Showing posts tagged with "water-and-environmental-testing"
On the surface, EPA Method 1664B seems pretty straightforward – use n-hexane to extract compounds (commonly referred to as “oil and grease”) from an acidified water sample. Evaporate the hexane from t...
If you’re familiar with methylene chloride (which I’m sure you are since it’s one of the most widely used laboratory solvents), you know that it’s developed a reputation for being one of the “bad boys...
1,4-dioxane – sometimes referred to as just dioxane – has gotten a lot of press since the U.S. EPA added it to the third Unregulated Contaminant Monitoring Rule (UCMR 3). It is a relatively common sol...
Have you ever spent the day walking through the woods, paused to take in the natural sights, smells and sounds of a babbling brook or flowing waterfall and thought….“I wonder how many pesticides are i...
Happy World Water Day!! I know I love water, so as some take the time to cherish their loved ones on Valentine’s Day, why not take World Water Day to cherish and appreciate our freshwater?! I challeng...
Have you ever worked with new methods and said to yourself “yes I know what these internal standards and surrogates are measuring and when to add them to the samples”? Sounds familiar right? Well, I r...
Ever wonder if you need to perform quality control (QC) on solvents and solid phase extraction (SPE) consumables? Well, the answer is yes! You want to make sure that your disks and solvents are good t...
When working with regulated environmental methods have you ever asked yourself why are all these extracts concentrated down to one millilitre (mL) final volume? This is true for most soil and aqueous ...
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 ...
If you’ve been in the environmental arena as long as I have, seeing a “chemistry” term on the nightly news in conjunction with pollution is usually nothing to worry too much about. Sure, it’s an indic...