Abstract
THE heavy metal content of various plants has been related to sources of air pollution1. Trees growing near London, England, were found to contain more lead than those growing in the country2. Grass near a highway was found to contain more lead than grass further away3. These studies involved root type plants that obtain their nourishment from the soil.
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MARTINEZ, J., NATHANY, M. & DHARMARAJAN, V. Spanish Moss, a Sensor for Lead. Nature 233, 564–565 (1971). https://doi.org/10.1038/233564b0
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DOI: https://doi.org/10.1038/233564b0
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