Verification of An Efficient Method for the Determination of Some Pesticide Residues in Nectarine and Peach

Method verification is an internal quality control procedure verifying the suitability of method for specific purposes. All methods should be verified prior to analyses real samples. LOQ, range linearity, precision, accuracy and recovery criteria have taken into consideration while performing verification. This study was conducted verify QuEChERS analysis boscalid, chlorpyrifos tebuconazole in nectarine peach. Samples spiked at 3 levels different pesticides. LC-MS/MS used chromatographic separation. Matrix calibration (MC) compensate matrix effect. revealed that all pesticide LOQs were less than MRL. Recovered from matrices recorded as 123.73% (RSD= 8.89%; n=52), 108.37% 14.95%; n=52) 110.34% 15.22%; respectively. Overall QuEChERS-AOAC 2007.01 113.96 %, with RSD value 14.52 % (n=156; SD=16.55). ranges noted 66.42-139.68%. These values fit SANTE (60–140%). MC curves pesticides linear (R2 ?0.999). Some other criteria, such accuracy, precision within specified limits. According results this study, suitable chlorpyrifos, boscalid case peachs.