دراسة تراكم المعادن الثقيلة في الأغذية السمكية في الأسواق السورية

الملخص EN

Sea-foods are very important in the human diet worldwide, as it is a major source of protein and are characterized by very low levels of harmful saturated fats, and high contents of omega 3 which is known for its important impact on the immunity of the human body and help the body organs to carry out their tasks more effectively.

Tuna and Sardine are the most commonly consumed fish in Syria, since they are available and relatively cheap.

However, heavy metals can accumulate in these food, so this study was conducted to identify the levels of heavy metals, lead and mercury, in canned fish food (Tuna and Sardine) that are sold in Syrian markets.

Heavy metal concentrations in canned fish were identified by graphite furnace atomic absorption spectroscopy Zee nit 700p.

The concentrations were expressed in ppm as follows: Lead values range between 0.1-5.1ppm in Tuna samples and 0.77-23.5 ppm in Sardine samples.

Mercury values range between 0.001-0.02 ppm in Tuna samples and 0.01-0.04 ppm in Sardine samples.

By comparing the results of lead in Tuna samples with the maximum threshold permitted by WHO (World Health Organization) and FAO (Food and Agriculture Organization) which is1.5 ppm, most of these samples were lower than this level, except two samples, while concentrations of lead in Sardine samples were higher than the maximum level of FAO/WHO which is also1.5 ppm, except two samples.

The study also showed that all concentrations of mercury in Tuna and Sardine samples were lower than the maximum permitted level by FAO/WHO which is 0.5 ppm.