Brent Pautler, Ph.D. (ON) & Michael Healey will present “Advantages of Passive Sampling as a Decision-Making Tool” during Eurofins Environment Testing America Webinar Series at 1:30pm EDT on June 22, 2021.

Brent and Michael’s co-presenter is David Wiles (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 Photonics business development.

Michael is the Treatability and SP3™ Services Supervisor at SiREM with eight years of experience. Michael has managed numerous bench-scale studies evaluating remediation technologies for contaminants including chlorinated solvents, petroleum hydrocarbons, emerging contaminants and other recalcitrant compounds in soil, sediment, and groundwater. Michael has several years of passive sampling experience and was a lead member in the development and commercialization of the SP3™ sampler.

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.


Passive sampling devices (PSDs) present many advantages over conventional sampling methods for quantifying the availability of hydrophobic organic compounds (HOC) and inorganic compounds in sediment, soil, surface water and storm water in terms of cost and data quality. PSDs provide data to estimate contaminant bioavailability and toxicity to environmental receptors that are more accurate than conventional grab or mechanically extracted samples, as PSDs quantify freely dissolved contaminant concentrations (Cfree) as opposed to total mass including sorbed fractions. Measuring only bioavailable contaminants with PSDs provides a better measure of actual toxicity and mobility for environmental receptors and decreases toxicity overestimation compared to  conventional sampling methods (e.g., core collection, porewater extraction).

PSDs have been used in the laboratory and the field for decision making in site investigation and remediation, including techniques and advancements that simplify and improve ease of sampling, increase data quality and lower costs. PSDs can be deployed directly in-situ to capture the influence of groundwater flux, changes in field conditions and the heterogeneity of a site on the freely dissolved concentrations of the compounds of interest or ex situ where sample is exposed to a PSD in the laboratory to test remedies and/or speed up sampling kinetics.

Recent case studies where passive samplers have been used to determine the extent of contamination and/or effectiveness of the remedy, ultimately leading to a “no further action” decision. Finally, recent developments on the “bleeding edge” of passive sampling will be discussed.

More Information

Register for the Webinar: here
About Eurofins Environment Testing America:
For consultation regarding SiREM’s passives sampling services contact Brent at
Learn more about Brent:
Learn more about Michael: