contaminants Potentially harmful substances found in wine, either as a result of air or water pollution, vineyard treatment residues , poor winery hygiene , ignorance, or adulteration and fraud . Of these, ignorance is possibly the most forgivable reason for contamination since the scope of what is regarded as, and can be measured as, a contaminant grows wider with the rapid progress of science and measuring techniques. Lead , for example, which was deliberately added to wines by the Romans, is now known to be a serious neural...
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