A study on removal effect of Endosulfan in soil and aquatic system

In this study, a series of experiments were conducted using a standard solution containing and -endosulfan to follow the removal effect of residual pesticides on soil and aqueous solution. An analytical method for residual pesticides was established by a gas chromatography equipped Ultra II[] capillary column and a -electron capture detector(-ECD). Recovery rates of residual pesticides for soil samples were 96-100%. The amount of and -endosulfan that was spread in the soil was checked for various period of time. It indicated that the amount was reduced to 73 and 61%, respectively. When the water spread amount increased from 10 to 100 mL, -endosulfan was eliminated from 45 to 85% and while -endosulfan from 44 to 88%. Removal rates of -endosulfan and -endosulfan were 99% and 98% respectively within 30 minutes. It was assumed that the organic salts and strong alkali elements contained in the pesticide degradator hydrolyzed the residual pesticide.