Quantitation of Pesticides in Black Tea Extract

This application note is a technical report detailing the quantitation of 246 pesticides in black tea extract using the Agilent 7010D Triple Quadrupole Mass Spectrometer (GC/TQ). The report outlines the methodology employed, including sample preparation through QuEChERS extraction and subsequent cleanup with Agilent Captiva EMR–GPD cartridges. The application note emphasizes the performance of the GC/TQ system, which achieved limits of quantitation (LOQs) as low as 0.01 ppb for over a third of the evaluated compounds and demonstrated a wide calibration range spanning up to five orders of magnitude. The method's robustness is highlighted by its performance over 800 consecutive injections, maintaining high precision and low relative standard deviations (RSDs). Additionally, the report discusses the innovative features of the GC/TQ system, including the second-generation High Efficiency Source 2.0 (HES 2.0) and advanced data acquisition capabilities that enhance user experience and analytical performance. The findings support compliance with regulatory standards for pesticide residues in food products.