Researchers at La Trobe University in Australia have developed a portable biosensor designed for the rapid, on-site detection of per- and polyfluoroalkyl substances (PFAS) in water. This device is intended to streamline environmental monitoring practices for these persistent chemicals.
Overview of the Development
The portable biosensor was developed by the Biomedical and Environmental Sensor Technology (BEST) Research Center at La Trobe University. The research, which was led by PhD student Henry Bellette and Dr. Saimon Moraes Silva, the head of the BEST research center, has been published in the journal ACS Sensors.
Understanding PFAS
PFAS are a group comprising over 15,000 synthetic chemicals, often referred to as "forever chemicals" due to their high persistence in the environment. These substances are utilized in various products, including firefighting foams, food packaging, and stain-resistant materials. PFAS have been associated with health risks, including cancer. The newly developed biosensor specifically targets perfluorooctanoic acid (PFOA), a PFAS compound that is subject to significant global regulation.
Biosensor Functionality and Impact
The device is designed to identify PFAS contamination directly on-site, providing a direct "yes or no" result at the point of testing. This capability could potentially reduce the necessity for water samples to be sent to specialized laboratories for analysis.
Context of PFAS Monitoring
Current methods for PFAS testing often involve expensive laboratory equipment and specialized analysis, which can limit the frequency and scope of contamination monitoring. This process typically requires samples to be transported to laboratories, potentially causing delays and increasing costs. PFAS contamination has been identified at various locations in Australia, particularly in areas where firefighting foams were historically used, such as airports, military bases, and fire stations.
Implications for Environmental Monitoring
Henry Bellette noted that the conventional testing methods complicate regular monitoring efforts. Dr. Saimon Moraes Silva suggested that portable detection tools could facilitate more frequent testing, particularly in remote regions, and help guide where more detailed laboratory analysis is most necessary. The aim is to support faster decision-making for regulators, utilities, and site managers.
Future Plans
The research team plans to integrate this technology into a handheld device for broader environmental monitoring and routine water screening applications.