Diverse arsenic-containing lipids in the surface ocean

Katherine Heal, Ashley Maloney, Anitra Ingalls & Randelle Bundy
Arsenic is present at nanomolar levels throughout the ocean, and microbes assimilate this potentially toxic element due to its similarity to inorganic phosphorus. Although dissolved arsenic has been a focus of several oceanographic studies, the size and chemical character of the particulate arsenic pool is poorly understood. We measured particulate arsenic in five samples from the open ocean and determined the contribution of arsenic-containing lipids to this pool. Here we show that the accumulation of...
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