Study of Organ Chlorine Pesticides Concentration in Sediments of Southern of the Caspian Sea

Organ chlorine pesticides are very important due to carcinogenic and delayed toxic function and their effect on nervous system of fish and human. In this project concentrations of organ chlorine pesticides including Lindane, Heptachlor, Dieldrin, Aldrin and DDT was measured in sediments of southern coasts of Caspian Sea from Astara, Hashtpar, Bandare Anzali, Kiashahr, Ramsar, Chalous, Noor, Feraidoun Kenar, Khazarabade Sari and Bandare Turkman stations. After sampling from above mentioned stations, they have been extracted, separated, condensed and then have been analyzed by GC system an equipped with electron capture detector. In sampled sediments, Heptachlor with an average of 0.493 mg/kg on wet weight concentration and Aldrin with an average of <0.001 mg/kg on wet weight concentration have the highest and lowest concentrations, respectively. The order of these pesticides according to average of concentrations, are as follow: Heptachlor > DDT > Dieldrin > Lindane > Aldrin.