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Aerosol Emissions from Great Lakes Harmful Algal Blooms

In freshwater lakes, harmful algal blooms (HABs) of Cyanobacteria (blue-green algae) produce toxins that impact human health. However, little is known about the lake spray aerosol (LSA) produced from wave-breaking in freshwater HABs. In this study, LSA were produced in the laboratory from freshwater samples collected from Lake Michigan and Lake Erie during HAB and nonbloom conditions. The incorporation of biological material within the individual HAB-influenced LSA particles was examined by single-particle mass spectrometry, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and fluorescence microscopy. Freshwater with higher blue-green algae content produced higher number fractions of individual LSA particles that contained biological material, showing that organic molecules of biological origin are incorporated in LSA from HABs. The number fraction of individual LSA particles containing biological material also increased with particle diameter (greater than 0.5 μm), a size dependenc...

Authors:   Nathaniel W. May; Nicole E. Olson; Mark Panas; Jessica L. Axson; Peter S. Tirella; Rachel M. Kirpes; Rebecca L. Craig; Matthew J. Gunsch; Swarup China; Alexander Laskin; Andrew P. Ault; Kerri A. Pratt
Journal:   Environmental Science & Technology
Year:   2017
DOI:   10.1021/acs.est.7b03609
Publication date:   20-Dec-2017
Facts, background information, dossiers
  • freshwater
  • particles
  • algae
  • toxins
  • scanning electron m…
  • molecules
More about American Chemical Society Publications
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