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ISRN Analytical Chemistry
Volume 2012 (2012), Article ID 267596, 5 pages
http://dx.doi.org/10.5402/2012/267596
Research Article

Dissipation and Residues of Mandipropamid in Grape Using QuEChERS Methodology and HPLC-DAD

Pesticide Residues and Environmental Pollution Department, Central Agricultural Pesticide Laboratory, Agriculture Research Center, Dokki, Giza 12618, Egypt

Received 14 January 2012; Accepted 2 February 2012

Academic Editors: P. Caboni and I. Lavilla

Copyright © 2012 Farag M. Malhat and Hend A. Mahmoud. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The HPLC method for determination of mandipropamid residues and its dissipation in grape was investigated. The mean recoveries of the analytical method were 98–102%. The samples were collected within 2 weeks after pesticide application, and the pesticide residues were extracted by an optimized QuEChERS method. Mandipropamid dissipated rapidly with half-life 2.20 days in grape. According to maximum residue limit (MRL) the preharvest interval (PHI) of mandipropamid on grape was 4 days, after the last treatment.