Environmental Monitoring and Assessment

, Volume 116, Issue 1–3, pp 307–313 | Cite as

Dissipation of Endosulfan and Dichlorvos Residues In/On Cauliflower Curds



Dissipation behaviour of endosulfan and dichlorvos in/on cauliflower, variety Snowball-16, was studied during rabi season (Sep.–March) 2003–2004. Endosulfan and dichlorvos were sprayed @ 350 and 110g a.i. with 115 g a.i., respectively, 80 days after transplanting. Samples were taken at the interval of 0 (1h after spray), 3, 5, 7, and 10 days after spray (DAS) in triplicate and residues were estimated on GC-ECD system equipped with capillary column. The initial deposits of 3.452 and 0.295μgg−1 of endosulfan and dichlorvos dissipated to 0.084 (97.56%) and 0.009 (96.95%), respectively after 10 DAS. Residues of endosulfan reached below maximum residue limit of 2μgg−1 one day after spray and of dichlorvos were below MRL value of 0.5μgg−1 even on 0 day. Dissipation pattern followed first order kinetics for both the insecticides with half life periods of 1.81 and 2.08 days for endosulfan and dichlorvos, respectively.


cauliflower dichlorvos dissipation endosulfan gas liquid chromatography (GLC) maximum residue limit (MRL) 


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© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of EntomologyCCS Haryana Agricultural UniversityHisarIndia

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