Metabolic Effects of Sulphur Derivative Pesticides in Fish Samples of Fresh Water in Bangladesh
In Bangladesh, there are lots of fishes in abundance. Fifteen fresh water fish samples namely Puntius sarana (Shawrputi), Channa punctatus (Taki), Wallogonia attu (Boal), Macrognathus aculiatus (Baim), Ailia coila (Kajoli), Mystus cavasisus (Gulsa), Ompok pabda (Pabda),Corica soborna (Kachki), Mystu svittatus (Tengra), Glossogobius giuris (Baila), Macrobrachium malcolmsli (Chingri), Amblypharyngodon microlepis (Mola), Anabas testudineus (Koi), Channa striatus (Shol), Heteropnueste fossilis (Shing). These fish samples were collected from two rivers and a cultured fish pond. The samples were extracted by QuEChERS method, cleaned up with conc. H2SO4 and cleaned extracts were analyzed by GC-ECD. Small size cultured Koi fish sample which did show detectable amount of sulphur containing pesticides and its metabolites was used for the recovery experiments. Percent recovery was found to be in the range of 80%-123%. Amount of total pesticides were found to be 54.34, 48.81, 62.09, 54.72, 78.81, 60.07, 47.0, 42.7, 26.31, 10.36, 25.32, 12.96, 20.10, 12.78, 17.65, and 4.71, 8.58, 11.3 and 19.01 ng/g in shawrputi, taki, boal, baim, Kajoli, gulsha, pabda, kachki, tengra, baila, chingri, mola, koi, shol, shing fish samples, respectively. However, the residual amounts of pesticides in all the fish samples were below maximum residue limit according to Codex Alimentarius Commission.
