ارزيابي ميزان سلنيوم و تعيين گونه هاي آن در خانواده شوريده ماهيان و بررسي ميزان سميت آن ها

Speciation Analysis of Selenium Compounds and Assessment of Toxicity in Fish Sciaenidae Family

Introduction: In this study, the contents of selenium were determined in liver, kidney and muscle tissues of eighteen from the Sciaenidae family (Otolithes ruber), which were caught, from the Persian Gulf in Abadan, Bushehr and Mahshahr cities. T Materials and Methods: The determination was performed by Hydride Generation Atomic £ Absorption Spectrometry (HGAAS). The limit of detection for selenium was 0.7^g/kg and the repeatability of measurements, as the means of RSD was 0.94% and the RSD of the I* whole procedure were 2.86%. Separation and identification of selenium compounds were accomplished by headspace solid phase microextraction gas chromatography mass 1 spectrometry (HS-SPME-GC-MS). 9 Results: Selenium compounds speciation in fish tissues by SPME-GCMS demonstrated that c- organo-selenium in the samples were dimethylselenide, diethylselenide and ^ dimethyldiselenide. Conclusion: The content of selenium Otolithes ruber samples (35p,g/day) was in the safe l dose (50-200 ^g/day); consequently, selenium compounds in fish Sciaenidae family were not E toxic.