Element Content of Propolis Collected from Different Areas of
South Spain
Environ Monit Assess, 2013 Jul;185(7):6035-47
The aim of this work is to determine the content of
essential and toxic elements in 25 raw propolis samples, when considering
pollution agents and geographical and botanical factors. The microwave-assisted
digestion was the most reliable and accurate method for determination of
inorganic elements in propolis samples.
The results were obtained using certified reference
materials in a good agreement with certified values. Inductively coupled plasma
atomic emission spectroscopy was used for the determination of 23 macro- and
microelements (Ag, Al, As, B, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb,
S, Sb, Se, Si, Sn, and Zn). A Mercury analyzer was also utilized for the
detection of the total Hg. Among the analyzed metals, Ca, K, Mg, Zn, Si, S, Fe,
Al, P, and Na were found to be the most predominant. Heavy metals (As, Cd, Hg,
and Pb) were determined in minimal concentration, and Pb was the highest mean
contained toxic ( < 3.80 mg/kg), without influence on provisional tolerable
weekly intake values. The method can be applied for routine analysis and
quality and environmental pollution controls of toxic elements in propolis
samples. The results obtained indicate no pollution of the collection areas and
naturally high concentration of Al (460 ± 62.2 mg/kg).
No comments:
Post a Comment