As pollinator health continues to be a concern for the Agricultural industry, there is an increased demand for analytical methods to determine pesticide residues in bee-related matrices. The nature of these matrices presents new practical challenges. The limited availability of sample material, comminution of the small sample sizes, and problematic co-extractives are issues that must be overcome when developing reliable methods.<br/>Residue methods were developed to analyze flowers, leaves, pollen, and nectar to support semi-field pollinator studies. To meet the requirements of the study, a method capable of handling whole flowers and leaves with a variable sample size was developed along with the evaluation of sample comminution strategies to prepare test samples prior to analysis. While developing an analytical method for pollen, significant matrix-effects were observed. To better understand the nature of these effects, the matrix-effects were tested on a range of commercially available pollen using QuEChERS-based methods. The details of these experiments, including some case studies, will be discussed in this presentation.

Residue analysis of bee-related matrices: Challenges and techniques

254th National Meeting (2017)

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