Abstract

A new analytical method for determining environmental pesticide residues in pollen was introduced and validated. The extraction was conducted using acetonitrile, the clean-up using Supelclean Ultra 2400 solid phase extraction cartridges, which contain Grapsphere, anion exchanger, C18 and zirconia-based sorbent, and the determination was conducted using gas chromatography coupled with mass spectrometry. The method was applied in practice. A total of 49 active substances (pesticides) were sought in 30 bee pollen samples gathered from Slovenian beekeepers from all 12 statistical regions of Slovenia. The fungicide azoxystrobin was the only active substance found and was found only in one sample with a concentration of < 0.05 mg kg-1. The active substances sought were not detected in 96.7 % of the samples analysed. The risk assessment revealed that the analysed pollen samples do not represent an unacceptable risk for consumers. The results were compared with those from the literature and the outcome was that bee pollen from Slovenia contained a lower number of active substances at mainly lower contents as compared pollen from some other European countries.

Highlights

  • IntroductionA diet supplemented with bee pollen strengthens muscles and improves the physical health of humans (Salles et al, 2014)

  • When hives are located near agricultural fields, plants treated with plant protection products (PPP) are a possible source of contamination for bee pollen (Tosi et al, 2018)

  • The purpose of this paper is to present the multire

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Summary

Introduction

A diet supplemented with bee pollen strengthens muscles and improves the physical health of humans (Salles et al, 2014). Bee pollen benefits those undertaking strenuous mental/physical work (Nakajima et al, 2009). When hives are located near agricultural fields, plants treated with plant protection products (PPP) are a possible source of contamination for bee pollen (Tosi et al, 2018). Honeybees may come into contact with PPP residues through the nectar, pollen or plant leaves of treated plants, or through air, soil and water where PPPs have drifted (Crenna et al, 2020)

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