Environmental / Industrial

Total quality assurance is critical for environmental scientists who seek to identify, monitor, and detect trace chemical compounds and pollutants to meet government, regulatory, and industry standards. Stay ahead on all things PFAS from the latest compounds, analytical challenges, and even regulations. Learn about the workflows and interact with the top researchers in this rapidly evolving field.

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What is variable window SWATH acquisition and why does it improve results quality?

What is variable window SWATH acquisition and why does it improve results quality?

To continue to improve the quality of the SWATH acquisition data that one can achieve in complex matrices, we are working on ways that we can decrease the size of the Q1 window, while still maintaining full mass range coverage and optimal cycle times.  One great way...

Identifying the unknown PFAS profile in firefighting foams/AFFF

Identifying the unknown PFAS profile in firefighting foams/AFFF

According to a recent study from Harvard University, the US EPA, and NIEHS, traditional targeted analysis techniques poorly characterize the PFAS composition of contemporary PFAS-based firefighting foams, know as aqueous film-forming foams (AFFF).  Using the EPA 533 PFAS drinking water method for the analyte list, the researchers found that targeted mass spectrometry methods accounted for <1% of organic fluorine content.  This is important because it demonstrates that targeted analysis methods miss nearly all the PFAS compounds in modern AFFF mixtures, thus underestimating the risk to human health and the environment.

Is it raining PFAS?

Is it raining PFAS?

It certainly is in the Great Lakes. According to raw data from the US EPA-Canada Great Lakes monitoring program, there has been a growing prevalence of  per- and polyfluoroalkyl substances (PFAS) in rainwater in the Great Lakes basin.

High level method optimization considerations for Echo MS system

High level method optimization considerations for Echo MS system

While an in-depth discussion of method development and optimization for the Echo® MS system is beyond the scope of a community post, here are some points to consider as part of the process: The maximum recommended ion spray voltage for prolonged electrode life is 5000...

High level method optimization considerations for Echo MS system

What to do if you see peak shape deterioration or jagged peaks in your Echo MS system data?

Once a method has been developed, and good, consistent peak shapes have been obtained for an assay, the Echo® MS system is generally quite consistent. If peak quality deteriorates, consider the following points: The viscosity of the sample can affect the peak shape...

High level method optimization considerations for Echo MS system

Tips to maximize electrode lifetime for Echo MS system

While it’s easy to think of the Echo® MS system as an ultrafast LC system in front of the SCIEX Triple Quad 6500+ mass spectrometer, the system operates on fundamentally different principles. For this reason, it requires different routine maintenance to keep it...

The ugly truth about beauty products: PFAS in cosmetics

The ugly truth about beauty products: PFAS in cosmetics

Scientists find signs of potentially dangerous “forever chemicals” in more than 100 popular makeup products
If you have ever wondered what gives long-lasting cosmetics their staying power, you may now have your answer. Scientists have found highly persistent, potentially harmful “forever chemicals”—known as per- and polyfluoroalkyl substances (PFAS)—in half of the cosmetic samples they tested in a new study published in June 2021.1

Should you bring your PFAS testing in-house?

Should you bring your PFAS testing in-house?

As the per- and polyfluoroalkyl substances (PFAS) regulatory landscape evolves in the US and across the globe, the interest in PFAS continues to grow. Drinking water and food packaging are under particular scrutiny, and monitoring programs and requirements will continue to expand to include an increasing variety of sample types and PFAS compounds.

Using mass spectrometry to identify and quantify contaminants in water samples

Using mass spectrometry to identify and quantify contaminants in water samples

Access to clean wholesome water is a basic human right. Humans have engineered incredible methods to collect, filter, purify, store and distribute water to billions of people worldwide, but does this mean that our water is completely safe to drink? Also, how do concentrations of water contaminants differ from source to source?

Environmental scientists: Why the SCIEX X500R QTOF system is perfect for PFAS research