PFOS Perfluorooctane sulphonate was added to the list of Persistent Organic Pollutants in May 2009. It is a fluorinated surfactant used in a variety of industries including the clothing, furniture and carpet manufacturing industries where it is used for waterproofing and as a stain repellent. PFOS also has uses in paper, paints, photography, metal plating and photolithography but the main source of input into the environment is from fire-fighting foams.
The SGS M-Scan laboratory first analysed PFOS in environmental samples in the mid 1990s and has analysed thousands of samples over the intervening period. Detection limits have been improved as new in house methods have been developed to meet the increasing demand from environmental authorities, airports, refineries and industrial sites. SGS M-Scan has methods in place for the analysis of PFOS and associated compounds in water, soil, fabric and marine fauna samples.