Brent Pautler, Ph.D. (ON) will present “PFASsive™: A Diffusion-Based Passive Sampler ) ” during Eurofins Environment Testing America Webinar Series at 1:30pm EDT on June 21, 2022.

Brent’s co-presenters are Dr. Anh Pham (University of Waterloo) and  Andrew Patterson (Eurofins Environment Testing America).


Brent received his Ph.D. environmental analytical chemistry in 2013 where he gained advanced technical experience in spectroscopy, chromatography, mass spectrometry, passive sampling, and chemistry informatics. Throughout his career, he has worked with scientists, engineers, and consultants, applying his chemistry and information technology expertise to help them solve unique problems in the laboratory and the field. His role includes managing and advancing SiREM’s passive sampling portfolio, analytical testing services while supporting Compounds Specific Isotope Analysis business development.

Eurofins Scientific, through its subsidiaries, is the world leader in food, environmental, pharmaceutical and product testing and AgroSciences services. They are a global independent market leader in testing and laboratory services for genomics, discovery pharmacology, forensics, advanced material sciences and for supporting clinical studies. Additionally, Eurofins is emerging as a key player in specialty esoteric and molecular clinical diagnostic testing in Europe and USA.

Eurofins has more than 50,000 staff across independent companies, operating more that 800 laboratories in 50 countries and counting. Their facilities offer a portfolio of over 200,000 analytical methods to assess the safety, identity, composition, authenticity, origin and purity of biological substance and products, including innovative clinical diagnostic services.


Per-and Polyfluoroalkyl Substances (PFAS) have emerged as a concern at many sites as they are persistent, bioaccumulative, and have demonstrated toxicity in laboratory animals, therefore it is a critical need to understand their migration pathways and bioavailability for proper delineation and risk characterization. Although there are established grab sampling techniques available for PFAS, these capture the total concentration which may result in an overestimation of risk to human and ecological receptors. Passive sampling in sediment porewater and surface water is an accepted approach to assess bioavailability and risk through the dissolved phase of many known contaminants (i.e., PCBs, PAHs, pesticides, metals etc.). Given their partially water-soluble nature, a diffusion-based passive sampler is a good candidate for quantification of dissolved PFAS. This presentation will highlight both targeted and non-targeted results from in situ field testing of a novel passive sampler, PFASsive, and compare these results with those obtained from traditional grab sampling.

More Information

Register for the Webinar: here
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For consultation regarding SiREM’s passives sampling services and PFASsive™ contact Brent at
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