Occurrence of organochlorine residues in surface water and mussel Corbicula sumatrana from Lake Singkarak, West Sumatera

Abstract Organochlorine is a synthetic pesticide that has been banned in many countries because of its high persistence the environment and can accumulate animals. The goal our study was to determine level organochlorine residues surface water mussel Corbicula sumatrana Lake Singkarak. Water samples were collected from 10 sampling sites Singkarak, Batu Taba, Sumpur, Guguk Malalo, Ombilin, Tikalak, Sumani, Saniang Baka, Muaro Pingai, Paninggahan, Tanjung Mutuih, respectively June 2021. extracted analyzed with gas chromatography. result revealed occurrence Lindan (7 μg/L) also Aldrin (3 Ombilin. residue compounds detected mussels five (Tikalak, Mutuih). Mussels Tikalak contain namely Dieldrin, Dichlorodiphenyltrichloroethane (DDT), Endosulfan levels 2 μg/kg, 6 3 respectively. Dieldrin at Sumani (2 μg/kg), Pingai (4 Paninggahan (10 μg/kg). DDT Mutuih μg/kg. Other such as Heptachlor Endrin not both all studied. results indicate still be found environment, being higher than water.