Identifying Unknown Chemicals and Disinfection Byproducts in Swimming Pools and Hot Tubs
Poster Jul 28, 2014
Jonathan D. Byer, Susan D. Richardson, Eric J. Daiber, Sridevi Anduri Chowdary, Joe Binkley, Jeff Patrick
Swimming pools are treated with disinfectants to protect swimmers from pathogens and prevent illness. Disinfectants will react with naturally occurring organic matter in water and, in the case of swimming pools, they can also react with chemicals introduced to the water by the swimmers themselves to produce byproducts that can be potentially harmful. It is important to treat water while minimizing the risk of disinfection byproducts (DBPs). One of the first steps is to chemically characterize the DBPs in swimming pools and hot tubs (very complex matrices), using non-targeted analysis since many of the contaminants are unknowns. Gas chromatography with high resolution time-of-flight mass spectrometry (GC-HRT) was used for the identification of "known unknowns" and "unknown unknowns" in swimming pool and hot tub water.
Overcoming the Challenges of Analysing Ionic Polar Pesticides in FoodPoster
Here, the novel application of the Waters’ Torus DEA column is presented, showing the improved performance of a UPLC-MS/MS method for the underivatised
analysis of glyphosate and a selection of other anionic pesticides.
LC-SWATH/MS Metabolomics Platform with Hyphenation of Extraction for the Analysis of Polar and Non-polar Metabolites in Biological SamplesPoster
Automated robotic sample preparation with hyphenated dual LC-SWATH/MS analysis for lipids and polar metabolites.
The Use of Pyrolysis/GCMS and Newly Developed Libraries to assist in Characterizing Complex Polymeric SamplesPoster
Pyrolysis-GC/MS is an effective tool in introducing and analyzing polymers. But since the polymer must be broken down to volatile segments in order to be sent to the GC, identification by the Mass Spec does not look at the original polymer, but only the fragments. This poster will look at a unique library designed to work with the existing NIST library, however contains averaged spectra of pyrolyzed polymers so it can be used to directly identify the original polymer sample.READ MORE