Vol. 11, Issue 3 (2022)

Author(s):
Pooja, Sushil, Preeti Dhanker and Reena Chauhan

Abstract:
The global use of pesticides in agricultural and non-agricultural sectors has out-turned in the presence of mammoth residues in a wide variety of environmental commodities including plants, soil, and water resources. Contamination of water takes place not only with the ongoing use of agrochemicals but in addition to this due to the leaching of persistent chemical ingredients from the soil. A laboratory experiment was conducted during the year 2018-2019, at Chaudhary Charan Singh Haryana agricultural university, Hisar, Haryana in order to estimate the decline in levels of ready pre-mix formulation of thiamethoxam + lambda - cyhalothrin in canal water. Ready pre-mix formulation of thiamethoxam + lambda - cyhalothrin (Alika) was mixed in the canal water samples collected in amber bottles at the rate of 0.5 μg mL^-1 (Single Dose, SD) and 1 μg mL^-1 (Double Dose, DD). Water samples were collected on 0 (1 h), 3, 5, 10, 20, 30, 45, 60, and 90 days after spray application. The technique of liquid-liquid partitioning with DCM (dichloromethane) was used for processing the collected water samples. Finally, the residues were estimated using GC MS/MS.