The poster featured in this blog post has a somewhat funny title which caught my eye when I was reviewing the list of the latest and most popular gas chromatography applications from one of our marketing specialists. The other reason I am writing about this application is because it does seem concerning that a study from Spain (referenced in the poster) found that pesticides in fruit-based soft drinks are 300 times higher than those in tap water (link to study).
Poster Note, Pesticides in My Beverage—Screening (and Subsequent Quantiﬁcation) of Pesticides in Beverages Originating from Leaves, Grapes, Grasses, and the Hydrologic Cycle (Tea, Wine, Milk, and Water) Using Automated SPE (downloadable PDF) presents a fast and efficient sample preparation method using our automated solid-phase extraction (SPE) instrument (Thermo Scientific Dionex AutoTrace 280 SPE instrument) to concentrate pesticide residues in beverages and aqueous samples.
The advantage in using the Dionex AutoTrace 280 SPE instrument is that it extracts pesticide residues from large volume beverage samples for analysis with high speed, efficiency, reproducibility, and recovery rate. Other advantages include the automation of all four steps of SPE, running unattended, removal of sample interferences, isolation and concentration of analytes from the liquid matrix, reduction of solvent consumption, and reduction of exposure to harmful solvents.
The sample preparation was done as per U.S. EPA Method 508Organohalide Pesticides and Commercial Polychlorinated Biphenyl (PCB) Products in Water, (downloadable PDF); the poster lists the remainig EPA methods for pesticide testing. Sample preparation was followed by GC-ECD analysis to separate and identify chlorinated pesticides.
On page 6 of the poster, you will note the workflow solution for pesticide analysis includes our automated sample concentrator (Thermo Scientific Rocket Evaporator) which is used to dry samples completely or to concentrate them to a small volume.
Like what you are learning?
Here is a 7.10 min video on the Rocket Evaporator that you might be interested in viewing.
- More chromatography pesticide applications on this blog.
- Check out our community pages for chromatography food and beverage applications, breaking news, webinars, event information and links to many useful resources.
- You might also be interested in our recently released Chromatography Solution Online Center which features many useful and complimentary chromatography tools which can help speed up your analysis. The site is updated on a monthly basis; therefore, do check out the Archives section to see what was previously featured.
If you have questions on the method or instruments, do enter them in the Comments box below; our experts look forward to hearing from you.