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Contaminated African Dust Blowing Across the Ocean
African dust is making it across the ocean.
Increasing quantities of African dust have blown across the Atlantic Ocean to the Caribbean and Americas over the past few decades. During that time, the dust's composition has changed.
In this study, African dust air masses in Africa and the Caribbean were analyzed for persistent organic contaminants and metals. These potentially toxic contaminants can originate from the burning of plastics, biomass and waste; widespread use of pesticides, plastics, and pharmaceuticals; and increased industrialization.
Multiple pesticides and other contaminants, including carcinogens, suppressors of immune systems, disruptors of endocrine systems, and nervous system or liver toxins were identified from all sample sites. All are known to persist in the environment, accumulate in organisms, and are toxic at very low concentrations.
This study, "Chasing clouds of dust: transoceanic transport of synthetic organic pollutants and trace metals with African dust," is from USGS at the Society of Environmental Toxicology and Chemistry.
Edited by Carolyn Allen, Managing Editor of Solutions For Green
Publication Date:
11/24/2009
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