alertness about dangerous pfass per- and polyfluoroalkyl substances used in products and materials

pfas pfass concept concepts magnifying glass attention alertness learning surveillance environmental damage issues pollution illness carcinogen water repellent chemical danger warning chemicals pfos cancer pfoa toxic waterproof impermeable waterresistant rainproof contamination synthetic compounds fluorinated substances fluorine pollutants organic environment health exposure risk dangerous products fluorochemicals carcinogenic disease biochemistry pollutant microbiology chemistry polyfluoroalkyl hazard about per- used materials their enhanced water- water-resistant properties seen through