01 تیر 1403
ليما طيبي

لیما طیبی

مرتبه علمی: استادیار
نشانی:
تحصیلات: دکترای تخصصی / مهندسی منابع طبیعی- شیلات
تلفن:
دانشکده: دانشکده منابع طبیعی و محیط زیست

مشخصات پژوهش

عنوان
Ecotoxicological Assessment of Potentially Toxic Elements (as, Cd, Ni and V) Contamination in the Sediments of Southern Part of Caspian Sea, the Case of Khazar Abad, Mazandaran Province, Iran
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Caspian Sea · Ecotoxicological indices · Ecotoxic risk level · Potential toxic elements · Iran
سال
2022
مجله BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
پژوهشگران لیما طیبی

چکیده

In this study, the contamination of arsenic, cadmium, nickel and vanadium in the surface sediments of Khazar Abad, in the southern part of the Caspian Sea was analyzed in 2019 using ecotoxicological indices. The geoaccumulation index (Igeo) values showed that the sediment samples of the study area could be classifed as ‘unpolluted’ to ‘strongly polluted’, while, the values of toxic units (TUs) with an average value of 0.591 indicated that all samples could be classifed as ‘at low toxicity level’. Moreover, the ecotoxic risk level (TRI) in the studied sediments was classifed at the level of ‘no toxic risk’ for Cd and ‘considerable toxic risk’ for As and Ni. On the whole, the results showed that the levels of contamination were higher in the areas where industrial, domestic and agricultural wastewater was discharged (i.e. S4, S7, S10, S11 and S12). Finally, to avoid and/or reduce ecotoxicological dangers, periodic monitoring of PTEs in the coastal strip of the southern part of the Caspian Sea is recommended.