Removal of dimethoate residues in Brassica campestris through different methods

Different methods,including water rinsing,detergents rinsing,ozone and photo treatment,were used to remove the dimethoate residues in Brassica campestris L.ssp.Chinensis(L.) Makino.The degradation efficiency of dimethoate reached 61.43% after the B.campestris was dipped in pH 11 water for 30 min.And a removing rate of 63.22% was obtained when the contaminated B.campestris was treated with the detergents for 30 min.The removal rate reached 46.28% and 61.55% when the contaminated B.campestris was treated with ozone-saturated water for 30 min and treated with 100 W high pressure mercury lamp for 60 minutes,respectively.