engleski

Heavy metals content of some Croatian wines

The heavy metals (Pb, Cd, Cu, Zn) content of different brands of Croatian red, white, rose and fruit wines was measured by the electrochemical flow-through stripping chronopotentiometry (FTSCP), flame atomic absorption spectrometry (FAAS) and Zeeman graphite furnace atomic absorption spectrometry (ZGFAAS) methods. FTSCP method has some advantages in comparison to FAAS and GFAAS methods, like e.g. possibilities of simultaneous determination of all above mentioned heavy metals, very low detection limit, very easy sample preparation, and low running costs of instrument and analysis. The results show that the heavy metals concentration varies significantly with the brand of wines, but all determined concentrations are significantly below the tolerable limits for above mentioned heavy metals concentration in wines established by Ministry of Health of Republic of Croatia, OIV and European Commission Regulations. The mean concentration of heavy metals in all wines samples investigated was: 9.50 micrograms Pb/l, 0.13 micrograms Cd/l, 156 micrograms Cu/l and 640 micrograms Zn/l. The evaluated daily intake of investigated heavy metals (1.9 micrograms Pb/d, 0.03 micrograms Cd/d, 31.2 micrograms Cu/d and 128 micrograms Zn/d) possible through the consumption of wines was practically negligible in relation to both the total dietary daily intake (TDDI) and calculated tolerable daily intake (TDI) of these heavy metals, calculated from FAO/WHO reports. Thus, it appears that the dietary Pb, Cd, Cu and Zn intake from investigated wines should not be a cause for concern with regard to possible toxicity of these heavy metals for the human body.

heavy metals; wines; Pb; Cd; Cu; Zn

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