and freeze-dried. The analysis of trace metals includes a nitric acid digestion in a microwave. The quantification was carried out by atomic absorption spectrometry with Zeeman effect graphite furnace. Total mercury was determined by flow injection cold vapour atomic absorption spectrometry. The method used for the determination of 13 Polycyclic Aromatic Hydrocarbons (PAHs) is based in a Soxhlet extraction ...