Lead isotopes reveal different sources of lead in balsamic and other vinegars

摘要: Fifty-eight brands of balsamic vinegars were analyzed for lead concentrations and isotopic compositions ((204)Pb, (206)Pb, (207)Pb, (208)Pb) to test the findings a previous study indicating relatively high levels contamination in some those vinegars--more than two thirds (70%) them exceeded California's State Maximum Level (34 μg/L) based on consumption rates ≥0.5 μg Pb per day. The fingerprints all with then found be primarily anthropogenic. This analysis unquestionably reveals multiple sources including atmospheric pollutant an unidentified source, likely occurring after grape harvest. Organically grown display same content signatures as other vinegars. implies that pesticides might not significant source A post-harvest would inherited from chemicals added during production and/or material used transport, processing or storage these is consistent highest being aged (112±112 contrast (41.6±28.9 suggesting storage. It is, therefore, projected most vinegars, especially wine will decrease improvements their manufacture processes consequential recent concerns elevated