Abstract

Abstract

To ensure public health and safety, many government agencies establish routine monitoring systems for pesticide residues in agricultural products such as vegetables and fruits. Many of these residues are amenable to LC-MS/MS analysis. The method developed here can be used to simultaneously analyze 51 pesticide residues that are routinely monitored by many health agencies.

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Figure 1. Representative chromatogram of 51 pesticides spiked into leek extracts at 0.01 mg/kg.

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Key-features

Key features of this method

• This method analyses 51 pesticides with a 7.5 minute runtime, ensuring high-throughput sample analysis without the need for method development
• Sample preparation adopts the internationally accepted QuEChERS (AOAC 2007.1) method
• This method has been tested on the SCIEX Triple Quad 3500 and 4500 systems, with three food products: chives, beans and strawberries
• Precision across continuous sample analysis of 120 samples for 15 hours ensures robust instrumental analysis

Figure 2. Quantitative performance for ten representative pesticides. Recoveries, precision and linearity coefficients for spiked leek extracts at 0.01, 0.02 and 0.05 mg/kg.

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Figure 3. Relative peak areas for ten representative pesticides over 15 hours of continuous analysis.

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