تقدير تركيز الكادميوم في أنسجة و أعضاء ثلاثة أنواع من الأسماك المجمعة من ميناء الصيد بصبراتة ليبيا

Abstract EN

Seawater pollution with heavy metals has become a serious problem in this century due to the presence of these minerals in agricultural effluents, wastewater and industrial waste, which destroy aquatic ecosystems as they have been particularly detected in fish organs associated with consumption of these fish, threatening human livelihoods .the study included estimating the concentration of cadmium in the liver, gills and meat of three types of bottom and pelagic fish of economic value and the most consumed, namely sardines, scomber scombrus and sarpa salpa collected from the fishing port of sabratha, with the aim of knowing the concentration of cadmium in the bodies of these fish and their transport within the food chain and then reaching the human body and the extent of their impact on human health.

the fish under study showed lengths ranging between (15-25.2 cm) and weights ranging between (24.2-261g).

the results also showed that the lowest concentration of cadmium was found in the meat while the liver was the organ that showed the highest concentration.

through the results obtained, a variation in the results was observed so the concentration of cadmium in the liver, gills, and meat tissues of sardines was as follows (14.032+1.786) / 3.946+0.268/ 0.66±0.069 µg/g) respectively.

in liver, gills, and chelba meat, the concentration was 3.555±0.163)/2.616+0.248 / 0.6410.038 µg/g, respectively.

the concentration of kwali fish was (10.687+0.899/3.546+0.144/0.78±0.043 µg/g) in the liver, gills and flesh, respectively.

the level of cadmium varied significantly between fish species and organs.

the concentration of cadmium in the tissues and organs of fish followed the following descending order : liver> gills> meat, making fish a good vital guide for studying heavy metal pollution.

it was noted that the cadmium concentration in all meat samples was within the permissible limits according to the international cadmium legislation.