*2.2. Determination of Pesticide Residues*

Pesticide residues in the honey were determined by the QuEChERS (quick, easy, cheap, effective, rugged, and safe) method using chromatographs coupled with tandem mass spectrometers (LC-MS/MS and GC-MS/MS) [20]. The honey was tested for the presence of 223 substances: 93 insecticides, 57 herbicides, 57 fungicides, 9 acaricides, 4 veterinary drugs, and 3 plant growth regulators (a detailed list of the compounds analysed is presented in Table 1).

**Table 1.** List of analysed compounds.


#### **Table 1.** *Cont.*


\* The limits of quantification (LOQ) of the substances are given in Supplementary Table S1.
