Welcome to the Biotage Expand Your Horizon Blog

      Tips to Pinpoint Contamination in Your Extraction Workflow for GC-MS Analysis

      November 3, 2022 at 2:00 PM / by Deanna Bissonnette posted in contamination, Drinking water, biotage horizon 5000, wastewater, Biotage Horizon 3100, extraction, EPA

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      In the world of environmental testing, we all know that contamination happens. It can be frustrating trying to locate where it is coming from when you are also trying to keep up with the samples that continue to come through the door.

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      Toxic Pollutants Found in Wastewater & Drinking Water

      October 13, 2022 at 3:00 PM / by Evan Walters posted in Drinking water, wastewater, organic chemicals, pollutants

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      Every day, you are exposed to toxic pollutants at various levels and frequencies. There are thousands of different toxins that exist in the world, most of them being directly related to the activities of humans.

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      How will the UCMR 5 Program Help Determine if Drinking Water is Safe?

      March 3, 2022 at 2:45 PM / by Evan Walters posted in contamination, Drinking water, UCMR, USEPA, assessment monitoring

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      If you live in an urban area or city, then you may be familiar with paying a water bill for the water you utilize in your home. For the most part, this water bill covers the cost of water testing, treatment, and transportation from your regional water facility to your home. When you look at the life cycle of your tap water, the journey it takes to make it to your home is quite amazing.

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      Why is EPA Method 549.2 a Challenging Method?

      November 11, 2021 at 8:00 AM / by Deanna Bissonnette posted in Drinking water, diquat, paraquat, epa 549.2

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      When I first saw EPA Method 549.2 only had two compounds, I said to myself: “WOW! That’s a breeze! Only two compounds to worry about, so it can’t be that difficult to extract!” Seeing as I was used to the methods with 100+ compounds to worry about, naturally, I would believe this at first glance. However, I was severely mistaken…these two compounds are far from easy to recover from a water sample. To be successful with EPA Method 549.2, you need to make sure you have the right chemistries taking place in order to recover these compounds well or even at all.

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      The Problem of PFAS: Part 2 - Top Regulations

      June 3, 2021 at 3:00 AM / by David Gallagher posted in SPE solid phase extraction, Sample preparation, EPA Method 537.1, per- and polyfluoroalkyl substances, PFAS, Drinking water, EPA Method, water extractions, SPE, perfluorinated compounds, PFOS, extraction, ISOLUTE 101

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      Welcome back! As the title indicates, this is Part 2 of an ongoing series where we discuss what’s going on with PFAS. For those of you who may not have read Part 1, you missed out on a summary of the controversy surrounding this group of compounds and I would recommend going back and taking a quick read through it to make sure that you’re caught up. 

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      What to know when transitioning from EPA method 525.2 to 525.3

      May 20, 2021 at 9:00 AM / by Michael Ebitson posted in SPE solid phase extraction, Drinking water, epa method 525.2, epa method 525.3

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      When learning that you may be transitioning to a newer revision of an EPA method some thoughts may come to mind such as: it took so long to perfect this sample preparation method, or I hope they have some improvements and or greater flexibility allowances in this revision. Well, that is exactly what we will touch upon in this blog post - sample preparation improvements.

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      Does it matter whether your dilution solvent is water-miscible?

      December 14, 2020 at 3:04 PM / by Deanna Bissonnette posted in SPE solid phase extraction, Drinking water, LLE liquid-liquid extraction, water miscible solvents, CLLE continuous liquid liquid extraction, EPA Method 8270, EPA Method 3500

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      For anyone who processes samples in an EPA-regulated laboratory, you know that these methods can be very specific in some spots, and incredibly vague in others. 

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      Improvements in Processing Drinking Water Samples Part 2

      December 10, 2020 at 2:39 PM / by Andrew Taylor posted in SPE solid phase extraction, Drinking water, application, epa method 525.2, epa method 525.3

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      In the first part of this 2-part blog series, I highlighted the improvements made by the EPA regarding the preparation and preservation of samples. In this post, I will focus more on the changes the EPA has made to Method 525 which affect the analysis of the prepared samples.

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      Improvements in Processing Drinking Water Samples by Method 525

      December 10, 2020 at 2:38 PM / by Andrew Taylor posted in SPE solid phase extraction, Drinking water, epa method 525.2, epa method 525.3

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      Since its release in 1995, EPA method 525.2 has been one of the most widely used methods for quantifying semi-volatile compounds in drinking water. Chances are, if you work for or own a drinking water lab, you probably analyze for compounds in this method – at the very least, you’re probably at least familiar with the method.

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      What is the best way to dry extracts for drinking water samples?

      December 7, 2020 at 2:23 PM / by Maura Rury posted in SPE solid phase extraction, Drinking water, epa method 525.2, sodium sulfate, drying extracts

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      If you’re a laboratory that’s processing drinking water samples using solid phase extraction, you’ve inevitably gotten to the step in your procedure where you’ve eluted your analytes from your SPE media and you find yourself saying “How do I dry my extracts?”

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