Researchers say that older yet widespread technology under-measures mercury concentrations by as much as 80%.
, coal-burning power plants, cement manufacturers and other industrial operations. It is carried worldwide.
Despite well-documented knowledge of the environmental risks, the lack of accurate technology to measure airborne mercury pollution has hampered efforts to set global standards to reduce the threat. In their recent paper, they report that the newer systems, which rely on nylon or polyethersulfone membranes to capture airborne mercury, are much more accurate than older systems. One version of the technology used in two of the new systems that were tested was developed by the team led by Gustin at the University of Nevada, Reno; the technology used in the two other new systems was developed at Utah State University.
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