Health

New device quickly measures trace amounts of toxic lead in sediments

Rutgers researchers have created a small device that measures trace amounts of toxic lead in sediments at the bottom of harbors, rivers, and other waterways within minutes.

With affordable lab-on-chip devices, municipalities, water companies, universities, kindergartens, kindergartens, and homeowners can easily and quickly test water. Research IEEE Sensor Journal..

In addition to detecting lead contamination of water in domestic and elementary environmental samples and plumbing, use tools like these one day to go to a sushi bar to see if the fish you ordered contained lead or mercury. You can check it. “

Mehdi Javanmard, Senior Researcher and Associate Professor, Department of Electrical and Electronic Engineering, Rutgers University-New Brunswick

“To detect toxic metals such as lead, mercury, and copper, we usually have to collect a sample and send it to the lab for costly analysis, and the results are returned in a few days,” Javanmard said. Told. “Our goal is to bypass this process and build a sensitive and inexpensive device that can easily be carried on site in minutes and analyze samples on site to quickly identify hot spots of contamination. That was it.”

The study focused on analyzing lead in sediment samples. Many river deposits in New Jersey and throughout the country are contaminated with industrial and other waste dumped decades ago.

Proper management of contaminated dredged material from shipping routes is important to limit potential impacts on wildlife, agriculture, plants and food. The rapid identification of contaminated areas enables a timely and cost-effective program for managing dredged material.

The new device extracts and purifies lead from sediment samples and uses a thin film of graphene oxide as a lead detector. Graphene is a thick layer of atoms of graphite, a writing instrument for pencils.

Further research is needed to further validate the device’s performance and increase its durability. As such, it could probably become a viable product in the next two to four years.

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