Decrease in anthropogenic lead, cadmium and zinc in Greenland snows since the late 1960s

@article{Boutron1991DecreaseIA,
  title={Decrease in anthropogenic lead, cadmium and zinc in Greenland snows since the late 1960s},
  author={Claude F. Boutron and Ursula G{\"o}rlach and J. P. Candelone and Michael A. Bolshov and Robert J. Delmas},
  journal={Nature},
  year={1991},
  volume={353},
  pages={153-156}
}
MORE than twenty years ago, Patterson and co-workers1 showed that evidence of lead concentrations in Greenland ice and snow had increased about 200-fold since ancient times. From their results, they concluded that more than 99% of this highly toxic metal in the global troposphere of the Northern Hemisphere originated from human activities in the mid 1960s—mainly from the use of alkyl-leaded petrol. At least in part because of this evidence, the United States and other countries limited the use… CONTINUE READING

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