Researchers at La Trobe University have developed a portable biosensor designed to detect per- and polyfluoroalkyl substances (PFAS) on site, offering a potential alternative to laboratory-based testing methods.
The device targets a group of more than 15,000 synthetic chemicals widely used in products such as firefighting foams, food packaging and stain-resistant fabrics, the university said in a news release.
These substances are known for their persistence in the environment and have been linked to serious health risks, including cancer. The biosensor specifically detects perfluorooctanoic acid (PFOA), one of the most regulated PFAS compounds.
The research, led by PhD student Henry Bellette and Saimon Moraes Silva, Director of the Biomedical and Environmental Sensor Technology (BEST) Research Centre, has been published in ACS Sensors.
Bellette said existing PFAS testing methods can restrict how frequently and widely water monitoring is conducted.
“Most PFAS testing relies on expensive laboratory equipment and specialist analysis, which makes regular monitoring difficult,” he said.
“This biosensor could be used on site and provides a simple yes or no result, allowing water to be screened quickly and easily.”
PFAS contamination has been identified across Australia, particularly at locations where firefighting foams were historically used, including airports, military bases and fire stations.
Dr Moraes Silva said portable screening tools could support ongoing efforts to manage contamination.
“PFAS do not break down in the environment, so monitoring is an ongoing challenge,” he said.
“A portable screening tool could allow more frequent testing, particularly in regional and remote areas, and help identify where more detailed laboratory analysis is needed.”
According to the researchers, the technology may eventually be incorporated into a hand-held device for environmental monitoring and water screening, although further development would be required before broader deployment.
