Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Your Environment. Your Health.

University of Texas, Arlington

In situ sensing system for the selective and sensitive detection of biological toxins in HABs

Hyeok Choi, Ph.D.

NIEHS Grant: R01ES021951

Researchers at the University of Texas, Arlington are developing a real-time sensor to monitor microcystins, a powerful biological toxin produced from cyanobacterial harmful algal blooms (HABs). Exposure to microcystins can affect the number and diversity of wild animal populations, cause bioaccumulation of toxins in the tissues of fish and shellfish, and indirectly affect other organisms through the food chain and eventually humans. The investigators are pioneering an optical sensor to detect multiple microcystins at trace levels, exploring an integrated chip-scale sensing node to automatically execute the sensing protocol, and developing a wireless sensor network to communicate data. The research team will deploy the sensor in a potential HAB site in the Great Lakes. Their work will generate an in situ wireless sensing network that can monitor microcystins in water resources sustainably and responsively while also communicating critical information to remote environmental and health authorities in real time.

to Top