engleski

Content of five trace elements in different honey types from Koprivnica-Križevci County

Multifloral and unifloral honeys [black locust (Robinia pseudoacacia L.), chestnut (Castanea sativa Mill.), lime (Tilia spp.), indigobush (Amorfa fruticoza L.) and rapeseed (Brassica napus)] were collected from Koprivnica-Križevci County in northwestern Croatia during 2010 and 2011. The concentrations of Cd, Pb, Hg, As and Cu were determined in each honey type. Mean levels of elements (g kg-1) in honey samples measured were: in multifloral 1.33 for Cd, 215 for Pb, 138 for As, 1.49 for Hg and 11.8 for Cu ; in black locust 1.80 for Cd, 533 for Pb, 109 for As, 0.54 for Hg and 15, 335 for Cu ; in lime 3.17 for Cd, 342 for Pb, 267 for As, 0.80 for Hg and 9, 733 for Cu. Significant differences in Hg and Cu levels were observed between honey types. Average Cu levels found in lime and black locust honey types were much higher than those reported in other European countries. The highest element contents measured in different honey types were: Cd 4.0 g kg-1 and As 502 g kg-1 in rapeseed, Hg 6.11 g kg-1 in chestnut, Pb 2, 159 g kg-1 in black locust and Cu 79, 167 g kg-1 in indigobush. Lead concentrations measured in all honey types were much higher than levels obtained in Italy, Slovenia, Poland, Romania and Turkey. These indicate that special attention should be paid to ensuring positions of hive in zones of bee forage that are more distant from highways and railways. The results presented indicate a differentiation of the trace element content of honeys of different botanical origin obtained from the same area.

As; Cd; Cu; different honey types; Hg; Pb

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