The qualitative and quantitative analysis of trace level pesticides in baby food matrices using UHPLC and triple quadruple MS is demonstrated. Sample preparation is performed using an Agilent SampliQ QuEChERS kit for extraction and SPE. The analysis is performed by LC/MS/MS on an Agilent 1290 Infinity LC system coupled to an Agilent triple quadrupole LC/MS using Dynamic MRM. Detection limits are between 500ng/kg and 10 ng/kg (ppt). Over forty different pesticides were screened in the baby food matrix. Recovery ranges from 70-110 percent at the 1 and 10 ppb spike levels and RSDs are less than 10 percent with the exception of two analytes. View entire application note.
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