As chemistry professionals committed to providing high quality analytical testing services, we understand the important role laboratories play in protecting our water. After all, our children, families, friends, and neighbors may be using the same water source that we are testing. Which is one of the reasons ResinTech continuously invests in the latest instrumentation, method development procedures, and training to provide accurate data.
WHAT ARE PER- & POLYFLUOROALKYL SUBSTANCES (PFAS)?
Polyfluoroalkyl and perfluoroalkyl substances (PFAS) are fluorinated organic chemicals, which include perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). They are sometimes called “forever chemicals”. PFAS chemicals are persistent and bioaccumulate. Persistent means they do not break down in the environment and bioaccumulate refers to the process of building up over time in the blood and organs.
Of all the PFAS compounds, PFOA and PFOS have been the most studied. PFOA and PFOS have been used in the manufacturing of carpet, clothing, shoes, cookware, packaging, oil and water repellents, furniture, take-out food containers, and countless other application like the surfactants needed in chrome plating and the main compounds that researchers hope can be used in liquid breathing. PFAS compounds have also been used by the Department of Defense (DoD) for fire extinguishing foam at military base airfields at locations throughout the United States.
PFAS substances are long carbon chain acids or salts with fluorines attached to most or all the carbons. These are all man-made or breakdown products of man-made chemicals.
WHY TEST FOR PFAS?
Currently there are more than 500 PFCs being used in products and industries. At least two of these compounds seem to be scientifically-accepted as bad for humans and the environment: perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). A significant amount of research involving these compounds is currently being evaluated and published. It seems likely that the list and limits might change. A significant amount of research involving those two compounds as well as many other PFC's are currently being studied and published. The industry is in the early stages of dealing with these compounds and it seems likely that the list of compounds and limits might change as we learn more.
WHAT METHODS DO WE PERFORM?
ResinTech offers two analytical options for PFAS. Analytical methods performed by ResinTech include EPA 537.1 and ASTM D7968-17 for solids. Currently, there is not an EPA-approved method for non-drinking water samples. Once a method is approved, ResinTech will develop and run the additional method.
EPA 537.1: ResinTech performs EPA 537 in drinking water for the list of PFAS substances that are EPA-approved by the method. EPA 537.1 is a prescriptive Drinking Water Method for PFCs. It can only be used for the compounds in drinking water samples and is limited in the allowable modifications, according to the method.
ASTM D7968-17: To support our customers site investigation efforts, ResinTech performs the analysis of soil samples for PFAS using analytical method ASTM D7968-17. The method, developed by the U.S. EPA Region 5 Chicago Regional Laboratory, is an LC-MS-MS method specific for PFAS in soil. Soil samples are prepared for analysis with a solvent extraction prior to analysis.
HOW DO YOU SCHEDULE TESTING?
It's simple because we make things easy for our clients. To set-up a PFAS project, just contact:
We will guide you through the sample collection container needs, compound lists, holding times, and method selection.