Contaminants of Emerging Concern in Anishnaabeg Aquatic Ecosystems

Information on the occurrence of contaminants of emerging concern (CEC) in the aquatic ecosystems that North American indigenous communities depend on is scarce. Given the particular importance of these ecosystems for food and economic security of indigenous communities, assessing the presence of contaminants becomes very important. Therefore, we wanted to highlight an excellent study [1] […]

Extracting Cationic and Zwitterionic PFAS from AFFF-Contaminated Soils

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The PFAS on the regulatory radar, such as PFOS, PFOA, and other related targets on typical laboratory lists, are anionic, or neutral. Therefore, the methods are optimized for anionic PFAS and feature standardized solid extraction using methanol containing ammonia, and weak anion exchange cleanup. However, many aqueous film forming foam (AFFF) active ingredients can be […]

COVID-19 Update: SGS AXYS Operations and Receiving are Open

To our valued clients. SGS AXYS continues to monitor the COVID-19 situation and restrictions closely. The laboratory is open and all laboratory operations including sample receiving are fully functional. The Canadian Federal Government and BC Provincial Government recognize the importance of US-Canadian essential services and commercial activity and have prioritized the continued movement of commercial […]

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Replacing Aroclor Methods with Congener-Based Approaches for PCBs

Summary SGS has developed and validated accurate, sensitive and accessible polychlorinated biphenyls (PCBs) analysis by GC-MS in support of the US EPA’s initiative to update the PCB measurement strategy for the National Pollutant Discharge Elimination System (NPDES) permit program. Background Polychlorinated Biphenyls (PCBs) are ubiquitous contaminants regulated under the US Clean Water Act. Currently, the […]

The Effects of Diluted Bitumen (dilbit) on Juvenile Salmon

We in British Columbia love our Pacific wild salmon and view them as keystone species and indicators of ecosystem wellbeing. Numbers have dropped significantly recently from multiple stressors including climate change, habitat loss, pollution and more.  With  current and proposed pipelines that will carry diluted bitumen (dilbit) from the oil sands through spawning habitat and […]

How does PFAS contamination affect microbial communities?

The widespread use of aqueous film forming foams (AFFF) containing PFAS at airports all over the world has resulted in contamination of ground and surface water, and soil. In addition to the many ecosystem effects that are still being studied, how are microbial communities affected? Which PFAS are microbes able to degrade and how does […]

Comprehensive CEC Analysis in Puget Sound Mussels

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How many contaminants of emerging concern (CEC) can you assess from one set of mussels? Turns out if SGS AXYS is doing the measurement, it’s at least 330! Scientists Andrew James, Jennifer Lanksbury, Tarang Khangaonkar and James West from the University of Washington Tacoma, Washington Department of Fish and Wildlife, and Pacific Northwest National Laboratories […]

Updates and Improvements to PPCP Method MLA-075

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SGS AXYS is a leader in the measurement of pharmaceuticals and personal care products (PPCPs) in the environment. Our methods were used as the basis for EPA Method 1694 in 2007 and these isotope-dilution LC-MS/MS PPCPs methods has since expanded to include close to 200 drugs, metabolites, hormones and personal care products. From natural and […]

Bile Acids Interferences in PFAS Analysis

Bile acids structure and name

Can bile acids found in plasma, eggs, liver and other biological samples interfere with PFAS analysis? Yes! But there are ways to avoid these interferences and produce reliable data. Bile acids and their salts are either synthesized in the liver or formed from bacterial activity. They are the major constituents of bile and help digest […]