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Duke University Scientists Design New Tests To Detect Coal Ash Contamination

In this Jan. 14, 2016 file photo, a drainage pipe that was the original culprit of a coal ash spill is seen at the Dan River Steam Station in Eden, N.C. (AP Photo/Gerry Broome, File)

Scientists at Duke University have developed new tests that can detect coal ash soil contamination with a new level of sensitivity. 

The four new tests are designed to recognize the presence of tiny fly ash particles which current tests might miss.

Fly ash is generated when a power plant burns pulverized coal, and its toxic particles are often microscopic in size.

While most of the ash can be captured and disposed of, some is emitted into the environment and can accumulate in soil downwind from the plant.

According to a news release, the new tests can detect and measure how much fly ash has accumulated with an unprecedented level of certainty.

Zhen Wang, a doctoral student who led the research, says that being able to trace the contamination to its source “is essential for protecting public health and identifying where remediation efforts should be focused.”

Coal ash contamination has been a controversial issue in North Carolina, particularly following a 2014 Dan River spill which prompted cleanup efforts at a number of Duke Energy power plants.

Neal Charnoff joined 88.5 WFDD as Morning Edition host in 2014. Raised in the Catskill region of upstate New York, he graduated from Sarah Lawrence College in 1983. Armed with a liberal arts degree, Neal was fully equipped to be a waiter. So he prolonged his arrested development bouncing around New York and L.A. until discovering that people enjoyed listening to his voice on the radio. After a few years doing overnight shifts at a local rock station, Neal spent most of his career at Vermont Public Radio. He began as host of a nightly jazz program, where he was proud to interview many of his idols, including Dave Brubeck and Sonny Rollins. Neal graduated to the news department, where he was the local host for NPR's All Things Considered for 14 years. In addition to news interviews and features, he originated and produced the Weekly Conversation On The Arts, as well as VPR Backstage, which profiled theater productions around the state. He contributed several stories to NPR, including coverage of a devastating ice storm. Neal now sees the value of that liberal arts degree, and approaches life with the knowledge that all subjects and all art forms are connected to each other. Neal and his wife Judy are enjoying exploring North Carolina and points south. They would both be happy to never experience a Vermont winter again.

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