It is shown in this article that, when bees used plant flowers from a site that was moderately polluted by heavy metals (HMs), the smallest quantity of these metals was accumulated in honey, while the largest quantity was in propolis. The coefficient of biological accumulation of lead and cadmium in honey was at the level of 0.43 and 0.12, respectively. The largest quantity of HMs in the bee body is accumulated in the abdominal regions, while the smallest quantity is accumulated in the head region.
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Eskov et al. (2015) studied this question.