Influence of atmospheric pollution on the lead content of wines
作者:
B. Medina,
S. Augagneur,
M. Barbaste,
F. E. Grousset,
P. Buat-Menard,
期刊:
Food Additives & Contaminants
(Taylor Available online 2000)
卷期:
Volume 17,
issue 6
页码: 435-445
ISSN:0265-203X
年代: 2000
DOI:10.1080/02652030050034019
出版商: Taylor & Francis Group
关键词: Lead Concentration Isotopic Composition Wine Temporal Evolution Authenticity
数据来源: Taylor
摘要:
Over the last century, the atmospheric fallout of anthropogenic lead has evolved with time, as a function of the chronological variability of transient lead inputs from both industrial and gasoline origins. This variability has been mostly documented over North America and northern Europe. In this study we used ICP-MS for the determination of lead isotope ratios and showed that a series of French wines followed the evolution of the environmental lead record over the last century. We observe the same three-step chronological evolution of the lead isotopic composition, which reflects a western European signal. In the post 1950 vintages, the lead isotope composition reflects a dominant atmospheric fallout. Since ˜1950, Pb concentrations have been much lower than before, decreasing consistently from ˜0.25mg l-1around the early 1950s, down to less than ˜0.1mg l-1nowadays. Reflecting the airborne pollution, the lead isotopic signature is also specific of the continental origin of the wines and lead isotope ratios determination in wines appears to be a promising tool for certifying wine authenticity.
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